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General Description
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.
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.
Applications
Portable/Battery-Powered Equipment
Notebook Computers
PDAs, GPSs, and DMMs
Cellular Phones
Pagers
Hard-Disk Drives
Features
♦ 1% max Initial Accuracy
♦ 100ppm/°C max Temperature Coefficient
♦ 45µA max Quiescent Supply Current
♦ 0.8µA/V Supply Current Variation with V
IN
♦ ±400µA Output Source and Sink Current
♦ 100mV Dropout at 400µA Load Current
♦ 0.12µV/µA Load Regulation
♦ 8µV/V Line Regulation
♦ Stable with C
LOAD
= 0 to 2.2nF
MAX6001–MAX6005
Low-Cost, Low-Power, Low-Dropout,
SOT23-3 Voltage References
________________________________________________________________
Maxim Integrated Products
1
IN
+SUPPLY INPUT (SEE
SELECTOR GUIDE
)
OUT REFERENCE
OUT
2.2nF MAX*
*CAPACITORS ARE OPTIONAL
GND
MAX6001
MAX6002
MAX6003
MAX6004
MAX6005
*
Typical Operating Circuit
13-1395; Rev 1; 4/99
PART
MAX6001EUR-T
MAX6002EUR-T
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
PIN-
PACKAGE
3 SOT23-3
3 SOT23-3
Ordering Information
SOT
TOP MARK
FZCW
FZCX
MAX6004EUR-T
-40°C to +85°C 3 SOT23-3 FZCY
MAX6005EUR-T
-40°C to +85°C 3 SOT23-3 FZCZ
(V
OUT
+ 200mV) to 12.65.000MAX6005
(V
OUT
+ 200mV) to 12.64.096MAX6004
(V
OUT
+ 200mV) to 12.62.500MAX6002
2.5 to 12.61.250MAX6001
INPUT VOLTAGE (V)
OUTPUT
VOLTAGE (V)
PART
Selector Guide
OUT
1
3 GND
IN
MAX6001
MAX6002
MAX6003
MAX6004
MAX6005
SOT23-3
TOP VIEW
2
Pin Configuration
(V
OUT
+ 200mV) to 12.63.000MAX6003
MAX6003EUR-T
-40°C to +85°C 3 SOT23-3 FZDK
MAX6001–MAX6005
Low-Cost, Low-Power, Low-Dropout,
SOT23-3 Voltage References
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—MAX6001
(VIN= +5V, I
OUT
= 0, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
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.
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
2.5V ≤ VIN≤ 12.6V
Guaranteed by line-regulation test
TA= +25°C
(Note 4)
To V
OUT
= 0.1% of final value, C
OUT
= 50pF
VIN= 5V ±100mV, f = 120Hz
Short to IN
f = 10Hz to 10kHz
f = 0.1Hz to 10Hz
Short to GND
Sinking: -400µA ≤ I
OUT
≤ 0
2.5V ≤ VIN≤ 12.6V
Sourcing: 0 ≤ I
OUT
≤ 400µA
1,000 hours at TA= +25°C
CONDITIONS
µA/V0.8 2.6IIN/V
IN
Change in Supply Current
µA27 45I
IN
Quiescent Supply Current
V2.5 12.6V
IN
Supply Voltage Range
nF0 2.2C
OUT
Capacitive-Load Stability Range
µs30t
R
Turn-On Settling Time
dB86
∆V
OUT
/
∆V
IN
Ripple Rejection
µV
RMS
65
µVp-p25
e
OUT
Noise Voltage
ppm/
1,000hrs
50
∆V
OUT
/
time
Long-Term Stability
1.237 1.250 1.263 VV
OUT
Output Voltage
ppm130
Temperature Hysteresis
(Note 3)
4
mA
4
I
SC
OUT Short-Circuit Current
0.15 1.0
20 100
µV/V8 120
∆V
OUT
/
∆V
IN
Line Regulation
0.12 0.8
UNITSMIN TYP MAXSYMBOLPARAMETER
ppm/°CTCV
OUT
Output Voltage Temperature
Coefficient (Note 2)
∆V
OUT
/
∆I
OUT
Load Regulation µV/µA
OUTPUT
DYNAMIC
INPUT
