02.2007
Battery Charger Solutions
High Performance Analog ICs
Linear Technology’s high performance battery charger ICs
Each battery chemistry has unique battery-charging require-
enable long battery life by providing precision charging
ments. Selecting the correct battery charger increases the
control, constant status monitoring and stringent battery
operational run time of the end-product by ensuring that
protection. Proprietary design techniques provide battery
the battery is always optimally charged. This guide contains
and circuit protection, small solution footprints, faster
the essential technical criteria to easily identify the optimum
charging, 100% standalone operation, improved thermal
battery charging IC for charging single-cell, multiple-cell
performance and high reliability operation.
and even battery packs, regardless of chemistry.
For information on our latest battery charging products,
visit our website at www.linear.com
How to Use this Guide
If your search is based on:
Start with:
Battery Chemistry and
Number of Cells in Series and
Charge Current
Selector Guides: Pages 18-19
Battery Chemistry
(a color coded guide)
Block Diagrams: Page 1
Charging Topology
Block Diagrams: Page 1
Design and Application Topics
(USB, Smart Battery, etc.)
Further Reading: Page 20
Block Diagrams
page
Linear
Charger
VIN
NiMH NiCd
Nickel
02, 10
Lithium
Li-Ion 4.2V/cell (1 and 2 cell)
Li-Ion 4.0 – 4.4V/cell (1 and 2 cell)
USB
PowerPath™ Control
Thermal Regulation/Thermistor
Coin/Low Current Cells
Charge Monitor/Gas Gauge
No Trickle Charge
Design and Application Notes
04-05
05
06
03
10
09
08
09
20
Lithium
On-chip Regulators/Comparators
Design and Application Notes
07
20
Lithium
Pulse
Design and Application Notes
13
20
Lithium
Switchmode Buck
Switchmode Buck-Boost
Switchmode Thermistor
Li-Ion Charge Termination IC
Design and Applications Notes
14-15
13
11
17
20
Switchmode Buck
Switchmode Buck-Boost
Switchmode Thermistor
Design and Applications Notes
14-15
13
11
20
Smart Battery Chargers – SBS
Design and Applications Notes
11-12
20
Other Battery Charger Related Devices
03, 16, 17
Linear
Charger
Batt
Linear Charger +
Regulators
USB
To
System
Loads
Linear
Charger
and
Regulator
AC/DC
VOUT2
VOUT3
Batt
Pulse
Charger
Pulse
Charger
VIN
Batt
Switchmode
Monolithic
Charger
Switching
Monolithic
Charger
VIN
NiMH NiCd
Lead-Acid
Batt
Switchmode
Controller
Charger
Lithium
VIN
NiMH NiCd
Switching
Controller
Charger
Lead-Acid
Batt
Switchmode
Smart Battery
Charger
Multi-Chemistry
Multi-Chemistry
Lithium
VIN
NiMH NiCd
Lead-Acid
Multi-Chemistry
Smart
Battery
Charger
SPI
SMBUS
• I/O
•
•
Batt
Other
02
NiMH & NiCd
NiMH and NiCd Fast Battery Chargers
LTC4060: Standalone 2A Linear NiMH/NiCd Fast Battery Charger
LTC4011: Actual Size,
Complete Solution
LTC4010: High Efficiency 4A Standalone Switchmode
Battery Charger
Linear Technology’s nickel battery chargers reduce component
count, speed design and allow fast, reliable charging of both NiMH
and NiCd chemistry cells.
5.5 < VIN < 34V
Load
4.5 < VIN < 10V
No Microcontroller
No Firmware
LTC4010
LTC4060
Load
Charge
Current
Program
No Microcontroller
No Firmware
NiMH
NiCd
Up to 4 Cells
NiMH
NiCd
Up to 16-Cell
Up to 4A
Battery Charger
Battery
Cells*
Part No.
Topology
(series)
Max
Charge
Current
Input
Voltage
Onboard
Charge
Termination
Integrated
Pass
Transistor
End-ofCharge
Signal
AC
Present
Signal
Thermistor
Interface
Package
NiMH / NiCd Battery Chargers – Standalone
LTC4060
Linear
1–4
2A
4.5 – 10V
-dV, t, V, T
–
I
I
I
DFN-16,
TSSOP-16
LTC4010
Synchronous
Step Down
1 – 16
4A
4.5 – 34V
-dV, dT/dt, T, t
–
I
I
I
TSSOP-16
LTC4011
Synchronous
Step Down
1 – 16
4A
4.5 – 34V
-dV, dT/dt, T, t
–
I
I
I
TSSOP-20
–
–
–
SO-8
–
–
–
SO-8, SSOP-16,
SO-16
NiMH / NiCd Battery Chargers – Non-Standalone
LT1512
SEPIC
1 – 18
0.8A
2.4 – 29V
External, µC
LT1510
Step Down
1 – 12
1A
7 – 29V
External, µC
I
I
LT1513
SEPIC
1 – 18
1.6A
2.4 – 29V
External, µC
I
–
–
–
DD Pak,
TO-220
LT1769
Step Down
1 – 12
2A
7 – 29V
External, µC
I
–
–
–
TSSOP-20,
SSOP-28
LT1511
Step Down
1 – 12
3A
7 – 29V
External, µC
I
–
–
–
SO-24
LTC4008
Synchronous
Step Down
4 – 18
4A
6 – 28V
External, µC
–
I
I
–
SSOP-28
LT1505
Synchronous
Step Down
1 – 13
8A
6.7 – 26V
External, µC
–
I
–
–
SSOP-28
NiMH / NiCd Battery Chargers – Smart Chargers
LTC4100
Step Down
1 – 13
4A
6 – 28V
External, µC,
SMBus
–
–
I
I
SSOP-24
LTC1759
Step Down
1 – 13
8A
11 – 24V
External, µC,
SMBus
–
–
I
I
SSOP-36
LTC1960
Step Down
4 – 16
8A
6 – 28V
External, µC,
SPI
–
–
–
–
SSOP-36
*Based on Maximum Cell Voltage of 1.8V
P O W E R PAT H C O N T R O L
IDEAL DIODES
Battery Chargers with PowerPath Control
LTC4055: USB Power Controller and
Li-Ion Battery Charger
Wall
Adapter
Linear Technology’s PowerPath products and
architectures allow the load to be powered
from both VIN and the battery, ensuring
shorter charging times and more flexibility
for the portable device designer. They
also enable “instant on” in systems with a
depleted battery.
Part No.
Max.
Charge
Current
Input
Voltage
OUT
IN1
VBUS
IN2
Load
Current Limit
Control
Input Charger
Control
Output Charger
Control
Ideal
BAT
RDS (ON)
of Ideal Diode
Standby
Current
WALL
+
1V
–
IBAT Drain
Current
Li-Ion
Battery
UVLO
Standalone
Onboard
Charge
Thermal
Termination Regulation
Integrated
Transistor
Package
USB Power Managers and Li-Ion Linear Battery Chargers with PowerPath Control
LTC4055
1.25A
4.3 – 5.5V
200mΩ
50µA
2.5µA
I
Timer +
C/10
I
I
QFN-16
LTC4066
1.5A
4.35 – 5.5V
50mΩ
50µA
2.5µA
Timer + C/x
1.5A
4.35 – 5.5V
200mΩ
(<50mΩ opt.)
50µA
15µA
I
I
I
I
QFN-24
LTC4085
I
I
LTC4089/-1
1.5A
4.35 – 5.5V
215mΩ
(<50mΩ opt.)
50µA
15µA
I
Timer +
C/10
I
I
DFN-22
Timer +
C/10
DFN-14
Ideal Diodes
LTC4413: Dual 2.6A, 2.5V to 5.5V Ideal Diodes in 3mm × 3mm DFN
Linear Technology’s Ideal Diode devices provide a low loss, near “ideal” diode function. They feature lower forward voltage drop and reverse
leakage current than conventional diodes. This reduces power losses and self-heating, thereby extending battery run time.
Part No.
Ideal
Diode
MOSFET
Integrated
MOSFET
Max
Current
Input
Voltage
Forward
Voltage
Forward ON
Resistance
Reverse
Leakage
Current
Supply
Current
Package
Low-Power PowerPath Controllers and Ideal Diode Devices
LTC4411
Single
P-channel
2.6 – 5.5V
28mV
140mΩ
1µA
35µA
ThinSOT™
Dual
P-channel
I
I
1A
LTC4413
1.5A
2.5 – 5.5V
28mV
100mΩ
1µA
20µA
DFN-10
LTC4412
Single
P-channel
–
5A*
2.5 – 28V
20mV
–
3µA
13µA
ThinSOT
LTC4412HV
Single
P-channel
–
5A*
2.5 – 36V
20mV
–
3µA
13µA
ThinSOT
Part No.
