Version 1.1
LED
DRIVERS
LED Driver
Portfolio
Performance & Strategy
Where We Compete: Lighting Segments
Diodes…a proficient provider of LED drivers
for reliable, robust, cost-effective solutions
General Lighting
Signs and Display
High-efficiency and
simplicity are the
hallmarks of Diodes
Incorporated’s LED
driving solutions
Portable Lighting
Automotive
Signals
Their extensive versatility
make them suitable for
a wide range of
applications
General Lighting: Markets and Applications
Automotive
AL8400
ZXLD1370
ZXLD1374
ZXLD1374
ZXLD1366
AP8802H
Architectural
lighting
ZXLD
1362/6
MR16
ZXSC310
ZXLD132x
AP8800A
Flashlight/
solar lamps
ZXLD
1350/6
ZXLD1356
AP8801
AL9910
Offline
AL8400
ZXLD381/3
50
150 350
600
1A
AL8806
AL8805
Signs
AL8400
20
LED Current (mA)
2A
ZXLD1370
0.9
1.8
2.5
3.3
5
12
Voltage (V)
24
48
90
120
240
Medium Voltage DC-DC LED Drivers
Simple solutions for driving multiple 1-W and 3-W LEDs
in a variety of lighting applications
Equal ripple output current (Hysteretic)
 Very simple design – only 4 external components required
 Good stability – requires no external compensation
Operating voltage range from 6 ~ 60V
PWM and DC dimming
 Versatile dimming; DC for thermal and PWM for brightness control
ZXLD135x/6x in common
TSOT23-5footprint:
 High power density, small footprint solution
 1W LEDs: ZXLD135x
 3W LEDs: ZXLD136x
 AEC-Q100 qualified
AP/AL880x
family provides:
 Cost-effective solutions in
standard packages
(SO-8/EP, MSOP-8/EP, SOT25,
DFN3030-10)
Pa
ge
5
Medium Voltage LED Driver Selector
Part Number
Topologies
Minimum Input Maximum Input Maximum LED LED Current Dimming
Voltage V
Voltage V
Current A
Accuracy %
Switching
Frequency
(Max) kHz
Efficiency %
Operating
Sense Package Outlines
Temp. Range ºC Voltage
mV
AP8800
Buck
8
28
0.35
7
PWM/DC
600
92
-40 to +85
100
MSOP-8
SO-8
U-DFN3030-10
AP8800A
Buck
8
28
0.37
5
PWM/DC
600
92
-40 to +105
100
TSOT25
ZXLD1350
Buck
7
30
0.38
5
PWM/DC
1000
95
-40 to +105
100
TSOT25
ZXLD1352
Buck
7
30
0.38
5
PWM/DC
1000
97
-40 to +105
100
TSOT25
AP8803
Buck
8
30
1
8
PWM/DC
700
92
-40 to +105
100
TSOT25
ZXLD1360
Buck
7
30
1
5
PWM/DC
1000
95
-40 to +125
100
TSOT25
AL8805
Buck
6
30
1
5
PWM/DC
1000
98
-40 to +125
100
SOT25
AL8807
Buck
6
36
1.3, 1
5
PWM/DC
1000
98
-40 to +125
100
MSOP-8EP
SOT25
AL8806
Buck
6
36
1.5
5
PWM/DC
1000
98
-40 to +125
100
MSOP-8EP
AP8801
Buck
8
48
0.5
7
PWM/DC
500
92
-40 to +105
200
MSOP-8
SO-8
AP8802
Buck
8
48
1
8
PWM/DC
500
92
-40 to +105
200
SO-8
SO-8EP
U-DFN3030-10
ZXLD1356
Buck
6
60
0.55
3
PWM/DC
1000
97
-40 to +125
200
TSOT25
U-DFN3030-6
AP8802H
Buck
8
60
1
5
PWM/DC
500
92
-40 to +105
200
SO-8EP
ZXLD1362
Buck
6
60
1
5
PWM/DC
1000
95
-40 to +125
100
TSOT25
ZXLD1366
Buck
6
60
1
3
PWM/DC
500
95
-40 to +125
200
SO-8
TSOT25
U-DFN3030-6
ZXLD1374
Buck, Buck-Boost, Boost
6.5
60
1.5
2
PWM/DC
1000
97
-40 to +125
225
TSSOP-20EP
ZXLD1370
Buck, Buck-Boost, Boost
6.5
60
Ext MOSFET
2
PWM+DC
1000
97
-40 to +125
225
TSSOP-16EP
ZXLD1371
Buck, Buck-Boost, Boost
5.3
60
Ext MOSFET
2
PWM+DC
1000
97
-40 to +125
225
TSSOP-16EP
ZXLD1371Q
Buck, Buck-Boost, Boost
5.3
60
Ext MOSFET
2
PWM+DC
1000
97
-40 to +125
225
TSSOP-16EP
Low Voltage LED Drivers
Diodes low voltage LED drivers operate from rails
in the range from 0.8V to 20V
ZXSC310 – simple SOT25 PFM Boost controller
 Simple topology increases runtime in flashlights/portable lamps
ZXLD1321 – 1-cell high current Boost LED driver
 Compact solution for emergency lighting
 ZXLD1320 – 1.5A Buck
 ZXLD1322 – 0.7A Buck-boost
ZXLD383 – 1-cell LED driver
 Low-cost, reduced component
count solution for solar lamps
High Voltage Offline LED Drivers
AL9910x Key feature
 Higher input voltage range up to 500V – better transient rejection
 Low 0.5mA quiescent current – reduces internal power dissipation
 Also available in SO-8EP – reduces junction temperature rise
Typical applications
 Fluorescent tube (T8, T4) replacements, other retrofit lamps
 Street lights, baylights/Warehouse lights
 High-voltage DC (400V post PFC) LED driver
Linear LED Drivers
Diodes’ LED drivers provide small footprint solutions
DLD101 combines transistor and MOSFET to make LED driver
 100V Internal MOSFET - Drives long low current strings
AL58xx combines 2 transistors to make cost-effective LED driver
 Automatically lower LED current at higher temperatures
AL8400 is an LED driver-controller (external transistor to drive LED):
 200mV LED current sense voltage - Reduces power dissipation
 3% nominal LED current accuracy - Good brightness control
LED Drivers
Product
Spotlight
AL9910: Universal HV LED Driver-Controller
The AL9910 provides a simple, cost-effective solution for offline
