13-1395; Rev 1; 4/99
Low-Cost, Low-Power, Low-Dropout,
SOT23-3 Voltage References
Features
The MAX6001–MAX6005 family of SOT23, low-cost
series voltage references meets the cost advantage of
shunt references and offers the power-saving advantage
of series references, which traditionally cost more. Unlike
conventional shunt-mode (two-terminal) references that
must be biased at the load current and require an external resistor, these devices eliminate the need for an
external resistor and offer a supply current that is virtually
independent of the supply voltage.
♦ 1% max Initial Accuracy
These micropower, low-dropout, low-cost devices are
ideal for high-volume, cost-sensitive 3V and 5V batteryoperated systems with wide variations in supply voltage
that require very low power dissipation. Additionally,
these devices are internally compensated and do not
require an external compensation capacitor, saving
valuable board area in space-critical applications.
♦ 0.12µV/µA Load Regulation
♦ 100ppm/°C max Temperature Coefficient
♦ 45µA max Quiescent Supply Current
♦ 0.8µA/V Supply Current Variation with VIN
♦ ±400µA Output Source and Sink Current
♦ 100mV Dropout at 400µA Load Current
♦ 8µV/V Line Regulation
♦ Stable with CLOAD = 0 to 2.2nF
Applications
Ordering Information
Portable/Battery-Powered Equipment
Notebook Computers
TEMP. RANGE
PINSOT
PACKAGE TOP MARK
MAX6001EUR-T
MAX6002EUR-T
MAX6003EUR-T
MAX6004EUR-T
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
3 SOT23-3
3 SOT23-3
3 SOT23-3
3 SOT23-3
FZCW
FZCX
FZDK
FZCY
MAX6005EUR-T
-40°C to +85°C
3 SOT23-3
FZCZ
PART
PDAs, GPSs, and DMMs
Cellular Phones
Pagers
Hard-Disk Drives
Selector Guide
PART
OUTPUT
VOLTAGE (V)
MAX6001
1.250
2.5 to 12.6
MAX6002
2.500
(VOUT + 200mV) to 12.6
MAX6003
3.000
(VOUT + 200mV) to 12.6
MAX6004
4.096
(VOUT + 200mV) to 12.6
MAX6005
5.000
(VOUT + 200mV) to 12.6
INPUT VOLTAGE (V)
Typical Operating Circuit
+SUPPLY INPUT (SEE SELECTOR GUIDE)
Pin Configuration
IN
OUT
TOP VIEW
*
IN 1
OUT 2
MAX6001
MAX6002
MAX6003
MAX6004
MAX6005
3
REFERENCE
OUT
MAX6001
MAX6002
MAX6003
MAX6004
MAX6005
GND
GND
2.2nF MAX*
SOT23-3
*CAPACITORS ARE OPTIONAL
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
MAX6001–MAX6005
General Description
MAX6001–MAX6005
Low-Cost, Low-Power, Low-Dropout,
SOT23-3 Voltage References
ABSOLUTE MAXIMUM RATINGS
Voltages Referenced to GND
IN .........................................................................-0.3V to +13.5V
OUT .............................................................-0.3V to (VIN + 0.3V)
Output Short Circuit to GND or IN (VIN < 6V) ............Continuous
Output Short Circuit to GND or IN (VIN ≥ 6V) .....................60sec
Continuous Power Dissipation (TA = +70°C)
SOT23-3 (derate 4.0mW/°C above +70°C)..................320mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS—MAX6001
(VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
1.237
1.250
1.263
V
20
100
ppm/°C
8
120
µV/V
Sourcing: 0 ≤ IOUT ≤ 400µA
0.12
0.8
Sinking: -400µA ≤ IOUT ≤ 0
0.15
1.0
OUTPUT
Output Voltage
VOUT