External
Ideal Diode MOSFET
Max
Current
LTC4413 vs 1N5817 Schottky
Benefit: Less Heat
Input Voltage
Package
2000
1500
High-Power PowerPath Controllers and Ideal Diode Devices
Dual
N-channel
5A
4.75 – 30V
SSOP-16
LTC1473L
Dual
N-channel
5A
2.8 – 9V
SSOP-16
LTC1479
Triple
N-channel
5A
6 – 28V
SSOP-36
LTC4350
Single
N-channel
15A
1.5 – 12V
SSOP-16
LT4351
Single
N-channel
15A
1.2 – 18V
MS-10
*Depends on MOSFET Selection
I O UT ( mA)
LTC4413
LTC1473
1000
1N5817
Schottky
500
0
0
100
200
V FW D (mV)
300
400
03
04
Li-ION 4.2V/CELL LINEAR
Li-Ion 4.2V/Cell Linear Battery Chargers
LTC4065/A: Standalone Linear Li-Ion Battery Chargers in
2 x 2 DFN
2mm
Linear Technology has a vast portfolio of linear Li-Ion 4.2V float
voltage battery chargers with a multitude of performance, feature
and package options.
VIN
3.75V to 5.5V
Part No.
Max
Charge
(series) Current
Input
Voltage
Onboard
Charge
Termination
Li-Ion
Batt.
Cells
2mm
LTC4065/A
DFN-6
Standalone operation eliminates the need for an external microcontroller and associated firmware support for charge termination,
thereby greatly simplifying design.
RPROG
0.75mm
Integr.
Pass ICHARGE
Trans. Monitor
End-ofCharge
Signal
AC
Present
Signal
–
Thermal
Reg.
Thermistor
Interface
–
DFN-6
–
DFN-6
I
I
I
I
I
–
ThinSOT
–
–
–
ThinSOT
I
I
I
I
I
I
I
I
I
I
–
DFN-8
–
DFN-8
–
–
–
DFN-10
DFN-10
DFN-10
I
I
I
I
I
I
I
I
I
I
I
I
DFN-10
–
DFN-10
–
DFN-10
I
I
QFN-16
I
I
I
I
–
I
I
I
I
I
MS-10
–
I
I
I
I
–
–
–
MS-8,
SO-8
I
–
–
MS-10,
SO-10
Package
Li-Ion 4.2V/Cell Linear Battery Chargers – Standalone
C/10
I
I
I
I
I
I
I
I
I
I
I
I
4.5 – 6.5V
Timer
–
–
0.95A
4.25 – 6.5V
C/x
1
0.95A
4.25 – 6.5V
C/10
LTC4075
LTC4076
LTC4077
1
0.95A
4.3 – 8V
Dual Input
USB or
Adapter
C/x (USB C/x)
C/x (USB C or C/5)
C/10 (USB C/x)
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
LTC4061
1
1A
4.3 – 8V
Timer + C/x
LTC4062
1
1A
4.3 – 8V
Timer + C/x
LTC4063
1
1A
4.3 – 8V
Timer + C/x
I
I
I
LTC4055
1
1A
4.3 – 5.5V
Timer
LTC4053
1
1.25A
4.25 – 6.5V
Timer + C/10
I
I
I
I
I
LTC1733
1
1.5A
4.5 – 6.5V
Timer + C/10
LTC4066
1
1.5A
4.35 – 5.5V
Timer + C/x
I
I
LTC4085
1
1.5A
4.35 – 5.5V
Timer + C/10
LTC4089/-1
1
1.5A
4.35 – 5.5V
Timer + C/10
I
I
I
I
LTC4050
1
2A
4.5 – 10V
Timer + C/10
–
–
LTC1731
1, 2
2A
4.5 – 12V
Timer + C/10
–
–
I
I
I
I
I
I
LTC1732
1, 2
2A
4.5 – 12V
Timer + C/10
–
–
I
LTC4065
1
0.75A
3.75 – 5.5V
Timer + C/10
LTC4065A
1
0.75A
3.75 – 5.5V
Timer + C/10
LTC4069
1
0.75A
3.75 – 5.5V
Timer + C/10
LTC4054/L
1
0.8/
0.15A
4.25 – 6.5V
LTC4056
1
0.9A
LTC4068
1
LTC4058
–
I
–
–
–
–
–
I
I
DFN-6
MS-10,
DFN-10
QFN-24
DFN-14
DFN-22
MS-10
Li-ION 4.2V/CELL LINEAR
Li-ION 4.0V/CELL, 4.1V/CELL, 4.4V/CELL LINEAR
Li-Ion 4.2V/Cell Linear Battery Chargers – Non-Standalone
LTC4059/A: 900mA Linear Li-Ion Battery Chargers in 2 x 2 DFN
LTC4059: Complete Charge Cycle
(800mAh Battery)
700
CHARGE CURRENT (mA)
4.4
Constant Current
600
Constant Voltage
4.2
500
4.0
400
3.8
300
3.6
VCC = 5V
RPROG = 2k
200
BATTERY VO LTAGE (V)
LTC4059: Actual Size,
Complete Solution
3.4
3.2
100
0
0
0.5
1.0
1.5
2.0
3.0
2.5
TIME (Hours)
Batt.
Cells
Part No.
(series)
Max
Charge
Current
Input
Voltage
Charge
Integrated
Termination Pass
Method
Transistor
ICHARGE
Monitor
End-ofCharge
Signal
AC
Present
Signal
Thermal
Reg.
Thermistor
Interface
Package
–
–
–
–
ThinSOT
–
–
ThinSOT
–
–
DFN-6
–
I
I
I
I
–
–
–
DFN-6
Li-Ion 4.2V/Cell Linear Battery Chargers – Non-Standalone
LTC1734/L
1
0.7/0.18A 4.55 – 8V
µController
–
LTC4057
1
0.8A
4.25 – 6.5V
µController
LTC4059
1
0.9A
3.75 – 8V
µController
LTC4059A
1
0.9A
3.75 – 8V
µController
I
I
I
I
I
I
I
Li-Ion 4.0V, 4.1V and 4.4V/Cell Linear Battery Chargers
LTC4064: Monolithic Linear Charger for Backup Li-Ion Batteries
VIN = 5V
Charging Li-Ion cells to lower float voltages (4.0V – 4.1V) increases
battery cycle life. As a consequence, batteries are not charged to
100% capacity.
VCC
SHDN
4.7µF
4.4V Li-Ion cells allow for higher voltage charging and have approximately 10% higher capacity than conventional 4.2V Li-Ion batteries.
TIMER
LTC4064
GND
0.1µF
Batt.
Cells
Part No.
Cell
(series) Voltage
Max
Charge
Current
Standalone
Charge
Termination
Method(s)
Integr.
Pass
Trans.
ICHARGE
Monitor
IBAT = 1A
BAT
VFLOAT = 4V
PROG
1.5k
1%
NTC
1-CELL
Li-Ion
Battery
End-ofCharge
Signal
AC
Present
Signal
Thermistor
Interface
Package
–
–
–
ThinSOT
I
I
I
I
I
I
I
DFN-10
–
I
I
I
–
–
MS-8
I
–
MS-10
Li-Ion 4.0V/Cell, 4.1V/Cell and 4.4V/Cell Linear Battery Chargers
LTC1734
1
4.1V
0.7A
LTC4061-4.4
1
4.4V
1A
LTC4064
1
4.0V
1.25A
LTC4089-1
1
4.1V
1.5A
LTC1731
1, 2
4.1V
2A
LTC1732
1, 2
4.1V
2A
I
I
I
–
µController
–
I
I
I
I
I
Timer + C/x
Timer + C/10
I
I
I
Timer + C/10
–
–
Timer + C/10
–
–
Timer + C/10
–
MS-10
DFN-22
05
06
USB COMPLIANT
USB Compliant Battery Chargers
LTC4085: USB Power Manager with Ideal Diode Controller and
Li-Ion Battery Charger
5V Wall
Adapter Input
Linear Technology’s USB compliant battery chargers offer high
charge current accuracy for both high-power (500mA) and
low-power (100mA) USB systems. They optimize efficiency,
minimizing USB power loss.
<50mΩ Ideal Diode
WALL
5V(NOM)
USB Cable
IN
To LDOs
Regs, etc.
OUT
NTC
LTC4085
CHRG
GATE
BAT
ACPR
TIMER PROG
Part No.
Max.