and other high rail voltage LED lamps
The Diodes Advantage
 Exposed pad SO-8 and standard SO-8
SO-8EP reduces TJ Better reliability
 Over-temperature protection
 500V maximum input voltage
 Internal regulator with two output voltage variants
 No high PDIS start-up resistor required
Efficiency
Dimming
mA
A
%
kHz
%
PWM Lin
10
External
MOSFET
10
300
90
X
X
Supply
Current
Max
Switching
Frequency
500
V
7.5
10
Accuracy
V
Output
Current
V
15
20
VDD
Max Input
Voltage
AL9910
AL9910A
Min Input
Voltage
Part
LED
Current
mA
0.5
0.65
Temp
Range
Package
ºC
-40~+85
SO-8
SO-8EP
AP8800A: Improved Cost-Effective 1-W LED Driver
The AP8800A provides a simple, cost-effective solution for 12V lamps
The Diodes Advantage
 28V 350mA LED drive capability
 12VAC/DC Lighting using 1-W LEDs
 5% initial average LED current accuracy
 Simple PWM and DC dimming on CTRL pin
DC  thermal, PWM brightness control
 Small footprint TSOT23-5 package with only 4
external components
Accuracy
Max
Switching
Frequency
Efficiency
Sense
Voltage
AP8800A
Max
Input
Voltage
LED
Current
Part
Min
Input
Voltage
Temp
Range
V
V
A
%
kHz
%
PWM
Lin
mV
ºC
8
28
370
5
600
90
X
X
100
-40~+105
Dimming
Package
TSOT23-5
AL8805: 30V, 1A LED Driver
The AL8805 provides a simple, cost-effective solution for 12VAC/DC
LED lamps using multiple 1W and 3W LEDs
The Diodes Advantage
 30V 1A LED drive capability
 12VAC/DC and 24VDC Lighting using 3-W LEDs
 Small footprint SOT25 package
 5% initial average LED current accuracy
 Simple PWM and DC dimming on CTRL pin
DC  thermal, PWM brightness control
 High switching frequency up to 1MHz
Max
Input
Voltage
LED
Current
Accuracy
Max
Switching
Frequency
Efficiency
AL8805
V
6
V
30
A
1
%
5
kHz
1000
%
96
Dimming
PWM
X
Lin
X
Sense
Voltage
Part
Min
Input
Voltage
Temp
Range
Package
mV
100
ºC
-40~+125
SOT25
AL8806: Simple, 1.5A Cost-Effective LED Driver
The AL8806 provides a simple, cost-effective solution for
general illumination LED lamps using high-power LEDs
The Diodes Advantage
 30V 1.5A LED drive capability
 12VAC/DC and 24VDC Lighting using 7-W LEDs
 Small footprint MSOP-8EP package
Lower JC Lower TJ  Better reliability
 5% initial average LED current accuracy
 Simple PWM and DC dimming on CTRL pin
Max
Input
Voltage
LED
Current
Accuracy
Max
Switching
Frequency
Efficiency
AL8806
V
6
V
30
A
1.5A
%
5
kHz
1000
%
96
Dimming
PWM
X
Lin
X
Sense
Voltage
Part
Min
Input
Voltage
Temp Range
mV
100
ºC
-40~+125
Package
MSOP-8EP
AL8807: Improved EMI 30V, 1A LED Driver
The AL8807provides a simple, cost-effective solution for 12VAC/DC
LED lamps using multiple 1W and 3W LEDs
The Diodes Advantage
 30V 1A LED drive capability
Drives 1-W and 3W LED from 12V and 24VDC rails
 Small footprint SOT25 package
Same footprint as ZXLD1360
 Controlled edge speeds
Improves EMI; Easier PCB layout
 5% initial average LED current accuracy
Max
Input
Voltage
LED
Current
Accuracy
Max
Switching
Frequency
Efficiency
AL8807
V
6
V
30
A
1
%
5
kHz
1000
%
96
Dimming
PWM
X
Lin
X
Sense
Voltage
Part
Min
Input
Voltage
Temp
Range
Package
mV
100
ºC
-40~+125
SOT25
AP8802H:60V LED Driver with 5% Accuracy
The AP8802H provides a simple, cost-effective solution for general
illumination LED lamps using multiple 3W LEDs
The Diodes Advantage
 Operating voltage range from 8 to 60V
24VAC/DC and 48V rails  Brighter lamps
 LED current up to 1A
 5% initial average LED current accuracy
 PWM and DC dimming using only one pin
DC  thermal, PWM brightness control
 Up to 500kHz switching frequency
Part
Min
Input
Voltage
Max
Input
Voltage
LED
Current
Accuracy
Max
Switching
Frequency
Efficiency
AP8802H
V
8
V
60
A
1
%
5
kHz
500
%
92
Dimming
PWM
X
Lin
X
Sense
Voltage
Temp
Range
Package
mV
200
ºC
-40~+105
SO-8EP
ZXLD1370/4: Multitopology LED Drivers
Versatile LED driver increases reliability of high-brightness lamps
The Diodes Advantage
 High-accuracy LED control: 1% reference tolerance
Better brightness control and matching between lamps
 Multitopology device using 1 sense resistor
Suitable for buck, boost and buck-boost lighting apps
 LED current thermal management
Reduces ILED at high temp  Improves reliability
 Two-pin diagnostic feedback pins
kHz
1000
1000
%
95
95
Standby
Current
%
2
2
Sense
Voltage
A
MOS
1.5
Efficiency
V
60
60
Switching
Freq (Max)
V
60
60
LED
Current
Accuracy
V
6.5
6.5
Max LED
Current
Max
Output
Voltage
Max Input
Voltage
ZXLD1370
ZXLD1374
Min Input
Voltage
Part
°C
mV
-40 ~ +125 225
-40 ~ +125 225
µA
160
160
Temp
Range
Package
TSSOP-16-EP
TSSOP-20-EP
ZXSC310: Low Voltage Boost LED Driver-Controller
Simple, small and low-cost boost controller operating down to 0.8V
The Diodes Advantage
 0.8V to 8V input voltage