MAX6001–MAX6005
Low-Cost, Low-Power, Low-Dropout,
SOT23-3 Voltage References
_______________________________________________________________________________________ 3
INPUT
DYNAMIC
OUTPUT
Load Regulation
∆V
OUT
/
∆I
OUT
Output Voltage Temperature
Coefficient (Note 2)
ppm/°CTCV
OUT
TA= +25°C
PARAMETER SYMBOL MIN TYP MAX UNITS
0.14 0.90
Line Regulation
∆V
OUT
/
∆V
IN
15 200
20 100
0.18 1.10
Dropout Voltage
(Note 5)
VIN-
V
OUT
100 200 mV
OUT Short-Circuit Current I
SC
4
mA
4
Output Voltage V
OUT
V2.475 2.500 2.525
Temperature Hysteresis
(Note 3)
∆V
OUT
/
time
130 ppm
Long-Term Stability
∆V
OUT
/
time
50
ppm/
1,000hrs
Noise Voltage e
OUT
60 µVp-p
125 µV
RMS
Ripple Rejection
∆V
OUT
/
∆V
IN
82 dB
Turn-On Settling Time t
R
85 µs
Capacitive-Load Stability Range C
OUT
0 2.2 nF
Supply Voltage Range V
IN
V
OUT
+ 0.2 12.6 V
Quiescent Supply Current I
IN
27 45 µA
Change in Supply Current IIN/V
IN
0.8 2.6 µA/V
CONDITIONS
Sourcing: 0 ≤ I
OUT
≤ 400µA
1,000 hours at TA= +25°C
(V
OUT
+ 0.2V) ≤ VIN≤ 12.6V
Sinking: -400µA ≤ I
OUT
≤ 0
I
OUT
= 400µA
f = 0.1Hz to 10Hz
Short to GND
Short to IN
f = 10Hz to 10kHz
VIN= 5V ±100mV, f = 120Hz
To V
OUT
= 0.1% of final value, C
OUT
= 50pF
(Note 4)
Guaranteed by line-regulation test
(V
OUT
+ 0.2V) ≤ VIN≤ 12.6V
µV/V
µV/µA
ELECTRICAL CHARACTERISTICS—MAX6002
(VIN= +5V, I
OUT
= 0, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
MAX6001–MAX6005
Low-Cost, Low-Power, Low-Dropout,
SOT23-3 Voltage References
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS—MAX6003
(VIN= +5V, I
OUT
= 0, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
Line Regulation
∆V
OUT
/
∆V
IN
20 220(V
OUT
+ 0.2V) ≤ VIN≤ 12.6V µV/V
ppm/°C
TA= +25°C
PARAMETER SYMBOL MIN TYP MAX UNITS
Output Voltage Temperature
Coefficient (Note 2)
TCV
OUT
20 100
OUT Short-Circuit Current I
SC
4
mA
4
Output Voltage V
OUT
V2.97 3.00 3.03
Temperature Hysteresis
(Note 3)
∆V
OUT
/
time
130 ppm
Long-Term Stability
∆V
OUT
/
time
50
ppm/
1,000hrs
Noise Voltage e
OUT
75 µVp-p
150 µV
RMS
Ripple Rejection
∆V
OUT
/
∆V
IN
80 dB
Turn-On Settling Time t
R
100 µs
Capacitive-Load Stability Range C
OUT
0 2.2 nF
Supply Voltage Range V
IN
V
OUT
+ 0.2 12.6 V
Quiescent Supply Current I
IN
27 45 µA
Change in Supply Current IIN/V
IN
0.8 2.6 µA/V
CONDITIONS
1,000 hours at TA= +25°C
f = 0.1Hz to 10Hz
Short to GND
Short to IN
f = 10Hz to 10kHz
VIN= 5V ±100mV, f = 120Hz
To V
OUT
= 0.1% of final value, C
OUT
= 50pF
(Note 4)
Guaranteed by line-regulation test
(V
OUT
+ 0.2V) ≤ VIN≤ 12.6V
OUTPUT
DYNAMIC
INPUT
Dropout Voltage
(Note 5)
VIN-
V
OUT
100 200I
OUT
= 400µA mV
Load Regulation
∆V
OUT
/
∆I
OUT
0.14 0.90Sourcing: 0 ≤ I
OUT
≤ 400µA
µV/µA
Sinking: -400µA ≤ I
OUT
≤ 0 0.18 1.10
MAX6001–MAX6005
Low-Cost, Low-Power, Low-Dropout,
SOT23-3 Voltage References
_______________________________________________________________________________________ 5
ELECTRICAL CHARACTERISTICS—MAX6004
(VIN= +5V, I