Output Voltage Temperature
Coefficient (Note 2)
TCVOUT
Line Regulation
∆VOUT/
∆VIN
Load Regulation
∆VOUT/
∆IOUT
OUT Short-Circuit Current
ISC
TA = +25°C
2.5V ≤ VIN ≤ 12.6V
Short to GND
4
Short to IN
4
Temperature Hysteresis
(Note 3)
Long-Term Stability
∆VOUT/
time
µV/µA
mA
130
ppm
1,000 hours at TA = +25°C
50
ppm/
1,000hrs
f = 0.1Hz to 10Hz
25
µVp-p
f = 10Hz to 10kHz
65
µVRMS
VIN = 5V ±100mV, f = 120Hz
86
dB
DYNAMIC
Noise Voltage
Ripple Rejection
Turn-On Settling Time
Capacitive-Load Stability Range
eOUT
∆VOUT/
∆VIN
tR
COUT
To VOUT = 0.1% of final value, COUT = 50pF
(Note 4)
30
0
µs
2.2
nF
INPUT
Supply Voltage Range
VIN
Quiescent Supply Current
IIN
Change in Supply Current
IIN/VIN
2
Guaranteed by line-regulation test
2.5V ≤ VIN ≤ 12.6V
2.5
12.6
V
27
45
µA
0.8
2.6
µA/V
_______________________________________________________________________________________
Low-Cost, Low-Power, Low-Dropout,
SOT23-3 Voltage References
(VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
2.475
2.500
2.525
V
20
100
ppm/°C
(VOUT + 0.2V) ≤ VIN ≤ 12.6V
15
200
µV/V
OUTPUT
Output Voltage
VOUT
Output Voltage Temperature
Coefficient (Note 2)
TCVOUT
Line Regulation
∆VOUT/
∆VIN
Load Regulation
∆VOUT/
∆IOUT
Dropout Voltage
(Note 5)
VIN VOUT
OUT Short-Circuit Current
ISC
Temperature Hysteresis
(Note 3)
∆VOUT/
time
Long-Term Stability
∆VOUT/
time
TA = +25°C
Sourcing: 0 ≤ IOUT ≤ 400µA
0.14
0.90
Sinking: -400µA ≤ IOUT ≤ 0
0.18
1.10
IOUT = 400µA
100
200
Short to GND
4
Short to IN
4
1,000 hours at TA = +25°C
µV/µA
mV
mA
130
ppm
50
ppm/
1,000hrs
DYNAMIC
Noise Voltage
eOUT
∆VOUT/
∆VIN
Ripple Rejection
Turn-On Settling Time
Capacitive-Load Stability Range
tR
COUT
f = 0.1Hz to 10Hz
60
µVp-p
f = 10Hz to 10kHz
125
µVRMS
VIN = 5V ±100mV, f = 120Hz
82
dB
To VOUT = 0.1% of final value, COUT = 50pF
(Note 4)
85
0
µs
2.2
nF
INPUT
Supply Voltage Range
VIN
Quiescent Supply Current
IIN
Change in Supply Current
IIN/VIN
Guaranteed by line-regulation test
(VOUT + 0.2V) ≤ VIN ≤ 12.6V
VOUT + 0.2
12.6
V
27
45
µA
0.8
2.6
µA/V
_______________________________________________________________________________________
3
MAX6001–MAX6005
ELECTRICAL CHARACTERISTICS—MAX6002
MAX6001–MAX6005
Low-Cost, Low-Power, Low-Dropout,
SOT23-3 Voltage References
ELECTRICAL CHARACTERISTICS—MAX6003
(VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
2.97
3.00
3.03
V
20
100
ppm/°C
(VOUT + 0.2V) ≤ VIN ≤ 12.6V
20
220
µV/V
Sourcing: 0 ≤ IOUT ≤ 400µA
0.14
0.90
Sinking: -400µA ≤ IOUT ≤ 0
0.18
1.10
IOUT = 400µA
100
200
Short to GND
4
Short to IN
4
OUTPUT
Output Voltage
VOUT
Output Voltage Temperature
Coefficient (Note 2)
TCVOUT
Line Regulation
∆VOUT/
∆VIN
Load Regulation
∆VOUT/
∆IOUT
Dropout Voltage
(Note 5)
VIN VOUT
OUT Short-Circuit Current
ISC
Temperature Hysteresis
(Note 3)
∆VOUT/
time
Long-Term Stability
∆VOUT/
time
TA = +25°C
1,000 hours at TA = +25°C
µV/µA
mV
mA
130
ppm
50
ppm/
1,000hrs
DYNAMIC
Noise Voltage
Ripple Rejection
Turn-On Settling Time
Capacitive-Load Stability Range
eOUT
∆VOUT/
∆VIN
tR
COUT
f = 0.1Hz to 10Hz
75
µVp-p
f = 10Hz to 10kHz
150
µVRMS
VIN = 5V ±100mV, f = 120Hz
80