Works with 1+ AA cells
Peak switch current control of ILED
LED current reduces as VIN reduces  Longer
run times
Simple, flexible low-part count circuit
Small size: SOT23-5
Max LED
Current
LED
Current
Accuracy
Switching
Freq
(Max)
Efficiency
V
8
V
BJT
A
BJT
%
-
kHz
200
%
85
°C
-40 ~ +85
Standby
Current
Max
Output
Voltage
V
0.8
Sense
Voltage
Max Input
Voltage
ZXSC310
Min Input
Voltage
Part
Temp
Range
mV
19
µA
5
Package
SOT25
ZXLD132x: Low-Voltage LED drivers
Simple, versatile, high-efficiency, high-power LED drivers operating
down to 1V
The Diodes Advantage
 2A switch-current exposed pad DFN
 Wide input voltage
Works from multiple AA cells and Li-Ion cells
 High efficiency
 LED current thermal management
Increases reliability of LEDs at high temp
Part
Topology
VIN
V
ZXLD1320
Buck
4~18
ZXLD1321
Boost
1~12
ZXLD1322 Buck-boost 2.5~15
VOUT ILED fSW Accuracy VMON Efficiency
V
VIN
18
18
A
1.5
1
0.7
kHz
600
600
600
%
3
3
3
mV
100
100
100
%
95
85
85
TA
Package
ºC
-40~125 DFN4030-14
-40~125 DFN4030-14
-40~125 DFN4030-14
AL5728: High-Efficiency Boost LED Driver
AL5728 provides a high-efficiency, cost-effective solution for LCD backlighting
The Diodes Advantage
 1.8 ~ 5.5V Input range
Works from 2 AA cells and Li-Ion cell
 Low RDS(ON)
Increases efficiency
 36V OVP rating
Drives Longer LED chains
 PWM and DC dimming
 -40ºC to +125ºC temperature range
Max
Output
Voltage
LED
Current
Frequency
Efficiency
AL5728
Max
Supply
Voltage
Accuracy
Part
Min
Supply
Voltage
V
V
V
mA
%
kHz
%
1.8
5.5
36
30
10
1200
90
Expected 2Q2012 Release
Dimming
Temp Range
Package
ºC
PWM/DC
-40~+125
TSOT23-6
DFN2020-6
ZXLD38x: Low-Power LED Driver
Simple boost and buck-boost LED driver solution requiring
only “1” external component plus LEDs
The Diodes Advantage
 Single cell operation (0.9V minimum)
Operates from 1NiMH/NiCd cell
 85% Efficiency
 Simple flexible LED driving
 Low VCE(SAT) switching transistor
 Dual function enable input (ZXLD383)
Prevents solar cell discharging rechargeable cell
during darkness
Part
Topology
VIN
VOUT
ILED
fSW
Package
ZXLD381
Boost driver
0.9 ~ 2.2V
20V
320mA
350kHz
SOT23
ZXLD383
Boost driver
0.9 ~ 3.3V
20V
50mA
330kHz
TSOT23-5
AL5811: Simple Linear LED Driver
AL5811 provides a simple, cost-effective solution for low-current LED lamps
Vcc
The Diodes Advantage
 Small footprint high PDIS MSOP-8EP
 High-value current setting resistor RSET
Lower cost small footprint resistors
Vcc
 3% initial average LED current accuracy
LED
AL5811
 0.8 ~ 60V output voltage range
Drives up to 16LED
CIN
0.1μF
RSET
GND
10k
 -40ºC to +125ºC temperature range
LED
Current
Efficiency
V
V
V
mA
%
kHz
%
3.5
60
60
75
3
-
-
Expected 1Q12 Release
Dimming
Max
Output
Voltage
Frequency
AL5811
Max
Supply
Voltage
Accuracy
Part
Min
Supply
Voltage
Temp Range
Package
ºC
-
-40~+125