Charge
Current
Input
Voltage
RDS (ON)
of Ideal Diode
Standby
Current
IBAT
Drain
Current
Standalone
Onboard
Charge
Termination
GND
Li-Ion
Battery
Thermal
Regulation
Integrated
Transistor
I
I
I
QFN-16
I
DFN-22
Package
USB Power Managers and Li-Ion Linear Battery Chargers with PowerPath Control
Timer + C/10
15µA
I
I
I
Timer + C/10
I
I
I
15µA
I
Timer + C/10
I
LTC4055
1.25A
4.3 – 5.5V
200mΩ
50µA
2.5µA
LTC4066
1.5A
4.35 – 5.5V
50mΩ
50µA
2.5µA
LTC4085
1.5A
4.35 – 5.5V
200mΩ
(50mΩ opt.)
50µA
LTC4089/-1
1.5A
4.35 – 5.5V
215mΩ
(<50mΩ opt.)
50µA
LTC4075: Dual Input USB/AC Adapter Standalone Linear
Li-Ion Battery Charger
Timer + C/x
Wall
Adapter
USB Port
DCIN
QFN-24
DFN-14
950mA (Wall)
500mA (USB)
BAT
LTC4075
USBIN
Li-Ion
IUSB
IDC
ITERM
GND
Part No.
Max.
Charge
Current
Input Voltage
Standby
Current
IBAT
Drain
Current
Standalone
Charge
Termination
Method(s)
Thermal
Regulation
Integrated
Transistor
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Package
USB Compliant Linear Li-Ion 1-Cell Battery Chargers
LTC4065/A/69
0.75A
3.75 – 5.5V
30µA
±1µA
LTC4054
0.8A
4.25 – 6.5V
200µA
±1µA
I
I
LTC4057
0.8A
4.25 – 6.5V
200µA
±1µA
–
µController
LTC4059/A
0.9A
3.75 – 8V
25µA
±1µA
–
µController
LTC4058
0.95A
4.25 – 6.5V
200µA
±1µA
LTC4068
0.95A
4.25 – 6.5V
200µA
±1µA
LTC4075
LTC4076
LTC4077
0.95A
4.3 – 8V Dual
Input USB or
Adapter
50µA
±1µA
LTC4061
1A
4.3 – 8V
130µA
±1µA
LTC4062
1A
4.3 – 8V
130µA
±1µA
LTC4064
1A
4.25 – 6.5V
25µA
±1µA
LTC4053
1.25A
4.25 – 6.5V
25µA
±1µA
I
I
I
I
I
I
I
I
I
Timer + C/10
C/10
C/10
C/x
C/x (USB C/x)
C/x (USB C or C/5)
C/10 (USB C/x)
Timer + C/x
Timer + C/x
Timer + C/10
–
Timer + C/10
I
DFN-6
ThinSOT
ThinSOT
DFN-6
DFN-8
DFN-8
DFN-10
DFN-10
DFN-10
DFN-10
DFN-10
MS-10
MS-10,
DFN-10
O N - C H I P R E G U L AT O R O R C O M PA R AT O R
Battery Chargers with On-chip Regulators or Comparators
LTC3455: Dual DC/DC Converter with USB Power Manager and
Li-Ion Battery Charger
VMAX is Connected to the Best
Available Input Power Source
(Wall Adapter, USB or Battery)
The addition of on-chip functional blocks such as regulators
and comparators to Linear Technology’s USB compliant
battery chargers provides a higher level of integration, enabling
more compact solutions for today’s feature-rich portable devices.
USB Power
3.9V – 5 .3V
USB Power
Manager
Li-Ion Battery
3.3V – 4.2V
USB Power
Manager
Switcher 1
VOUT1
1.8V Typical (600mA)
Battery
Charger
Switcher 2
VOUT2
3.3V Typical (900mA)
Gain Block
Hot Swap
Use for
LDO or Low
Battery
Indicator
Max.
Charge
Current
Part No.
Input
Voltage
Ideal
Diode
Standby
Current
IBAT
Drain
Current
5V Wall
Adapter
Standalone
VMAX
Use to Power Other
DC/DCs and LDOs
Onboard
Charge
Thermal
Termination Regulation
Hot Swap
Output
3.3V Typical
Integrated
Transistor
Package
I
QFN-24
USB Power Manager and Li-Ion Linear Battery Charger with PowerPath Control and Onboard Switching Regulator
1A
LTC3455
I
4.3 – 5.5V
50µA
I
2.5µA
I
C/10
LTC4063: Standalone Linear Li-Ion Battery Charger
and 100mA LDO
< 1A
VIN
4.3V to 8V
VCC
BAT
LTC4063
TIMER
PROG
VOUT
3V
OUT
FB
Single Cell
Li-Ion
Battery
GND
Part No.
Max
Charge
Current
Input
Voltage
Switching
Regulator(s)
LDO
Comparator Standalone
Onboard
Charge
Thermal
Termination Regulation
Integrated
Transistor
Package
Li-Ion Linear Battery Chargers with Onboard Regulator or Comparator
LTC4063
1A
4.3 – 8V
IOUT = 100mA
VOUT= 1.2–4.2V
–
LTC4062
1A
4.3 – 8V
–
–
LTC3455
1A
4.3 – 5.5V
–
IOUT1 = 600mA
IOUT2 = 900mA
–
IQ = 9µA
–
I
Timer + C/x
I
I
DFN-10
I
I
Timer + C/x
I
I
I
I
DFN-10
C/10
QFN-16
07
08
CHARGE MONITORING / GAS GAUGING
Linear Battery Chargers with Charge Monitoring / Gas Gauging
LTC4068: USB Compliant Standalone Linear Li-Ion
Battery Charger
Single Cell Li-Ion Battery Charger with C/5 Termination
Simplify charging and gas gauging with a single IC. Linear
Technology offers battery chargers that include an output signal
pin with a voltage proportional to the charge current for simple
gas gauging (VPROG). For more sophisticated gas gauging, Linear
offers the LTC4150.
VIN
4.5V – 6.5V
VCC
600mA
BAT
LTC4068-4.2
ITERM
CHRG
Li-Ion
Battery
ACPR
EN
825Ω
PROG
GND
1µF
1.65k
LTC4065: Actual Size,
Complete Solution
Batt.
Cells
Part No.
Max
Charge
(series) Current
Charge
Termination
Method(s)
Input
Voltage
Integrated
Pass
Transistor
ICHARGE
Monitor
End-ofCharge
Signal
AC
Present
Signal
Thermal
Reg.
Thermistor
Interface
Package
–
–
–
–
ThinSOT
I
I
I
–
–
DFN-6
I
–
DFN-6
I
DFN-6
–
–
Li-Ion 4.2V/Cell Linear Battery Chargers – Standalone
Timer + C/10
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Timer + C/10
I
I
LTC1734
1
0.7A
4.55 – 8V
µController
LTC4065
1
0.75A
3.75 – 5.5V
Timer + C/10
LTC4065A
1
0.75A
3.75 – 5.5V
Timer + C/10
LTC4069
1
0.75A
3.75 – 5.5V
Timer + C/10
LTC4057
1
0.8A
4.25 – 6.5V
µController
LTC4059
1
0.9A
3.75 – 8V
µController
LTC4059A
1
0.9A
3.75 – 8V
µController
LTC4068
1
0.95A
4.25 – 6.5V
C/x
LTC4058
1
0.95A
4.25 – 6.5V
C/10
LTC4061
1
1A
4.5 – 8V
Timer + C/x
LTC4062
1
1A
4.3 – 8V
Timer + C/x
LTC4063
1
1A
4.3 – 8V
Timer + C/x
LTC4053
1
1.25A
4.25 – 6.5V
LTC1733
1
1.5A
4.5 – 6.5V
Part No.
Sense
Voltage
Range
Sense
–
–
–
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Charge
Quantity
Charge
Polarity
I
I
–
–
–
–
I
I
I
I
I
I
I
I
–
Input
Voltage
Charge Count
Frequency
Shutdown
Current
# Li-Ion
Cells
# Nickel
Cells
2.7 – 8.5V
32.55 Hz/V
1.5µA
1-2
3-6
–
ThinSOT
–
DFN-6
–
DFN-6
–
DFN-8
–
DFN-8
I
DFN-10
–
DFN-10
–
DFN-10
I
MS-10,
DFN-10
I
MS-10
Package
Gas Gauge – Coulumb Counter
LTC4150*
*See Page 17.
±50mV
High Side
MS-10
LOW CURRENT / COIN CELL
NO TRICKLE CHARGE
Low Current / Coin Cell Battery Chargers
LTC4054L: 150mA Standalone Li-Ion Battery Charger for Coin Cells
90mA Li-Ion Single Coin Cell Charger
Linear Technology’s coin cell battery chargers enable highly accurate
charging for low-capacity, charge-sensitive cells used in thin, compact
devices such as Bluetooth headsets and hearing aids.