dB
To VOUT = 0.1% of final value, COUT = 50pF
(Note 4)
100
0
µs
2.2
nF
INPUT
Supply Voltage Range
VIN
Quiescent Supply Current
IIN
Change in Supply Current
IIN/VIN
4
Guaranteed by line-regulation test
(VOUT + 0.2V) ≤ VIN ≤ 12.6V
VOUT + 0.2
12.6
V
27
45
µA
0.8
2.6
µA/V
_______________________________________________________________________________________
Low-Cost, Low-Power, Low-Dropout,
SOT23-3 Voltage References
(VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
4.055
4.096
4.137
V
20
100
ppm/°C
(VOUT + 0.2V) ≤ VIN ≤ 12.6V
25
240
µV/V
Sourcing: 0 ≤ IOUT ≤ 400µA
0.15
1.00
Sinking: -400µA ≤ IOUT ≤ 0
0.20
1.20
IOUT = 400µA
100
200
Short to GND
4
Short to IN
4
OUTPUT
OUTPUT
Output Voltage
VOUT
Output Voltage Temperature
Coefficient (Note 2)
TCVOUT
Line Regulation
∆VOUT/
∆VIN
Load Regulation
∆VOUT/
∆IOUT
Dropout Voltage
(Note 5)
VIN VOUT
OUT Short-Circuit Current
ISC
TA = +25°C
µV/µA
mV
mA
Temperature Hysteresis
(Note 3)
∆VOUT/
time
1,000 hours at TA = +25°C
130
ppm
Long-Term Stability
∆VOUT/
time
1,000 hours at TA = +25°C
50
ppm/
1,000hrs
f = 0.1Hz to 10Hz
100
µVp-p
f = 10Hz to 10kHz
200
µVRMS
VIN = 5V ±100mV, f = 120Hz
77
dB
To VOUT = 0.1% of final value, COUT = 50pF
160
µs
DYNAMIC
Noise Voltage
eOUT
∆VOUT/
∆VIN
Ripple Rejection
Turn-On Settling Time
Capacitive-Load Stability Range
tR
COUT
(Note 4)
0
2.2
nF
12.6
V
INPUT
Supply Voltage Range
VIN
Quiescent Supply Current
IIN
Change in Supply Current
IIN/VIN
Guaranteed by line-regulation test
(VOUT + 0.2V) ≤ VIN ≤ 12.6V
VOUT + 0.2
27
45
µA
0.8
2.6
µA/V
_______________________________________________________________________________________
5
MAX6001–MAX6005
ELECTRICAL CHARACTERISTICS—MAX6004
MAX6001–MAX6005
Low-Cost, Low-Power, Low-Dropout,
SOT23-3 Voltage References
ELECTRICAL CHARACTERISTICS—MAX6005
(VIN = +5.5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
4.950
5.000
5.050
V
20
100
ppm/°C
(VOUT + 0.2V) ≤ VIN ≤ 12.6V
25
240
µV/V
OUTPUT
OUTPUT
Output Voltage
VOUT
Output Voltage Temperature
Coefficient (Note 2)
TCVOUT
Line Regulation
∆VOUT/
∆VIN
Load Regulation
∆VOUT/
∆IOUT
Dropout Voltage
(Note 5)
VIN VOUT
OUT Short-Circuit Current
ISC
TA = +25°C
Sourcing: 0 ≤ IOUT ≤ 400µA
0.17
1.00
Sinking: -400µA ≤ IOUT ≤ 0
0.24
1.20
IOUT = 400µA
100
200
Short to GND
4
Short to IN
4
Temperature Hysteresis
(Note 3)
Long-Term Stability
∆VOUT/
time
µV/µA
mV
mA
130
ppm
1,000 hours at TA = +25°C
50
ppm/
1,000hrs
DYNAMIC
DYNAMIC
Noise Voltage
Ripple Rejection
Turn-On Settling Time
Capacitive-Load Stability Range
eOUT
∆VOUT/
∆VIN
tR
COUT
f = 0.1Hz to 10Hz
120
µVp-p
f =10Hz to 10kHz
240
µVRMS
VIN = 5V ±100mV, f = 120Hz
72
dB
To VOUT = 0.1% of final value, COUT = 50pF
(Note 4)
220
0
µs
2.2
nF
INPUT
INPUT
Supply Voltage Range
VIN
Quiescent Supply Current
IIN
Change in Supply Current
IIN/VIN
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
6
Guaranteed by line-regulation test
(VOUT + 0.2V) ≤ VIN ≤ 12.6V
VOUT + 0.2
12.6
V
27
45
µA
0.8
2.6
µA/V
All devices are 100% production tested at TA = +25°C and are guaranteed by design for TA = TMIN to TMAX, as specified.