MSOP-8EP
U-DFN3030-6
AL5812: Simple Linear LED Driver
AL5812 provides a simple, cost-effective solution for low-current LED lamps
The Diodes Advantage
 Small footprint high PDIS MSOP-8EP
 High-value current setting resistor RSET
Lower cost small footprint resistors
 3% initial average LED current accuracy
 1.0 ~ 60V output voltage range
Drives up to 16LED
 -40ºC to +125ºC temperature range
LED
Current
Efficiency
V
V
V
mA
%
kHz
%
3.5
60
60
150
3
-
-
Expected 1Q12 Release
Dimming
Max
Output
Voltage
Frequency
AL5812
Max
Supply
Voltage
Accuracy
Part
Min
Supply
Voltage
Temp Range
Package
ºC
-
-40~+125
MSOP-8EP
U-DFN3030-6
AL8400: Simple Linear LED Driver-Controller
AL8400 provides a simple, cost-effective solution for LED lamps/signs
The Diodes Advantage
VCC
 Small footprint SOT353 package
 200mV sense voltage
more LED driven off any rail and reduces PDIS
 3% initial average LED current accuracy
 Open-collector output drives
transistor/MOSFET
LED chain voltage and current set by external
transistor/MOSFET
OUT
+
VREF
0.2V
Efficiency
mA
%
kHz
%
2.2
18
18
15
Set by ext. transistor
3
-
-
Dimming
Frequency
mA
LED
Current
Q2
E1
CL
RSET
0V
V
Supply
Voltage
Max
Output
Output
Current
Voltage
Q1
FB
GND
V
Max
VCC
CD
Accuracy
AL8400
AL8400
V
Min
Part
RB
Temp
Range
Package
ºC
-
-40~125
SOT353
AL8400: Versatile LED Driver-Controller
Drives both MOSFETs and Bipolar transistors (BJT)
VCC
Vcc
RB
RB
AL8400
3
Vcc
VCC
OUT
OUT 5
CD
CD
VREF
0.2V
+
Q1
Q2
Smaller
CL
E1
FB
“overhead”
FB
GND
AL8400
Q2
RSET
GND
0V
GND
2
E1
1
ILED = VREF/RSET
LED Current
MOSFET
Bipolar Transistor
150mA
ZXMN6A11Z
SOT89
FCX493
SOT89
350mA
DMN6068SE
SOT223
DNLS320E
SOT223
700mA
DMN6068LK3
DPAK
DXT690BP5
PowerDI®5
PowerDI is a registered trademark of Diodes Incorporated
4
CL
RSET
AL8400: Versatile LED Driver-Controller
Driving longer LED strings
The Diodes Advantage
VIN
 The MOSFET/Bipolar transistor
determines how long the LED string
can be and also the LED current
 Longer LED strings > VCC
can be driven by:
 Powering the AL8400 from a
separate power supply
or
 Using a simple Zener diode to
clamp the AL8400’s VCC
R1
VCC
AL8400
RB
VCC
OUT
CD
Z1
VREF
0.2V
+
Q1
Q2
FB
GND
0V
E1
CL
RSET
LED Driver
Applications
Application Matrix of General LED Drivers
Part #
ZXLD
136x/5x
AP880x
AL880x
MR16
X
X
E 27, E40
X
X
X
T8 , T12
X
X
X
Apps
Residential
ZXLD132x
ZXLD1370/4
X
AL9910x
X
X
Commercial
X
X
X
X
X
Industrial
X
X
X
X
X
Automotive
X
Outdoors
X
X
Emergency
X
X
RGB LEDs
X
X
Wall Washer
X
X
OLED lamp
X
X
Signage
AL8400
X
X
X
X
X
X
X
X
X
Applications
MR16 LED Lamps
Requirements
 High-reliability, long life solution
 Small footprint solution
 Ability to drive up to 7W LED power
Three 1W LED
One 3W LED
One Multi-Die 7W LED
Diodes Advantage
 ZXLD1360 SOT25 footprint
 >90% efficiency driving 3W LEDs