VIN 4.5V – 6.5V
VCC
0.1µF
90mA
BAT
LTC4054L-4.2
4.2V
Li-Ion
Battery
PROG
GND
Charge
Current
Range
Part No.
Input Voltage
Standalone
Charge
Termination
Method
Thermal
Regulation
Integrated
Transistor
1.69k
Charger
Type
Package
Coin Cell Li-Ion Battery Chargers
I
LTC4054L
10 – 150mA
4.25 – 6.5V
LTC4059
90 – 900mA
3.75 – 8V
–
LTC1734L
10 – 180mA
4.55 – 8V
–
I
I
Linear
ThinSOT
µController
I
I
Linear
DFN-6
µController
–
–
Linear
ThinSOT
C/10
Li-Ion Linear Battery Chargers with No Trickle Charge
LTC4054X: Standalone, No Trickle Charge Linear Li-Ion Battery
Charger with Thermal Regulation in ThinSOT
600mA No Trickle Charge Li-Ion Charger
VIN 5V – 6.5V
This extended family of linear battery chargers ensures proper
system operation and startup for applications with a load current
higher than the normal trickle charge current or a battery voltage
below the normal trickle charge threshold.
VCC
0.1µF
600mA
BAT
LTC4054X–4.2
PROG
GND
Batt.
Cells
Part No.
(series)
Max
Charge
Current
Input Voltage
Onboard
Integrated
Charge
Pass
Termination Transistor
ICHARGE
Monitor
End-ofCharge
Signal
AC
Present
Signal
1.65k
Thermal
Regulation
4.2V
Li-Ion
Battery
Package
Li-Ion 4.2V/Cell Linear Battery Chargers – Standalone, Fast Trickle Charge
LTC4054X
1
0.8A
4.25 – 6.5V
C/10
LTC4068X
1
0.95A
4.25 – 6.5V
C/x
LTC4058X
1
0.95A
4.25 – 6.5V
C/10
LTC4075X
1
0.95A
4.3 – 8V
Dual Input
USB or Adaper
C/x
I
I
I
I
I
I
I
I
I
I
I
I
–
I
I
I
I
I
I
I
ThinSOT
DFN-8
DFN-8
DFN-10
09
T H E R M A L R E G U L AT I O N & T H E R M I S T O R I N T E R FA C E
Battery Chargers with Thermal Regulation and/or Thermistor Interface
LTC4061: Standalone Linear Li-Ion
Battery Charger
LTC4061: Actual Size,
Complete Solution
Thermistor Interface
VCC
Linear Technology’s patented thermal
regulation technology maximizes charge
current without risking overheating during
high-power operation or high ambient
temperature conditions.
Too Cold
NTC
Thermal Regulation
900
800
700
1/2 VCC
RNTC
10k
1000
A thermistor interface allows battery
temperature measurement, for
temperature-qualified charging.
7/8 VCC
RHOT
1%
I B AT (mA)
10
Too Hot
Thermal Control
Loop in Operation
600
3/160 VCC
500
Disable NTC
400
300
LTC4064
200
100
0
-50
-25
0
25
50
75
100
TEMPERATURE (°C)
Batt.
Cells
Part No.
Cell
(series) Voltage
Max
Charge
Current
Input Voltage
Integrated
Pass
Transistor
Charge
Termination
Method(s)
Timer + C/10
C/x (USB C/x)
C/x (USB C or C/5)
C/10 (USB C/x)
Thermal
Reg.
Thermistor
Interface
–
DFN-6
I
DFN-6
Timer + C/x
I
I
I
I
I
I
I
I
I
I
I
I
I
Package
Li-Ion Linear Battery Chargers – Standalone
LTC4065/A
1
4.2V
0.75A
3.75 – 5.5V
LTC4069
1
4.2V
0.75A
3.75 – 5.5V
LTC4054/L/X
1
4.2V
0.8A
4.25 – 6.5V
LTC4068/X
1
4.2V
0.95A
4.25 – 6.5V
LTC4058/X
1
4.2V
0.95A
4.25 – 6.5V
LTC4075/X
LTC4076
LTC4077
1
4.2V
0.95A
4.3 – 8V
Dual Input USB
or Adapter
LTC4061
1
4.2/4.4V
1A
4.5 – 8V
LTC4062
1
4.2V
1A
4.3 – 8V
LTC4063
1
4.2V
1A
4.3 – 8V
LTC4064
1
4.0V
1A
4.25 – 6.5V
LTC4053
1
4.2V
1.25A
4.25 – 6.5V
I
I
I
I
I
I
I
I
I
I
I
I
I
LTC1733
1
4.2V
1.5A
4.5 – 6.5V
I
Timer + C/10
I
LTC4050
1
4.2V
2A
4.5 – 12V
–
Timer + C/10
–
Timer + C/10
C/10
C/10
C/x
Timer + C/x
Timer + C/x
Timer + C/x
Timer + C/10
–
ThinSOT
–
DFN-8
–
DFN-8
–
–
–
DFN-10
DFN-10
DFN-10
I
DFN-10
–
DFN-10
–
DFN-10
I
I
MS-10
I
I
MS-10
MS-10
DFN-10
MS-10
Li-Ion Linear Battery Chargers – Non-Standalone
LTC4057
1
4.2V
0.8A
4.25 – 6.5V
LTC4059/A
1, 2
4.2V
0.9A
3.75 – 8V
I
I
µController
µController
I
I
–
ThinSOT
–
DFN-6
I
I
I
I
QFN-16
USB Power Managers and Li-Ion Linear Battery Chargers with PowerPath Control
Timer + C/10
4.35 – 5.5V
I
I
I
I
Timer + C/10
I
I
I
I
4.5 – 12V
I
Timer + C/10
–
I
SO-8
4.5 – 10V
–
T, t, dV
–
I
DFN-16
LTC4055
1
4.2V
1.25A
4.3 – 5.5V
LTC4066
1
4.2V
1.5A
4.35 – 5.5V
LTC4085
1
4.2V
1.5A
4.35 – 5.5V
LTC4089/-1
1
4.2/4.1V
1.5A
Timer + C/x
Timer + C/10
QFN-24
DFN-14
DFN-22
Li-Ion Pulse Battery Chargers – Standalone
LTC1730
1
4.1/4.2V
1A
NiCd / NiMH Linear Battery Charger – Standalone
LTC4060
1–4
1.5
2A
SWITCHMODE & SMART CHARGERS
Switchmode and Smart Battery Chargers with Thermistor Interface
LTC4002: Standalone Li-Ion Switchmode Battery Charger
1.5A Single Cell Li-ion Battery Charger
VIN 5V – 22V
Linear Technology’s switchmode battery chargers utilize small,
space-saving inductors to allow efficient charging from high
input voltages while delivering high current.
BAT
10µF
0.1µF
VCC
2k
GATE
Charge
Status
6.8µH
CHRG
LTC4002-4.2
SENSE
LTC4002: Actual Size,
Complete Solution
68m�
COMP
GND
NTC
0.47µF
Thermistor
Interface
Part No.
Topology
T
2.2k
BAT
10k
NTC
22µF
+
Li-Ion
Battery
VBAT
Range
Battery
Chemistry
Battery
Pack(s)
Max
Charge
Current
Input
Voltage
External
MOSFET(s)
Thermistor
Interface
Package
Smart Battery Chargers
LTC4100
Switchmode
SMBus
7 – 26V
Li-Ion
NiCd NiMH
Lead-Acid
Single
4A
6 – 28V
Synchronous
I
SSOP-24
LTC1760
Switchmode
SMBus
6 – 28V
Li-Ion
NiCd NiMH
Lead-Acid
Dual
4A
6 – 28V
Synchronous
I
TSSOP-48
LTC1759
Switchmode
SMBus
3 – 23V
Li-Ion
NiCd NiMH
Lead-Acid
Single
8A
3 – 24V
Synchronous
I
SSOP-36
(series)
Charge
Termination
Method(s)
Max*
Charge
Current
Input
Voltage
External
MOSFET(s)
Thermistor
Interface
Package
Part No.