OUT
= 0, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
(V
OUT
+ 0.2V) ≤ VIN≤ 12.6V
Guaranteed by line-regulation test
TA= +25°C
(Note 4)
To V
OUT
= 0.1% of final value, C
OUT
= 50pF
VIN= 5V ±100mV, f = 120Hz
f = 10Hz to 10kHz
Short to IN
Short to GND
f = 0.1Hz to 10Hz
I
OUT
= 400µA
Sourcing: 0 ≤ I
OUT
≤ 400µA
(V
OUT
+ 0.2V) ≤ VIN≤ 12.6V
1,000 hours at TA= +25°C
1,000 hours at TA= +25°C
CONDITIONS
µA/V0.8 2.6IIN/V
IN
Change in Supply Current
µA27 45I
IN
Quiescent Supply Current
VV
OUT
+ 0.2 12.6V
IN
Supply Voltage Range
INPUT
nF0 2.2C
OUT
Capacitive-Load Stability Range
µs160t
R
Turn-On Settling Time
dB77
∆V
OUT
/
∆V
IN
Ripple Rejection
µV
RMS
200
µVp-p100
e
OUT
Noise Voltage
ppm/
1,000hrs
50
∆V
OUT
/
time
Long-Term Stability
ppm130
∆V
OUT
/
time
Temperature Hysteresis
(Note 3)
V4.055 4.096 4.137V
OUT
OUTPUT
Output Voltage
4
mA
4
I
SC
OUT Short-Circuit Current
mV100 200
VIN-
V
OUT
Dropout Voltage
(Note 5)
0.15 1.00
ppm/°CTCV
OUT
Output Voltage Temperature
Coefficient (Note 2)
20 100
µV/V25 240
∆V
OUT
/
∆V
IN
Line Regulation
µV/µA
∆V
OUT
/
∆I
OUT
Load Regulation
UNITSMIN TYP MAXSYMBOLPARAMETER
Sinking: -400µA ≤ I
OUT
≤ 0 0.20 1.20
INPUT
OUTPUT
DYNAMIC
MAX6001–MAX6005
Low-Cost, Low-Power, Low-Dropout,
SOT23-3 Voltage References
6 _______________________________________________________________________________________
INPUT
DYNAMIC
OUTPUT
Note 1: All devices are 100% production tested at TA= +25°C and are guaranteed by design for TA= T
MIN
to T
MAX
, as specified.
Note 2: Temperature coefficient is measured by the “box” method; i.e., the maximum ∆V
OUT
is divided by the maximum ∆t.
Note 3: Thermal hysteresis is defined as the change in +25°C output voltage before and after cycling the device from T
MIN
to T
MAX
.
Note 4: Not production tested. Guaranteed by design.
Note 5: Dropout voltage is the minimum input voltage at which V
OUT
changes ≤ 0.2% from V
OUT
at VIN= 5.0V (VIN= 5.5V for MAX6005).
ELECTRICAL CHARACTERISTICS—MAX6005
(VIN= +5.5V, I
OUT
= 0, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
0.24 1.20Sinking: -400µA ≤ I
OUT
≤ 0
20 100
INPUT
DYNAMIC
PARAMETER SYMBOL MIN TYP MAX UNITS
Load Regulation
∆V
OUT
/
∆I
OUT
µV/µA
Line Regulation
∆V
OUT
/
∆VIN
25 240 µV/V
Output Voltage Temperature
Coefficient (Note 2)
TCV
OUT
ppm/°C
0.17 1.00
Dropout Voltage
(Note 5)
VIN-
V
OUT
100 200 mV
OUT Short-Circuit Current I
SC
4
mA
4
Output Voltage V
OUT
4.950 5.000 5.050 V
Temperature Hysteresis
(Note 3)
130 ppm
Long-Term Stability
∆V
OUT
/
time
50
ppm/
1,000hrs
Noise Voltage e
OUT
120 µVp-p
240 µV
RMS
Ripple Rejection
∆V
OUT
/
∆V
IN
72 dB
Turn-On Settling Time t
R
220 µs
Capacitive-Load Stability Range C
OUT
0 2.2 nF
Supply Voltage Range V
IN
V
OUT
+ 0.2 12.6 V
Quiescent Supply Current I
IN
27 45 µA
Change in Supply Current IIN/V
IN
0.8 2.6 µA/V
CONDITIONS
1,000 hours at TA= +25°C
(V
OUT
+ 0.2V) ≤ VIN≤ 12.6V
Sourcing: 0 ≤ I
OUT