 reduced temperature rise
RDS(ON)< 0.25  increased efficiency
Small footprint, cost-effective, simple,
reliable solution for MR16
Key Products
AL8805
AL8806
AP8800A
DFLS240L D1
DFLS240L D1/2/3/4
Applications
E27/A19 Retrofit LED Lamps
Requirements




Small footprint
High-power factor
High reliability
Cost-effective solution
Diodes Advantage
 Integrated high voltage regulator



 removes high power start-up resistor
Uses LD pin to increase Power Factor
 reduces size of bulk capacitor
Exposed pad SO-8 reduces junction
temperature  better reliability
500V maximum input voltage improves
robustness from transients at 277VAC
Key Products
AL9910
U1
AL9910A
U1
HD02-T
D1/2/3
MUR160G D6
Applications
Fluorescent Tube (T8/T10/T12) Replacement
Requirements





High efficiency
Long life
Wide input voltage range up to 277VAC
High power factor
Drive long chains of low
~ medium power LEDs
Diodes Advantage
 Integrated high voltage, low quiescent



current regulator  better efficiency
Exposed pad SO-8 reduces TJ
 better reliability
500V maximum input voltage improves
robustness from transients at 277VAC
Drives external-power MOSFET,
which determines number and
type of LEDs
Key Products
AL9910
U1
AL9910A
U1
DF06S
DB1
S1M-13-F
D1/2/3
SF30JG-B
D4
Applications
LED Street Lights
Requirements





High reliability, long life
High efficiency
Cost-effective solutions
Operation from Safe Low voltage rails
(SELV) driving long LED chains
Modular LED approach of multiple
serial channels of LEDs in parallel
Diodes Advantage






60V input voltage  48V rails
>90% efficiency driving 14 LEDs
Small value capacitors < 10µF
Simple solutions
Flexible dimming (DC and PWM)
High accuracy:
 ZXLD1366 2.5% accuracy
 AP8802H 5% accuracy
Key Products
ZXLD1366
ZXLD1362
ZXLD1356
AP8802H
Applications
Refrigeration and Appliance LED Lighting
Requirements






Provide uniform illumination
Can operate safely from low voltages
No low temp start-up/flicker issues
Dimmable
High efficiency
High reliability
Diodes Advantage





60V input voltage  48V rails
30V input voltage  24V rails
>90% efficiency driving >7 LEDs
Small value capacitors < 10µF
 better reliability
Flexible dimming (DC and PWM)
Key Products
ZXLD1356
AP8802H
AP8801
AP8805
DFLS240L
D1
Applications
LED Wall Washers
Requirements
 Drive long chains of low-current,


high-brightness LEDs in series
Simple brightness adjustment
Boost LED driver
Diodes Advantage
 ZXLD1370 Boost LED

driver-controller
 External FET determines LED
chain length  increased versatility
Simple, cost-effective Diodes’
solution to wall washers
Key Products
ZXLD1370
ZXMN10A09
B1100
M1
D1
Applications
LED Signs
Requirements
 Improved reliability and life



compared to neon letters
Improved efficiency
Long serial chains of low-current
LEDs
Cost-effective solutions
Diodes Advantage
Drive
overhead
Z1
 Simple, versatile solution
 External transistor determines


LED chain length
200mV LED current-sense voltage
 reduces minimum drive overheads
3% LED current-sense tolerance
 improves LED current accuracy
Key Products
AL8400
ZVN2120G
M1
FCX493 (BJT) M1
DDZ9702T
Z1
Applications
LED Emergency Lighting
Requirements
4 LEDs in a single 350mA LED string from 2 cells
 Constant LED brightness
 High-efficiency Boost LED driver
 Long run times from rechargeable


batteries
Operation from 1~2 cells
Drive 2~4 LEDs in series
Diodes Advantage
 2A switch current boost LED driver


 drives up to 1A LED current over
input voltage range
 drives 1W and 3W LED
12V ~ 0.9V input voltage
 Operates from1~ 8 cells
High 85% efficiency (0.35<ILED<1A)
 Increases run time
Key Products
ZXLD1321
ZXSC400
ZHCS2000
D1
1SMB5931B
Z1
Applications
LED Flashlights
Requirements





One 3-W LED from 2 Cells
Simple, low-cost solution
Long running time
Operates from one and two cells
Drives one 3-W LED
Boost LED driver
Diodes Advantage
 0.9V ~ 8V input voltage


 Supports one cell operation
Boost controller uses peak current
- switching topology
 automatically reduces average
LED current as battery voltage
reduces  increases run time
With Zetex BJT drives one 3-W LED
Key Products
ZXSc310
ZXLD1321
ZXTN25012EFH
Q1
ZLLS2000
D1
Applications
Simple LED Solar Exterior Lights
Requirements
 Solution cost
 Long run-time
Diodes Advantage
 0.9V minimum input voltage



 extends run time
85% efficiency  extends run time
Automatic daylight charge detect
Simple small footprint solution
 requires only LED, inductor and
solar cell  eliminates one diode
Key Products
ZXLD383
ZXLD381
Automotive LED Lighting Applications
 Brake lights
 Position lamps:
 Tail light
 Parking/side lights
 Head lights:
 Main beam
 Low beam





Daytime running lights
Fog lamps
License plates
Auxiliary lighting
Interior illumination
All pictures copyright acknowledged
Applications
Automotive Applications 1: Door Lighting
Requirements





9~16V typical input voltage range
High efficiency drive of 1 LED in series
Wide temperature range >+85ºC
Withstand load dump
Meet AEC-Q100 automotive quality
requirements
Diodes Advantage
 6~60V input range  supports normal




battery range and load dumps
1A switch  Drives 0.5,1 and 3W LEDs
Qualified to AEC-Q100 grade 1
Ambient temperature range
up to +125ºC
High accuracy
 ZXLD1356/66: 2.5%
 ZXLD1362: 5%
Key Products
ZXLD1362
ZXLD1356
ZXLD1366
PDS3S140
D1
Applications
Automotive Applications 2: Daylight Running Lamps
Requirements
 Operate over whole battery