# Cells
or VBAT
Range
Battery
Chemistry
Number
of Cells
Switchmode Battery Chargers
LTC4002
1 or 2 cell
Li-Ion
1–2
Timer
4A
4.7 – 24V
P-channel
I
DFN-10,
SO-8
LTC4011
1 – 16 cells
NiCd NiMH
1 – 16
T, t, dV, dT/dt
4A
4.5 – 34V
Synchronous
1 – 16 cells
NiCd NiMH
1 – 16
T, t, dV, dT/dt
4A
4.5 – 34V
Synchronous
LTC4007
3 – 4 cells
Li-Ion
3–4
Timer + C/10
4A
6 – 28V
Synchronous
LTC4006
2 – 4 cells
Li-Ion
2–4
Timer + C/10
4A
6 – 28V
Synchronous
LTC4008
3 – 28V
Li-Ion
NiCd NiMH
Lead-Acid
Chemistry
Dependent
µController
4A
6 – 28V
Synchronous
I
I
I
I
I
TSSOP-20
LTC4010
LTC4001
1 cell
Li-Ion
1
Timer + C/x
2A
4 – 5.5V
Synchronous
I
4x4 QFN-16
TSSOP-16
SSOP-24
SSOP-16
SSOP-20
11
12
S M A R T B AT T E RY C H A R G E R S
Smart Battery Chargers
LTC1760: Dual Smart Battery System Manager
Dual Battery Charger/Selector System Architecture
LTC4100: Smart Battery Charger Controller
DC IN
Linear Technology’s smart battery chargers offer true plug-andplay operation independent of chemistry and cell configuration,
built-in safety features, reliable battery detection and automatic
charge management.
System
Power
LTC1760
LTC1760: Actual Size,
Complete Solution
SMBUS
(Host)
SafetySignal 1
SMBus 1
SafetySignal 2
SMBus 2
DCIN
0.1µF
13.7k
5k
1.21k
LTC4100
3V to 5.5V
CHGEN
ACP
DCIN
DCDIV
INFET
CHGEN
CLP
ACP
CLN
SMBALERT
TGATE
SCL
BGATE
SDA
PGND
THB
CSP
THA
BAT
0.25�
BAT
10µH
20µF
VLIM
GND
10k
THERM
SMBALERT
SCL
SDA
Part No.
VBAT
Range
Max
Charge
Current
0.033k
ILIM
1.13k
54.9k
0.1µF
VDD
SCL
SDA
Standalone
Serial
Bus
Type
Single
or Dual
Battery
Pack
Float
Voltage
Accuracy
Safety
Limits
(V&I)
AC
Presence
Output
Charger
“ON”
Status
Thermistor
Interface
Package
SMBus / SPI Battery Charger Controllers
LTC4100
7 – 26V
4A
I
SMBus
1.1
Single
0.8%
I
I
pin
I
SSOP-24
LTC1760
5 – 28V
4A
I
SMBus
1.1
Dual
0.2%
I
I
pin
I
TSSOP-48
LTC1759
3 – 21V
8A
I
SMBus
1.0
Single
1%
I
–
pin
I
SSOP-36
LTC1960
6 – 28V
8A
–
SPI
Dual
0.8%
–
–
SPI
–
SSOP-36
PULSE
SWITCHMODE BUCK-BOOST
Pulse Battery Chargers
LTC4052: Li-Ion Battery Pulse Charger
with Overcurrent Protection
Single Cell 4.2V, 1A, Standalone Li-ion Pulse Battery Charger
Linear Technology’s pulse battery chargers
dissipate only 280mW while fast charging at
0.8A from a 9V current limited input source,
whereas a linear charger dissipates as much
as 4.8W. Unlike switchmode chargers where
an inductor is used to achieve high efficiency,
a pulse charger dissipates minimal heat
without an inductor.
Limits Maximum
Current for Safety
VIN = 4.5V to 10V
with 1A Current Limit
4.7?
1µF
1k
10k
VIN
1k
ACPR
SENSE
TIMER
GND
0.022µF
BAT
Li-Ion
Battery
CTIMER
0.1µF
Batt.
Cells
Part No.
Max
Charge
(series) Current
Input
Voltage
RSENSE
0.05�
0.047µF
LTC4052
GATE
CHRG
Standalone
Onboard
Charge
Termination
Integr.
Pass
Trans.
Over Current
Protection
End-ofCharge
Signal
AC
Present
Signal
Thermistor
Interface
I
I
I
I
–
I
I
–
Package
Li-Ion Pulse Battery Chargers
LTC1730
1
1A
4.5 – 12V
LTC4052
1
1.5A
4.5 – 10V
I
I
I
I
Timer + C/10
Timer + C/10
SO-8
MS-10
Switchmode Buck-Boost Battery Chargers
LTC1980: Combination Battery Charger
and DC/DC Converter
Li-Ion Charger and DC/DC Converter Using One IC
POWER FLOW
Linear Technology’s buck-boost battery
chargers seamlessly charge a battery as
its voltage varies below, above or equal
to the input voltage.
Charging
Battery Operation
Li-Ion
Battery
Unregulated
Wall Adapter
Input (3V to 10V)
System
Power
BAT-FET
REG-FET
LDO/
Switch
System Load
DC/DC
Converters
3.3V
1.8V
1.5V
LTC1980
Part No.
VBAT
Range
Battery
Chemistry
Number
of Cells
(series)
Max
Charge
Current
Input
Voltage
Integrated
Switch
Synchronous
Charge
Termination
Method(s)
Package
Switchmode Buck-Boost (Step-Down/Step-Up) Battery Chargers
LT1512
1.5 – 20V
NiCd NiMH
Lead-Acid
1 – 18
0.8A
2.4 – 29V
I
–
µController
SO-8
LT1513
1.5 – 20V
NiCd NiMH
Lead-Acid
1 – 18
1.6A
2.4 – 29V
I
–
µController
DDPak
TO220
LTC1980
2.85 – 10V
NiCd NiMH
Li-Ion
1–2
4A
4.1 – 12V
–
–
Timer + C/10
SSOP-24
13
14
SWITCHMODE BUCK
Switchmode Buck Battery Chargers
LTC4008: 4A, High Efficiency, Multi-Chemistry Battery Charger
Linear Technology’s step-down (buck) battery chargers enable high efficiency charging from
high input voltages for a variety of battery chemistries.
4A Synchronous Multi-Chemistry Switchmode Battery Charger Controller
Input Switch
DCIN
0V – 28V
LTC4008
VLOGIC
0.1µF
DCIN
100k
100k
ICL
32.4k
CLN
FAULT
TGATE
FLAG
BGATE
NTC
PGND
RT
CSP
150k
GND
Part No.
Battery
Chemistry
Number of
Cells (series)
Max
Charge
Current
20µF
3.01k
Li-Ion
Battery
3.01k
Charging
Current
Monitor
PROG
0.47µF
VBAT
Range
0.025�
10µH
BAT
Thermistor
10k
NTC
System
Load
CLP
ACP/SHDN
LTC4008: Actual Size,
Complete Solution
0.002�
5.1k
INFET
0.0047µF
26.7k
Input
Voltage
Integrated
Switch
Synchronous
Charge
Termination
Method(s)
Package
Switchmode Multi-Chemistry Buck (Step-Down) Battery Chargers
LT1510
2.5 – 26V
NiMH NiCd
SLA Li-Ion
1-12 Ni SLA
1-4 Li-Ion
1A
7 – 29V
I
–
µController
or LTC1729
SO-8, SSOP,
SO-16
LT1769
2.5 – 26V
NiMH NiCd
SLA Li-Ion
1-12 Ni SLA
1-4 Li-Ion
2A
7 – 29V
I
–
µController
or LTC1729
TSSOP-20,
SSOP-28
LT1511
2.5 – 26V
NiMH NiCd
SLA Li-Ion
1-12 Ni SLA
1-4 Li-Ion
3A
7 – 29V
–
–
µController
or LTC1729
SO-24
LTC4008
3 – 28V
NiMH NiCd
SLA Li-Ion
4-18 Ni SLA
2-6 Li-Ion
4A
6 – 28V
–
I
µController
SSOP-20
LT1505
2.5 – 23V
NiMH NiCd
SLA Li-Ion
1-12 Ni SLA
1-4 Li-Ion
8A
6.7 – 26V
–
I
µController
SSOP-28
Switchmode Li-Ion Buck Battery Chargers
LT1571
2.5 – 26V
Li-Ion
1-2, adj
1.5A
6.2 – 27V
I
–
LTC1729
SSOP-16,
SSOP-28
LTC4001
2.5 – 5.5V
Li-Ion
1
2A
4 – 5.5V
I
I
Standalone
(Timer + C/x)
4x4 QFN-16
LTC4002
2.5 – 8.4V
Li-Ion
1-2
4A
4.7 – 22V
–
–
Standalone
(Timer)
DFN-10,
SO-8
LTC4006
5 – 16.8V
Li-Ion
2-4
4A
6 – 28V
–
I
Standalone
(Timer + C/10)
SSOP-16
LTC4007
7.5 – 16.8V
Li-Ion
3-4
4A
6 – 28V
–
I
Standalone
(Timer + C/10)
SSOP-24
SWITCHMODE BUCK
Switchmode Buck Battery Chargers
LT1769: 2A Monolithic Switchmode Battery Charger
2A Monolithic Lithium-Ion Switchmode Battery Charger
CLP
SW
CLN
VCC
LT1769
0.47µF
20H
MBRD340
GND
BOOST
MBRD340
500Ω
1µF
VIN
(Adapter Input)
11V – 28V
Adapter
Current Sense
To Main
System Power
10µF
MBR0540T
UV
SPIN
PROG
SENSE
BAT
5k
4.93k
200Ω
200Ω
VBAT
0.033Ω
Battery Current
Sense
4.2V
22µF
4.2V
2 Li-Ion
LTC4006: 4A High Efficiency, Standalone Li-Ion Switchmode Battery Charger
4A Lithium-Ion Switchmode Battery Charger
DCIN
0V – 28V
3A
Input Switch
5k
0.1µF
100k
DCIN
INFET
CHG
CLP
ACP/SHDN
IMON
Charging
Current Monitor
Thermistor
10k
NTC
15nF
LTC4006
VLOGIC
32.4k
0.0047µF
0.47µF
309k
System Load
CLN
TGATE
BGATE
NTC
0.033�
PGND
RT
CSP
GND
BAT
0.025�
10µH
20µF
Li-Ion
Battery
15
16
H I G H S I D E & L O W S I D E B AT T E RY C U R R E N T S E N S I N G / B AT T E RY M O N I T O R I N G
Precision Current Sense Amplifiers
Linear Technology offers precision high-side current sense
amplifiers with reverse battery protection, low quiescent current,
separate power supply inputs and tiny packages.