Temperature coefficient is measured by the “box” method; i.e., the maximum ∆VOUT is divided by the maximum ∆t.
Thermal hysteresis is defined as the change in +25°C output voltage before and after cycling the device from TMIN to TMAX.
Not production tested. Guaranteed by design.
Dropout voltage is the minimum input voltage at which VOUT changes ≤ 0.2% from VOUT at VIN = 5.0V (VIN = 5.5V for MAX6005).
_______________________________________________________________________________________
Low-Cost, Low-Power, Low-Dropout,
SOT23-3 Voltage References
MAX6005
OUTPUT VOLTAGE
TEMPERATURE DRIFT
1.2500
5.000
OUTPUT VOLTAGE (V)
4.996
VOUT (V)
4.994
4.992
1.2440
4.990
4.998
4.997
4.996
20
40
60
80
100
TEMPERATURE DRIFT (°C)
4.993
-20
0
TA = +85°C
200
TA = -40°C
100
0
TA = +25°C
40
60
80
0 100 200 300 400 500 600 700 800 900 1,000
100
TIME (HOURS)
MAX6005
LINE REGULATION
MAX6002/MAX6003
DROPOUT VOLTAGE vs.
SOURCE CURRENT
800
OUTPUT VOLTAGE CHANGE (µV)
MAX6001-04
300
20
TEMPERATURE DRIFT (°C)
MAX6001
LINE REGULATION
400
4.994
TA = +85°C
0.8
0.7
600
TA = -40°C
400
200
TA = +25°C
6
8
10
12
0.5
TA = -40°C
0.4
TA = +85°C
0.3
0.2
0
-200
5
14
TA = +25°C
0
7
9
11
13
0
200
400
600
800
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
SOURCE CURRENT (µA)
MAX6001
LOAD REGULATION
MAX6005
LOAD REGULATION
MAX6004/MAX6005
DROPOUT VOLTAGE vs.
SOURCE CURRENT
TA = -40°C
0
TA = +85°C
TA = +25°C
-0.2
0.200
TA = -40°C
0
-0.200
0.30
TA = +25°C
TA = -40°C
0.25
DROPOUT VOLTAGE (V)
0.2
0.400
MAX6001-08
MAX6001-07
0.4
OUTPUT VOLTAGE CHANGE (mV)
4
0.6
0.1
-100
2
MAX6001-06
0
4.986
-40
DROPOUT VOLTAGE (V)
-20
THREE
TYPICAL PARTS
4.988
THREE
TYPICAL PARTS
MAX6001-05
1.2400
-40
OUTPUT VOLTAGE CHANGE (µV)
4.999
4.995
1.2420
OUTPUT VOLTAGE CHANGE (mV)
5.000
1,000
MAX6001-09
VOUT (V)
1.2460
THREE
TYPICAL PARTS
5.002
5.001
4.998
1.2480
5.003
MAX6001-02
5.002
MAX6001-01
1.2520
MAX6005
LONG-TERM DRIFT
MAX6001-03
MAX6001
OUTPUT VOLTAGE
TEMPERATURE DRIFT
TA = +85°C
0.20
0.15
0.10
TA = +25°C
0.05
TA = +85°C
-0.4
-500 -375 -250 -125
0
125 250 375 500
LOAD CURRENT (µA)
-0.400
-500 -375 -250 -125
0
0
125 250 375 500
LOAD CURRENT (µA)
0
200
400
600
800
1,000
SOURCE CURRENT (µA)
_______________________________________________________________________________________
7
MAX6001–MAX6005
Typical Operating Characteristics
(VIN = +5V for MAX6001–MAX6004, VIN = +5.5V for MAX6005; IOUT = 0; TA = +25°C; unless otherwise noted.) (Note 6)
Typical Operating Characteristics (continued)
(VIN = +5V for MAX6001–MAX6004, VIN = +5.5V for MAX6005; IOUT = 0; TA = +25°C; unless otherwise noted.) (Note 6)