(9~16V) voltage range
High efficiency drive of LEDs
Wide temperature range >+100ºC
Withstand load dump
Meet AEC-Q100 automotive
quality requirements
Diodes Advantage
 Multitopology LED drivers  Buck-boost




mode works over VBATT range
driving LED chain used in DRL
2% accuracy  better matching
between DRL pair
Qualified to AEC-Q100 grade 1
Ambient temperature range
up to +125ºC
LED Thermal protection loop
Key Products
ZXLD1374
ZXLD1370
DMN6068LK3
MOSFET
PDS3S140
PDS3200
D1
LED Driver
Support
Tools
42
LED Driver Calculators
 A simple and convenient way to explore the operation of our LED drivers
http://www.diodes.com/destools/calculators.html
 The following devices have calculators on the web:
 DC-DC: AL8805, AP880x family, ZXLD132x family, ZXLD135x/6x family, ZXLD1370, ZXLD1374
 Offline: AL9910 – (shown below)
4. Output Data
Application and Design Notes
http://www.diodes.com/destools/appnote.html#4
AN44
Application note for the ZXSC300/ZXSC310 high power LED drivers - for low voltage halogen replacement.
AN47
Getting more out of the ZXLD1350 - dimming techniques
AN48
Getting more out of the ZXLD1350 - high output current
AN50
Feed forward compensation for ZXSC300 LED driver
AN56
12Vac LED Driving without smoothing capacitors
AN57
Automotive EMC considerations for switching regulator LED lighting applications using ZXLD1362
AN64
Common anode topology with Zetex hysteretic converters
AN65
Using the ZXSC310 to drive high power LEDs from 2 alkaline cell with hysteretic UVLO
AN74
Solar Street Lighting application with ZXLD1374
AN75
High Power Factor LED Replacement T8 Fluorescent Tube using the AL9910 High Voltage LED Controller
ANL001
High Voltage Implementation of AP3156 for Backlighting LED Driver Applications
http://www.diodes.com/destools/design_notes.html#4
DN61
ZXSC310 solution for a 1W high power white LED.
DN78
ZXSC310 with reverse polarity protection.
DN62
ZXSC310 solution to drive 3 LEDs connected in series.
DN79
ZXSC400 1W LED driver.
DN63
ZXSC310 solution to drive 8 LEDs connected in series.
DN81
Lighting design note handbook
DN64
ZXSC310 solution flashlight.
DN84
ZXSC400 driving 3W high power LEDs
DN65
ZXSC310 solution for emergency light.
DN85
ZXSC400 1W/3W buck LED drivers
DN67
ZXSC400 solution for 1W high powered LED.
DN86
Reduced component count and compact reference design for MR16
replacement lamps using multiple 1W LEDs
DN68
ZXSC310 high power torch reference design.
DN89
MR16 EMC compliant reference design
DN69
ZXSC310 garden light reference design.
DN92
ZXLD1360 and Super Barrier Rectifier ideally suited for 700mA LED current in MR16 application
DN70
ZXSC400 driving 2 serial high power LEDs.
DN93
Wide input voltage range SEPIC LED driver using ZXLD1321 with external power switch
DN71
DN73
ZXSC400 solution for 5W high powered LED.
ZXSC300 step down converter for 3W LED.
DN95
DN96
2.8A high current LED driving using ZXLD1320 with external power switch
MR11 LED lighting application with AL8805
DN75
ZXSC310 solar powered garden light reference design.
DN98
ZXLD1370 PCB layout guidelines
LED Driver Evaluation Boards
Device
Board Order Number
Description of Assembly
Package Used
AL8400
AL8805
AL8805
AL8806
AL8806
AL9910
AL9910
AL9910
AP8800
AP8801
AP8802
AP8802H
DLD101
ZXLD1320
ZXLD1321
ZXLD1322
ZXLD1350
ZXLD1350
ZXLD1350
ZXLD1352
ZXLD1360
ZXLD1366
ZXLD1366
ZXLD1370
ZXLD1370
ZXLD1374
ZXLD1374
ZXLD381
ZXLD383
ZXSC310
ZXSC380
ZXSC400
AL8400EV1
AL8805EV1
AL8805EV2