0A to 33A High Side Current Monitor
4.1V to 48V
Supply
For low-side current sensing, the best solutions are micropower,
rail-to-rail input amplifiers with low input bias current and low
offset voltage.
3V
VCC
VS+
VOUT
RSENSE
3mΩ
Load
VS–
LT6100
VOUT = 2.5V
ISENSE = 33V
VEE
220pF
Part No.
Input
Voltage
Range
Directional
Sense
Offset
Voltage
(Max @ 25°C)
Large
Offset Voltage Signal Step
Drift (Typ)
Response
Gain Configuration
Separate
Supply
Input
Package
High Side Current Sense Amplifiers
LT6100
4.1 – 48V
Uni-directional
300µV
0.5µV/°C
50µs
5 Gain Settings
Yes
DFN-8, MSOP-8
LTC6101
4 – 60V
Uni-directional
300µV
1µV/°C
1µs
Adj w/ 2 Resistors
Optional
ThinSOT, MSOP-8
LTC6101HV
5 – 100V
Uni-directional
300µV
1µV/°C
1µs
Adj w/ 2 Resistors
Optional
ThinSOT, MSOP-8
LT1787
2.5 – 36V
Bi-directional
75µV
0.5µV/°C
15µs
Fixed Av=8
No
SO-8, MSOP-8
LT1787HV
2.5 – 60V
Bi-directional
75µV
0.5µV/°C
15µs
Fixed Av=8
No
SO-8, MSOP-8
Part No.
Description
ISUPPLY
VOS
IBIAS
VS Range
Packages
Low Side Current Sense Amplifiers
LT1490A/91A
Dual/Quad Rail-to-Rail Over-The-Top®
50µA
500µV
8nA
2 – 44V
DFN-8, DIP-8, MSOP-8, SO-8
DIP-14, SO-14
LT1636
Over-The-Top, Single Supply
55µA
225µV
8nA
2.6 – 44V
DFN-8, DIP-8, MSOP-8, SO-8
LT1638/39
Dual/Quad, Rail-to-Rail Over-The-Top
230µA
600µV
50nA
2.2 – 44V
DFN-8, DIP-8, MSOP-8, SO-8
DIP-14, SO-14
LTC2054/55
Single/Dual Zero-Drift 3V, 5V Operation
150µA
3µV
3nA
2.7 – 12V
ThinSOT, DFN-8, MSOP-8
LT6010/11/12
Single/Dual/Quad Rail-to-Rail Output
150µA
35µV
0.11nA
2.7 – 40V
DFN-8, SO-8
Comparator and Voltage Reference Building Blocks
The combination of micropower comparators and a voltage reference in a single package provides an ideal building block for battery
monitoring. Typical applications include circuits for gas gauge battery monitoring, low-battery load reduction, backup battery switchover
and window comparators with hysteresis.
Part No.
Description
Supply
Voltage
Prop Delay
Typ
ISUPPLY
Typ
Package
Comparator & Reference Combinations
LTC1440/41/42
Single/Dual Comparator & Reference
2 – 11V
8µs
2.1µA
MSOP-8, SO-8, DIP-8, DFN-8
LTC1443/44/45
Quad Comparator & Reference
2 – 11V
4µs
5.5µA
DIP-16, SO-16, DFN-16
LTC1540
Nanopower Comparator & Reference
2 – 11V
50µs
0.3µA
MSOP-8, SO-8, DFN-8
LTC1541
Micropower Amplifier, Comparator & Reference
2.5 – 12.6V
8µs
5µA
MSOP-8, SO-8, DFN-8
LTC1842/43
Ultralow Power Dual Comparators with Reference
2.5 – 11V
4µs
3.5µA
SO-8
LTC1998
1% Voltage Monitor, Ideal for Li-Ion Batteries
1.5 – 5.5V
150µs
2.5µA
ThinSOT
LT6700-1/-2/-3
Low Voltage Dual Comparator & 400mV Reference
1.4 – 18.5V
18µs
6.5µA
ThinSOT, DFN-6
SUPPORT DEVICES
Battery Charger Support Devices
LTC4150: Coulomb Counter and Battery
Gas Gauge
Coulomb Counter
Charger
RSENSE
Load
Package: MSOP-10
4.7µF
SENSE–
RL
INT
4.7µF
CLR
LTC4150
µP
CHG
CF–
DISCHG
POL
SHDN
GND
LTC1729: Li-Ion Battery Charger
Termination Controller
RL
VDD
SENSE+
CF+
Combination Battery Charger Termination Controller (LTC1729) and Switchmode Charger
Package: MSOP-8, SO-8
VCC
SW
LT1510-5
0.22µF
PROG
L1
10µH
BOOST
GND
MMBD914L
VC
OVP
Input Power
8.2V – 20V
CIN
10µF
1µF
300Ω 6.19k
1k
0.1µF
BAT
SENSE
4.2V
COUT
22µF
0.1µF
OVP
200Ω
1µF
BAT
LTC1729-4.2
SENSE
1.4k
VCC
VC
STATUS
NTC
GND
10k NTC Thermistor
OPTION: Tie resistor to status for charge termination at
low charging current
LT1579: 300mA Dual Input Smart Battery
Backup Regulator
5V Dual Battery Backup Supply
IN1
Package: SSOP-16, SO-16, SO-8
1µF
2.7M
LT1579-5
LBI1
LBO1
IN2
LB02
To Power
Management
BACKUP
2.7M
LBI2
1M
4.7µF
SS
SHDN
1M
1µF
5V
300mA
OUT
DROPOUT
BIASCOMP
GND
0.01µF
17
Battery
Charge Termination & Integration
Status Signals
Linear Battery Chargers Selector Guide
I CH A R G E
Monitor
Integrated Pass
Transistor
Charge
Termination
Method(s)
Standalone
Battery Charge
Current (max), A
Battery Cells
(series)
1.5
1
1
1
2
0.95
1.25
0.95
0.95
1.5
2
2
0.8
0.75
0.75
0.7
0.9
0.8
0.7
1
1
1
1
1
1
1
1
1, 2
1, 2
1
1
1
1
1
1
1
–
–
–
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I2
I1
I5
I5
I5
I1
I5
I5
I3
I4
I4
I4
I5
I5
I5
I5
I1, 2
I5
2
2
0.7
1, 2
1, 2
1
–
I
I
I
I5
I5
I5
I4
1
I
0.18
1
–
I
1.3
1
I
I
I5
I5
I1
I4
I5
I
I
–
I
I
–
–
–
I
–
I
I
–
I
I
I
–
–
I
I
I
I
I
–
I
I
I
I
I
I
I
–
–
I
I
I
I
I
–
–
I
I
I
I
–
I
I
I
–
–
I
I
I
I
I
–
I
I
I
–
–
I
I
I
–
I
I
–
I
I
I
–
–
–
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
1 Current C/10 2 Current C/x 3 Timer 4 µController 5 Timer with C/10 or C/x Indication
1.3
1
Li-Ion Pulse Battery Chargers
0.15
1
Li-Ion Coin Cell Battery Chargers
1
Li-Ion 4.0V/Cell Linear Battery Charger
1.5
1
Li-Ion 4.1V/Cell Linear Battery Chargers
1
1
Li-Ion 4.2V/Cell Linear Battery Chargers
1.25
1
I5
I5
I3
I3
End-of-Charge
Signal
I
I
I
I
I
I
–
–
I
–
–
I
I
–
–
I
–
–
I
–
–
I
I
I
I
I
I
I
–
–
I
I
I
I
–
AC Present
Signal
1.5
–
–
–
I
I
–
–
–
I
–
I
I
–
I
I
I
–
–
I
I
I
I
I
–
I
I
I
I
I
I
I
Thermal
Regulation
1.5
I
–
–
–
I
–
–
–
I
–
–
–
–
I
–
–
–
–
I
–
–
I
–
I
–
–
I
I
I
I
I
Thermistor
Interface
1
SO-8
SSOP-16
MS-10
ThinSOT
ThinSOT
MS-10
ThinSOT
MS-8
MS-10
MS-10
ThinSOT
ThinSOT
DFN-6
ThinSOT
DFN-6
DFN-6
ThinSOT
MS-8
MS-10
MS-10
DFN-8
DFN-8
DFN-10
MS-10
DFN-10
MS-10
DFN-10
DFN-10
DFN-10
DFN-14
QFN-16
QFN-24
DFN-22
Package
1
Li-Ion 4.2V/Cell Linear Battery Chargers with PowerPath Control
Temperature Control
LTC4075/76/77/X
LTC4050
LTC4063
LTC4062
LTC4061
LTC4085
LTC4055
LTC4066
LTC4089/-1
Most
Part Number
09
09
05, 06, 10
05, 08, 20
04, 05, 20
04, 05
04, 08, 10, 20
05, 08, 20
05, 06, 08, 10
10, 13
LTC1734L
LTC1734
LTC1734
05, 06, 08, 09, 10
04, 20
04, 06, 08, 10
13
LTC4057
LTC4059/A
LTC4056
04, 06, 08, 10
04, 06, 09,10, 20
04, 05, 20
04, 05
04, 08, 10, 20
04, 06, 08, 09, 10
04, 06, 08, 09, 10
04, 06, 08, 10, 20
04, 06, 09, 10
04, 10
04, 07, 08, 10
04, 06, 07, 08, 10, 20
04, 05, 06, 08, 10, 20
03, 04, 06, 10
03, 04, 06, 10, 20
03, 04, 06, 10
03, 04, 05, 06, 10
LTC1730
LTC4054L
LTC1731