PSR (mV/V)
PSR (mV/V)
10
1
1
0.1
0.1
0.01
0.01
40
VALID OVER SPECIFIED
VIN (MIN) TO VIN (MAX)
FOR EACH PART
38
36
SUPPLY CURRENT (µA)
VCC = 5.5V ±0.25V
10
SUPPLY CURRENT
vs. INPUT VOLTAGE
MAX16001-11
100
MAX6001-10
100
MAX6005
POWER-SUPPLY REJECTION
vs. FREQUENCY
MAX6001-12
MAX6001
POWER-SUPPLY REJECTION
vs. FREQUENCY
34
32
30
28
26
24
22
1k
10k
100k
1M
20
10
10M
100
1k
10k
100k
1M
2
10M
4
6
8
10
FREQUENCY (Hz)
FREQUENCY (Hz)
INPUT VOLTAGE (V)
MAX6001
OUTPUT IMPEDANCE
vs. FREQUENCY
MAX6005
OUTPUT IMPEDANCE
vs. FREQUENCY
SUPPLY CURRENT
vs. TEMPERATURE
10
1
40
100
SUPPLY CURRENT (µA)
OUTPUT IMPEDANCE (Ω)
100
10
12
14
MAX6001-15
1k
MAX6001-13
1k
MAX6001-14
100
OUTPUT IMPEDANCE (Ω)
35
VIN = 12.5V
VIN = 7.5V
30
VIN = 5.5V
25
1
VIN = 2.5V (MAX6001 ONLY)
20
0.1
0.1
0.01 0.1
1
10
100
1k
0.01 0.1
10k 100k 1M
1
10
100
1k
-40
10k 100k 1M
-20
0
20
40
TEMPERATURE (°C)
MAX6001
0.1Hz TO 10Hz OUTPUT NOISE
MAX6005
0.1Hz TO 10Hz OUTPUT NOISE
MAX6001
TURN-ON TRANSIENT
MAX6001-17
VIN
1V/div
VOUT
20µV/div
VOUT
1V/div
1sec/div
1sec/div
80
100
MAX6001-18
FREQUENCY (Hz)
VOUT
10µV/div
8
60
FREQUENCY (Hz)
MAX6001-16
MAX6001–MAX6005
Low-Cost, Low-Power, Low-Dropout,
SOT23-3 Voltage References
10µs/div
_______________________________________________________________________________________
Low-Cost, Low-Power, Low-Dropout,
SOT23-3 Voltage References
MAX6005
LOAD-TRANSIENT RESPONSE
MAX6001
LOAD-TRANSIENT RESPONSE
MAX6005
TURN-ON TRANSIENT
IOUT
40µA/div
-25µA
IOUT
50µA/div
VIN
2V/div
VOUT
50mV/div
VOUT
20mV/div
MAX6001-21
+25µA
MAX6001-20
MAX6001-19
VOUT
2V/div
20µs/div
10µs/div
IOUT = ±25µA, AC-COUPLED
10µs/div
VIN = 5.5V, IOUT = ±25µA, AC-COUPLED
MAX6005
LOAD-TRANSIENT RESPONSE
MAX6001-23
MAX6001-22
+500µA
IOUT
-500µA 500µA/div
IOUT
1mA/div
MAX6001
LINE-TRANSIENT RESPONSE
MAX6001-24
MAX6001
LOAD-TRANSIENT RESPONSE
VIN
200mV/div
VOUT
200mV/div
VOUT
0.2V/div
VOUT
100mV/div
20µs/div
10µs/div
VIN = 5.5V, IOUT = ±500µA, AC-COUPLED
IOUT = ±500µA, AC-COUPLED
2.5µs/div
VIN = 5V ±0.25V, AC-COUPLED
MAX6001-25
MAX6005
LINE-TRANSIENT RESPONSE
VIN
200mV/div
VOUT
100mV/div
2µs/div
VIN = 5.5V ±0.25V, AC-COUPLED
Note 6: Many of the Typical Operating Characteristics of the MAX6001 family are
extremely similar. The extremes of these characteristics are found in the
MAX6001 (1.2V output) and MAX6005 (5.0V output) devices. The Typical
Operating Characteristics of the remainder of the MAX6001 family typically
lie between these two extremes and can be estimated based on their output
voltage.