AL8806EV4
AL8806EV6
General purpose Linear LED driver board
30V, 1A LED Driver, Buck,660 mA, control input, no onboard LEDs.
MR16 Replacement, external 3W LED, Vin=12Vrms 50/60 Hz AC or 12VDC 660 mA
30V, 1.5A LED Driver, Buck, 1.1A, control input, no onboard LEDs.
MR16 LED replacement Vin=12Vrms 50/60 Hz AC or 12VDC Buck, 1.1A,
AL9910EV4
AL9910EV5
AL9910EV6
AP8800EV2
AP8801EV2
AP8802EV2
AP8802HEV2
DLD101EV1
ZXLD1320EV1
ZXLD1321EV1
ZXLD1322EV1
ZXLD1350EV3
ZXLD1350EV4
ZXLD1350EV7
ZXLD1352EV1
ZXLD1360EV11
ZXLD1366EV2
ZXLD1366EV3
ZXLD1370EV1
ZXLD1370EV2
ZXLD1374EV1
ZXLD1374EV2
ZXLD381EV1
ZXLD383EV1
ZXSC310EV(1)
ZXSC380EV1
ZXSC400EV1
Universal input 180mA LED current LED driver
Universal input 240mA LED current LED driver
Isolated Offline LED driver
LED Driver, Buck, Vin=8V to 28V, 300 mA, control input, no onboard LEDs.
LED Driver, Buck, Vin=8V to 45V, 460 mA, control input, no onboard LEDs.
LED Driver, Buck, Vin=8V to 45V, 1A, control input, no onboard LEDs.
LED Driver, Buck, Vin=8V to 60V, 1A, control input, no onboard LEDs.
SOT353
SOT23-5
SOT23-5
MSOP-8EP
MSOP-8EP
SO-8
SO-8
SO-8
MSOP-8
MSOP-8
SO-8EP
SO-8EP
DFN3030DDFN4030-14
DFN4030-14
DFN4030-14
TSOT23-5
TSOT23-5
TSOT23-5
TSOT23-5
SOT23-5
DFN3030-6
SO-8EP
TSSOP-16EP
TSSOP-16EP
TSSOP-20EP
TSSOP-20EP
SOT23
SOT23-5
SOT23-5
SOT23-5
SOT23-6
Buck LED Driver, 500kHz PFM, Vin = 5 to 18V, 1.5A output, + External Thermistor
Boost LED Driver, 550 kHz PFM, Vin=1.2 to 12V, 1A output, + External Thermistor
Buck-boost LED Driver, 550 kHz PFM, Vin=2.5 to 15V, 0.7A output, + Ext Thermistor
Buck LED Driver, Vin=12V to 30V, 3 Cree LEDs at 300 mA, + Adjust input
Buck LED Driver, Vin=12V to 30V, 3 Osram LEDs at 300 mA, + Adjust input
Buck LED Driver, Vin=12 to 30V, 3 Lumiled LEDs at 300 mA + Adjust input.
Buck LED Driver Vin=12 to 30V, miniature PCB at 300 mA, + Adjust input.
MR16 Replacement, external 3W LED, Vin=12Vrms AC or 12VDC nominal, 660 mA
LED driver, Buck, Vin=7 to 60V, external LED, 1A output Aluminium PCB
LED driver, Buck, Vin=6 to 47V, external LED, 1A output FR4 PCB
Buck LED driver controller , Vin=6.5 to 47V, FR4 PCB Flag, status outputs.
Buck-boost and Boost LED driver controller, Vin=6.5 to 47V Flag, status outputs.
Buck LED driver, Vin=6 to 47V, 1.5A output FR4 PCB, Flag, status outputs.
Buck-boost and Boost LED driver, , Vin=6 to 47V, 350mA output. Flag, status outputs.
Single or multicell boost LED driver, Vin=0.9Vmin.
Boost LED driver for garden lights Vin=0.9Vmin. Solar cell connection.
Boost LED driver, Vin=3.3 to 5V, 4 white LEDs
Boost LED driver, Vin=1V to 3V (single cell), white LED at 18mA, rectangular board
LED driver, Boost, Vin=2.5 to 4.2V, 3 LEDs Nichia NSCW215, at 20mA
LED Driver
Product
Selector
Supplement
Low-Voltage General Lighting LED Drivers
Diodes Low-Voltage LED Drivers Operate from 0.8V to 20V
Part
Topology
VIN (V)
VOUT (V)
ILED
Package
ZXSC300
Boost controller
0.8 ~ 8
Ext sw
Ext sw
SOT23-5
ZXSC310
Boost controller
0.8 ~ 8
Ext sw
Ext sw
SOT23-5
ZXSC400
Boost controller
1.8 ~ 8
Ext sw
Ext sw
SOT23-6
ZXLD1320
Buck driver
4 ~ 18
20
1.5A
DFN4030-14
ZXLD1321
Boost driver
1.2 ~ 12
18
1A
DFN4030-14
ZXLD1322
Buck-Boost driver
2.5 ~ 15
18
0.7A
DFN4030-14
ZXLD381
Boost driver
0.9 ~ 2.2
20
50mA
SOT23
ZXLD383
Boost driver
0.9 ~ 2.2
20
50mA
TSOT23-5
ZXSC380
Boost driver
0.8 ~ 6
20
80mA
SOT23
380/1/3
300/310/400
1320/1/2
1320/1/2
LCD Backlighting Charge Pump LED Drivers
2.7
5.5
-
AL3158
2.7
5.5
AL3159
2.7
AL3157
2.7
%
mA
µA