LTC1732
LTC4069
LTC4065/A
LTC4054/X
LTC1731
LTC1732
Least
Page
LTC4052
LTC4064
LTC1733
LTC1733
LTC4058/X
LTC4068/X
LTC4053
Integration/Features
18
Battery
Battery Charge
Current (max), A
Battery Cells
(series)
2
1-4
I
I
I
4
4
2
1.5
4
3-4
2-4
1-2
1-2, adj
1-2
I3
I
–
I5
I5
I5
I5
I4, 7
I
I
I
I
–
I
–
–
–
I
–
–
–
–
–
–
–
I
–
–
–
I
I
–
I
I
I
–
–
I
I
I
–
I
I
I
I
I
I
I
I
I
–
–
I
Thermal
Regulation
–
–
–
–
–
–
–
–
–
Thermistor
Interface
Battery
Battery Charge
Current (max), A
VBAT Range
4
7-26V
~
–
–
–
–
SPI4
SMBus4
3
4
0.75
2
2
1
2.5-26V
3-28V
1.5-20V
1.5-20V
2.5-26V
2.5-26V
–
–
–
–
–
–
–
I4, 7
I4, 7
I4
I4, 7
I4, 7
I4, 7
I4, 7
–
I
I
I
I
–
I
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
I
–
I
–
–
–
–
–
–
–
I
–
–
I
–
–
I
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
I
–
–
I
–
I
I
DFN-10, SO-8
SSOP-28
SO-8, SSOP, SO-16
TSSOP-20, SSOP-28
DD Pak, TO-220
SO-8
SSOP-20
SO-24
SSOP-28
SSOP-24
SSOP-36
TSSOP-48
SSOP-36
1 Current C/10 2 Current C/x 3 Timer 4 µController 5 Timer with C/10 or C/x Indication 6 T, t, dV, dT/dt 7 for Li-Ion Terminator use LTC1729 8 dV, t, V, T
8
2.5-23V
Lead Acid, NiMH / NiCd, Li-Ion Switchmode Battery Chargers
8
6-28V
–
SMBus4
Charge
Termination
Method(s)
I
I CHARGE
Monitor
4
AC Present
Signal
5-28V
Thermal
Regulation
SMBus4
Thermistor
Interface
8
Temperature Control
Part Number
LTC1960
LTC1760
LTC1759
Most
LT1505
LTC4100
LTC4002
LT1571
Linear
LTC4060
LTC4008
LT1511
LT1769
LT1513
LT1512
Integration/Features
LTC1980
SSOP-16
LTC4006
SSOP-24
LTC4007
LTC4010
Integration/Features
SSOP-16
SSOP-24
4x4 QFN-16
DFN-16, TSSOP-16
LTC4001
LTC4011
TSSOP-16
TSSOP-20
Part Number
Most
Package
3-21V
Smart Battery Chargers
Standalone
–
Integrated Pass
Transistor
–
Status Signals
End-of-Charge
Signal
Charge Termination & Integration
Switchmode Multi-Chemistry and Smart Battery Chargers Selector Guide
2
1
I6
I6
I8
Temperature Control
Package
Li-Ion Switchmode Battery Chargers
4
Charge
Termination
Method(s)
4
I CH A R G E
Monitor
1-16
AC Present
Signal
1-16
NiMH / NiCd Battery Chargers
Standalone
I
I
I
Integrated Pass
Transistor
–
Status Signals
End-of-Charge
Signal
Charge Termination & Integration
Switchmode Battery Chargers Selector Guide
LT1510
Least
Least
02, 14, 17, 20
02, 14, 15
02, 13
02, 13
02, 11, 14
02, 14, 20
02, 14, 20
02, 11, 12, 20
02, 12, 20
11, 12, 20
02, 11, 12, 20
Page
11, 14
14
13, 20
11, 14, 20
11, 14
11, 14
02, 10
02, 11
02, 11
Page
19
20
Further Reading
Online at www.linear.com
Switchmode Battery Chargers
Device
DN244
Simple Li-Ion Charge Termination Using the LT1505
LT1505
LT Magazine
Fast Rate Li-Ion Battery Charger
LT1505
AN68
LT1510 Design Manual
LT1510
DN242
Li-Ion Charge Termination IC Interfaces with PWM Switchers
LT1510
DN111
LT1510 High Efficiency Lithium-Ion Battery Charger
LT1510
DN194
New Charger Topology Maximizes Battery Charging Speed
LT1511
DN144
LT1511 Low Dropout, Constant-Current/Constant-Voltage 3A Battery Charger
LT1511
DN124
Fused Lead Battery Charger ICs Need No Heat Sinks
LT1510/11
LT Magazine
1.5A and 3A Fast Charger ICs Charge All Battery Types Including Lithium-Ion
LT1510/11
LT Magazine
Feature-Rich Battery Charger that Manages Both Battery Charging and Bus Voltage Regulation
LTC1980
LT Magazine
Next Generation No Compromise Battery Chargers
LTC4006/7/8
Linear Battery Chargers
DN239
A Miniature, Low Dropout Battery Charger for Lithium-Ion Batteries
LTC1731
LT Magazine
Low Dropout Linear Li-Ion Charge Controllers Prevent Overcharging, Save Board Space
LTC1731/2
LT Magazine
LTC1733: Thermal Regulation Maximizes Lithium-Ion Battery Charging Rate Without Risk of Overheating
LTC1733
DN283
Li-Ion Linear Charger Allows Fast, Full Current Charging While Limiting PC Board Temperature to 85°C
LTC1733
LT Magazine
Very Low Cost Li-Ion Battery Charger Requires Little Area and Few Components
LTC1734
DN250
A Very Low Cost SOT-23 Li-Ion Battery Charger Requires Little Area and Few Components
LT Magazine
Decrease Li-Ion Battery Charge Time with a Monolithic Charger that Prevents Overheating
LTC4054
LT Magazine
New Standalone Linear Li-Ion Battery Chargers
LTC4061, LTC4062
USB Battery Chargers
LT Magazine
Complete USB Power Manager, Li-Ion Charger and Two Buck Converters in a 4mmx4mm QFN
LTC3455
DN1008
Simple, Efficient, All-in-One USB Power Management IC Solution
LTC3455
LT Magazine
Compact Solution Uses USB Power to Run a Device and Simultaneously Charge its Battery
LTC4053, LTC4410
LT Magazine
Complete USB Solution Provides PowerPath Control and Input Current Limiting while Charging a Li-Ion Battery
LTC4056
LT Magazine
USB Power Controller/Charger Reduces Both Design Time and Battery Charge Time
LTC4055
DN320
New ICs Simplify Battery Charging from the USB
LTC4053
DN336
Advanced Topology USB (Intermediate Bus) Battery Charger Optimizes Power Utilization for Faster Charging
LTC4055
Smart Battery Chargers
LT Magazine
Smart Battery Charger Is Programmed via the SMBus
LTC1759
DN342
Dual Smart Battery Charger Simplifies Battery Backup for Servers
LTC1760
DN277
Dual Battery Power Manager Increases Run Time by 12% and Cuts Charge Time in Half
LTC1960
DN1005
Smart Battery Charger Reduces Circuit Size
LTC4100
Power Path Controllers
LT Magazine
Low Voltage PowerPath Driver Switches from a 3.3V or 5V Supply to Battery Backup
LTC1473L
LT Magazine
Compact Solution Uses USB Power to Run a Device and Simultaneously Charge its Battery
LTC4410, LTC4053
DN1003
Ideal Diode/PowerPath Controller Eliminates Energy Wasting Diodes in Power OR-ing Applications
LTC4412
DN356
Dual Monolithic Ideal Diode Manages Multiple Power Inputs
LTC4413
Power Over Ethernet
DN361
Simple Battery Circuit Extends Power over Ethernet (PoE) Peak Current
LTC4055
, LTC, LT, and Over-The-Top are registered trademarks and PowerPath and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
© 2007 Linear Technology Corporation.