_______________________________________________________________________________________
9
MAX6001–MAX6005
Typical Operating Characteristics (continued)
(VIN = +5V for MAX6001–MAX6004, VIN = +5.5V for MAX6005; IOUT = 0; TA = +25°C; unless otherwise noted.) (Note 6)
MAX6001–MAX6005
Low-Cost, Low-Power, Low-Dropout,
SOT23-3 Voltage References
Pin Description
PIN
NAME
1
IN
FUNCTION
Supply Voltage Input
2
OUT
Reference Voltage Output
3
GND
Ground
Detailed Description
The MAX6001–MAX6005 bandgap references offer a
temperature coefficient of <100ppm/°C and initial accuracy of better than 1%. These devices can sink and source
up to 400µA with <200mV of dropout voltage, making
them attractive for use in low-voltage applications.
Supply Current
The quiescent supply current of these series-mode references is a maximum of 45µA and is virtually independent of the supply voltage, with only a 0.8µA/V variation
with supply voltage. Unlike shunt-mode references, the
load current of these series-mode references is drawn
from the supply voltage only when required, so supply
current is not wasted and efficiency is maximized over
the entire supply voltage range. This improved efficiency can help reduce power dissipation and extend battery life.
When the supply voltage is below the minimum specified input voltage (as during turn-on), the devices can
draw up to 200µA beyond the nominal supply current.
The input voltage source must be capable of providing
this current to ensure reliable turn-on.
Applications Information
Output Voltage Hysteresis
Output/Load Capacitance
Output voltage hysteresis is the change in the output
voltage at TA = +25°C before and after the device is
cycled over its entire operating temperature range.
Hysteresis is caused by differential package stress
appearing across the bandgap core transistors. The
typical temperature hysteresis value is 130ppm.
Devices in this family do not require an output capacitance for frequency stability. They are stable for capacitive loads from 0 to 2.2nF. However, in applications
where the load or the supply can experience step
changes, an output capacitor will reduce the amount of
overshoot (or undershoot) and assist the circuit’s transient response. Many applications do not need an
external capacitor, and this family can offer a significant advantage in these applications when board
space is critical.
VS
VCC
+2VS
V+
IN
MAX681
GND
V-
MAX6001
MAX6002
MAX6003
MAX6004
MAX6005
+REF OUTPUT
OUT
1M, 0.1%
V+
OUTPUT
GND
ICL7652
V1M, 0.1%
10nF
-2VS
Figure 1. Positive and Negative References from Single +3V or +5V Supply
10
______________________________________________________________________________________
-REF OUTPUT
Low-Cost, Low-Power, Low-Dropout,
SOT23-3 Voltage References
TRANSISTOR COUNT: 70
Positive and Negative
Low-Power Voltage Reference
Figure 1 shows a typical method for developing a bipolar reference. The circuit uses a MAX681 voltage doubler/inverter charge-pump converter to power an
ICL7652, thus creating a positive as well as a negative
reference voltage.
______________________________________________________________________________________
11
MAX6001–MAX6005
Chip Information
Turn-On Time
These devices typically turn on and settle to within
0.1% of their final value in 30µs to 220µs depending on
the device. The turn-on time can increase up to 1.5ms
with the device operating at the minimum dropout voltage and the maximum load.
Low-Cost, Low-Power, Low-Dropout,
SOT23-3 Voltage References
SOTPO3L.EPS
MAX6001–MAX6005
Package Information
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
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© 1999 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.