4
20
0.6/1.2/1
88
.8
1.2
1
-
SDI
Y
6
25
0.5/1.0/2
88
.0
1.5
1
-
SDI
-
9
30
1.2
93
1
0.5
5.5
-
9
30
1.2
93
1
5.5
-
4
210
1.2
93
1
2
Protection
MHZ
Dimming
mA
LDOs
AP3156
SW RDS(ON)
-
Standby
Current
5.5
Quiescent
Current
2.7
Efficiency
AP3154A
Frequency
Max Output
Voltage
V
Max LED
Current
Max Input
Voltage
V
# LED Channel
Min Input
Voltage
V
Part
VFB
Temp
Range
Package
V
ºC
N
-
-40 ~
+85
QFN3030-12
Y
N
-
-40 ~
+85
QFN4040-16
PWM
Y
N
-
-40 ~
+85
QFN3030-20
0.5
PWM
Y
N
-
-40 ~
+85
QFN3030-20
0.5
PWM
Y
N
-
-40 ~
+85
DFN3030-12
LCD Backlighting Boost LED Drivers

Soft Start
µA
OVP
SW RDS(ON)
mA
Dimming
Standby Current
MHz %
Quiescent Current
mA
Efficiency
V
Frequency
V
IPEAK Current
Max Output Voltage
V
# LED Channel
Max Input Voltage
Type
Min Input Voltage
Part
VFB
Temp
Range
Package
V
ºC
DFN2020C-6
SOT26
TSOT23-6
AP5724
Boost
(PWM)
2.7
5.5
26
1
750
1.4 84
0.5
1
0.95 PWM Y
Y
0.1
-40 ~
+85
AP5725
Boost
(PWM)
2.7
5.5
26
1
750
1.4 84
0.5
1
0.95 PWM Y
Y
0.25
-40 ~
+85
DFN2020C-6
SOT26
TSOT23-6
AP5726
Boost
(PWM)
2.7
5.5
26
1
750
1.4 84
0.5
1
0.95 PWM Y
Y
0.31
-40 ~
+85
DFN2020C-6
SOT26
TSOT23-6
AL5728
Boost
(PWM)
1.8
5.5
40
1
1500
1.2 90 0.06
1
0.3
Y
0.1
-40 ~
+85
TSOT23-6
DFN2020C-6
PWM Y
OLED and LCD Bias Drivers
µA

0.1
ZXLD1615
Boost
(PFM)
2.5
5.5
28
1
320
1
AP5727
Boost
(PWM)
2.7
5.5
30
1
750
1.2
85 0.06
84
0.5
1
Soft Start
OVP
SW RDS(ON)
mA MHz % mA
Dimming
Standby Current
Quiescent Current
V
Efficiency
V
Frequency
V
IPEAK Current
Type
# Output
Max Output
Voltage
Max Input
Voltage
Min Input
Voltage
Part
VFB
Temp
Range Package
V
ºC
1.0
-40 ~
+85
TSOT23-5
0.95 PWM Y Y 1.25
-40 ~
+85
SOT25
1.75 PWM N N
Linear LED Driver Overview
mA
mA
%
kHz
%
-
-
-
-40~+125
SOT353
Dimming
V
Efficiency
Supply
Voltage
V
V
LED
Current
Frequency
Topology
Max
VOUT
Accuracy
Part
Max
Output
Current
Min
Temp
Range
Package
ºC
AL8400
Controller
2.2
18
18
15
Set by
external
transistor
3
DLD101
Driver
-
100
2
1000
1000
-
0.85
-
-
-40 ~+85
DFN3030D-8
AL5801
Driver
4.5
100
2
1000
1000
-
0.85
-
-
-40 ~+85
SOT26
AL5802
Driver
4.5
30
30
650
120
-
-
-
PWM -40~+125
SOT26
AL5811
Driver
2.5
60
60
75
75
3
-
-
-
AL5812
Driver
2.5
60
60
150
150
3
-
-
-
AL5811/2 expected 1Q2012
-40~+125
MSOP-8EP
-40~+125 U-DFN3030-6
Summary of AECQ-Approved LED Drivers
LED Current
Accuracy
Max Switching
Frequency
Efficiency
V
V
V
A
%
kHz
%
°C
-40 ~ +125
Min Max
Standby Current
Typ Peak LED
Current
Temp
Range
Quiescent
Current
Max Output
Voltage
Buck-boost
Boost
Level
Buck
Part
Input
Voltage
mA
µA
AL8400QSE-7
Grade 1
X
2
18
18
Ext
3
-
-
ZXLD1350ET5TA
Grade 2
X
7
30
30
0.35
5
1000
95
-40 ~ +105 0.25 15
TSOT23-5
ZXLD1352ET5TA
Grade 2
X
7
30
30
0.35
5
1000
97
-40 ~ +105 0.25 20
TSOT23-5
ZXLD1356ET5TA
Grade 1
X
6
60
60
0.55
3
1000
97
-40 ~ +125
1.6
65
TSOT23-5
ZXLD1360ET5TA
Grade 1
X
7
30
30
1
5
1000
95
-40 ~ +125
1.8
20
TSOT23-5
ZXLD1362ET5TA
Grade 1
X
6
60
60
1
5
1000
95
-40 ~ +125
1.8
65
TSOT23-5
ZXLD1366EN8TC
Grade 1
X
6
60
60
1
2.5
500
95
-40 ~ +125
1.6
65
SO-8-EP
ZXLD1366ET5TA
Grade 1
X
6
60
60
1
2.5
500
95
-40 ~ +125
1.6
65
TSOT23-5
ZXLD1370EST16TC Grade 1
X
X
X
6.5
60 Ext. MOS Ext. MOS
2
1000
95
-40 ~ +125 1.65 91 TSSOP-16EP
ZXLD1374EST20TC Grade 1
X
X
X
6.5
60
2
1000
95
-40 ~ +125 1.65 91 TSSOP-20EP
60
1.5
Applications include: daylight running lights, interior lights, brake lights, door safety lights, etc.
-
Package
SOT353
Version 1.1
LED
DRIVERS