S A L ES OFFICES
North America
GREAT E R B AY A R E A
Bay Area
720 Sycamore Dr.
Milpitas, CA 95035
Phone: (408) 428-2050
FAX: (408) 432-6331
Sacramento
Phone: (408) 432-6326
PACIFI C N O RT H W E S T
Denver
Phone: (303) 926-0002
Portland
5005 SW Meadows Rd., Ste. 410
Lake Oswego, OR 97035
Phone: (503) 520-9930
FAX: (503) 520-9929
Salt Lake City
Phone: (801) 731-8008
Seattle
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Phone: (425) 748-5010
FAX: (425) 748-5009
SOUTH W E S T A R E A
Los Angeles
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Phone: (818) 703-0835
FAX: (818) 703-0517
Orange County
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Phone: (949) 453-4650
FAX: (949) 453-4765
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San Diego, CA 92122
Phone: (858) 638-7131
FAX: (858) 638-7231
CENTR A L A R E A
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Phone: (847) 925-0860
FAX: (847) 925-0878
Cleveland
7550 Lucerne Dr., Ste. 106
Middleburg Heights, OH 44130
Phone: (440) 239-0817
FAX: (440) 239-1466
Columbus
Phone: (614) 488-4466
Detroit
39111 West Six Mile Road
Livonia, MI 48152
Phone: (734) 779-1657
FAX: (734) 779-1658
Indiana
Phone: (317) 581-9055
Kansas
Phone: (913) 829-8844
Minneapolis
7805 Telegraph Rd., Ste. 225
Bloomington, MN 55438
Phone: (952) 903-0605
FAX: (952) 903-0640
Wisconsin
Phone: (262) 859-1900
N O RT H E A S T A R E A
Boston
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North Chelmsford, MA 01863
Phone: (978) 656-4750
FAX: (978) 656-4760
Connecticut
Phone: (860) 228-4104
Philadelphia
3220 Tillman Dr., Ste. 120
Bensalem, PA 19020
Phone: (215) 638-9667
FAX: (215) 638-9764
SOUTHEAST AREA
Atlanta
Phone: (770) 888-8137
Austin
8500 N. Mopac, Ste. 603
Austin, TX 78759
Phone: (512) 795-8000
FAX: (512) 795-0491
Dallas
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Dallas, TX 75248
Phone: (972) 733-3071
FAX: (972) 380-5138
Fort Lauderdale
Phone: (954) 473-1212
Houston
1080 W. Sam Houston Pkwy., Ste. 225
Houston, TX 77043
Phone: (713) 463-5001
FAX: (713) 463-5009
Huntsville
Phone: (256) 881-9850
Orlando
Phone: (407) 688-7616
Raleigh
15100 Weston Pkwy., Ste. 202
Cary, NC 27513
Phone: (919) 677-0066
FAX: (919) 678-0041
Tampa
Phone: (813) 634-9434
Asia
Europe
CHINA
FINLAND
Linear Technology Corp. Ltd.
Unit 2108, Metroplaza Tower 2
223 Hing Fong Road
Kwai Fong, N.T., Hong Kong
Phone: +852 2428-0303
FAX: +852 2348-0885
Linear Technology AB
Teknobulevardi 3-5
P.O. Box 35
FIN-01531 Vantaa
Finland
Phone: +358 (0)9 2517 8200
FAX: +358 (0)9 2517 8201
Linear Technology Corp. Ltd.
Room 902, Evergo Tower
1325 Huaihai M. Road
Shanghai, 200031, PRC
Phone: +86 (21) 6375-9478
FAX: +86 (21) 5465-5918
Linear Technology Corp. Ltd.
Room 511, 5th Floor
Beijing Canway Building
66 Nan Li Shi Lu
Beijing, 100045, PRC
Phone: +86 (10) 6801-1080
FAX: +86 (10) 6805-4030
Linear Technology Corp. Ltd.
Room 2604, 26/F
Excellence Times Square Building
4068 YiTian Road, Futian District
Shenzhen, 518048, PRC
Phone: +86 755-8236-6088
FAX: +86 755-8236-6008
JAPAN
Linear Technology KK
8F Shuwa Kioicho Park Bldg.
3-6 Kioicho Chiyoda-ku
Tokyo, 102-0094, Japan
Phone: +81 (3) 5226-7291
FAX: +81 (3) 5226-0268
Linear Technology KK
6F Kearny Place Honmachi Bldg.
1-6-13 Awaza, Nishi-ku
Osaka-shi, 550-0011, Japan
Phone: +81 (6) 6533-5880
FAX: +81 (6) 6543-2588
Linear Technology KK
7F, Sakuradori Ohtsu KT Bldg.
3-20-22 Marunouchi, Naka-ku Nagoya-shi,
460-0002, Japan
Phone: +81 (52) 955-0056
FAX: +81 (52) 955-0058
KOREA
Linear Technology Korea Co., Ltd.
Yundang Building, #1002
Samsung-Dong 144-23
Kangnam-Ku, Seoul
135-090 Korea
Phone: +82 (2) 792-1617
FAX: +82 (2) 792-1619
SINGAPORE
Linear Technology Pte. Ltd.
507 Yishun Industrial Park A
Singapore 768734
Phone: +65 6753-2692
FAX: +65 6752-0108
TAIWAN
Linear Technology Corporation
8F-1, 77, Nanking E. Rd., Sec. 3
Taipei, Taiwan
Phone: +886 (2) 2505-2622
FAX: +886 (2) 2516-0702
FRANCE
Linear Technology S.A.R.L.
Parc Tertiaire Silic
2 Rue de la Couture, BP10217
94518 Rungis Cedex
France
Phone: +33 (1) 56 70 19 90
FAX: +33 (1) 56 70 19 94
GERMANY
Linear Technology GmbH
Osterfeldstrasse 84, Haus C
D-85737 Ismaning
Germany
Phone: +49 (89) 962455-0
FAX: +49 (89) 963147
Linear Technology GmbH
Haselburger Damm 4
D-59387 Ascheberg
Germany
Phone: +49 (2593) 9516-0
FAX: +49 (2593) 951679
Linear Technology GmbH
Jesinger Strasse 65
D-73230 Kirchheim/Teck
Germany
Phone: +49 (0)7021 80770
FAX: +49 (0)7021 807720
ITALY
Linear Technology Italy Srl
Orione 3, C.D. Colleoni
Via Colleoni, 17
I-20041 Agrate Brianza (MI)
Italy
Phone: +39 039 596 5080
FAX: +39 039 596 5090
SWEDEN
Linear Technology AB
Electrum 204
Isafjordsgatan 22
SE-164 40 Kista
Sweden
Phone: +46 (8) 623 16 00
FAX: +46 (8) 623 16 50
UNITED KINGDOM
Linear Technology (UK) Ltd.
3 The Listons, Liston Road
Marlow, Buckinghamshire SL7 1FD
United Kingdom
Phone: +44 (1628) 477066
FAX: +44 (1628) 478153
Linear Technology Corporation
1630 McCarthy Blvd.
Milpitas, CA 95035-7417
Tel: 408-432-1900
www.linear.com
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