≤ 400µA
I
OUT
= 400µA
f = 0.1Hz to 10Hz
Short to GND
Short to IN
f =10Hz to 10kHz
VIN= 5V ±100mV, f = 120Hz
To V
OUT
= 0.1% of final value, C
OUT
= 50pF
(Note 4)
TA= +25°C
Guaranteed by line-regulation test
(V
OUT
+ 0.2V) ≤ VIN≤ 12.6V
OUTPUT
MAX6001–MAX6005
Low-Cost, Low-Power, Low-Dropout,
SOT23-3 Voltage References
_______________________________________________________________________________________
7
Typical Operating Characteristics
(VIN= +5V for MAX6001–MAX6004, VIN= +5.5V for MAX6005; I
OUT
= 0; TA= +25°C; unless otherwise noted.) (Note 6)
1.2400
1.2420
1.2460
1.2440
1.2500
1.2480
1.2520
-40 0-20 20 40 60 80 100
MAX6001
OUTPUT VOLTAGE
TEMPERATURE DRIFT
MAX6001-01
TEMPERATURE DRIFT (°C)
V
OUT
(V)
THREE
TYPICAL PARTS
4.986
4.990
4.988
4.996
4.994
4.992
5.002
5.000
4.998
-40 0 20-20 40 60 80 100
MAX6005
OUTPUT VOLTAGE
TEMPERATURE DRIFT
MAX6001-02
TEMPERATURE DRIFT (°C)
V
OUT
(V)
THREE
TYPICAL PARTS
4.993
4.995
4.994
4.999
4.998
4.997
4.996
5.002
5.001
5.000
5.003
0 300
400
500100 200 600 700 800 9001,000
MAX6005
LONG-TERM DRIFT
MAX6001-03
TIME (HOURS)
OUTPUT VOLTAGE (V)
THREE
TYPICAL PARTS
-100
0
200
100
300
400
264 8 10 12 14
MAX6001
LINE REGULATION
MAX6001-04
INPUT VOLTAGE (V)
OUTPUT VOLTAGE CHANGE (µV)
TA = +85°C
TA = -40°C
TA = +25°C
-0.4
-0.2
0
0.2
0.4
-500 -250 0 250-375 -125 125 375 500
MAX6001
LOAD REGULATION
MAX6001-07
LOAD CURRENT (µA)
OUTPUT VOLTAGE CHANGE (mV)
TA = +85°C
TA = -40°C
TA = +25°C
-200
0
400
200
600
800
5 7 9 11 13
MAX6005
LINE REGULATION
MAX6001-05
INPUT VOLTAGE (V)
OUTPUT VOLTAGE CHANGE (µV)
TA = +85°C
TA = -40°C
TA = +25°C
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0 200 400 600 800 1,000
MAX6002/MAX6003
DROPOUT VOLTAGE vs.
SOURCE CURRENT
MAX6001-06
SOURCE CURRENT (µA)
DROPOUT VOLTAGE (V)
TA = +85°C
TA = -40°C
TA = +25°C
-0.400
-0.200
0
0.200
0.400
-500 -250 0 250-375 -125 125 375 500
MAX6005
LOAD REGULATION
MAX6001-08
LOAD CURRENT (µA)
OUTPUT VOLTAGE CHANGE (mV)
TA = +85°C
TA = -40°C
TA = +25°C
0
0.10
0.05
0.20
0.15
0.25
0.30
0 400200 600 800 1,000
MAX6004/MAX6005
DROPOUT VOLTAGE vs.
SOURCE CURRENT
MAX6001-09
SOURCE CURRENT (µA)
DROPOUT VOLTAGE (V)
TA = +85°C
TA = -40°C
TA = +25°C
MAX6001–MAX6005
Low-Cost, Low-Power, Low-Dropout,
SOT23-3 Voltage References
8 _______________________________________________________________________________________
100 1k 10k 100k 1M 10M
MAX6001
POWER-SUPPLY REJECTION
vs. FREQUENCY
MAX6001-10
FREQUENCY (Hz)
PSR (mV/V)
100
0.01
0.1
1
10
MAX6005
POWER-SUPPLY REJECTION
vs. FREQUENCY
MAX16001-11
FREQUENCY (Hz)
PSR (mV/V)
100
0.01
0.1
1
10
10 10k 100k 1M100 1k 10M
VCC = 5.5V ±0.25V
20
26
24
22
28
30
32
34
36
38
40
264 8 10 12 14
SUPPLY CURRENT
vs. INPUT VOLTAGE
MAX6001-12
INPUT VOLTAGE (V)
SUPPLY CURRENT (µA)
VALID OVER SPECIFIED
V
IN
(MIN) TO VIN (MAX)
FOR EACH PART
0.01 100 10k10.1 10 1k 100k 1M
MAX6001
OUTPUT IMPEDANCE
vs. FREQUENCY
MAX6001-13
FREQUENCY (Hz)
OUTPUT IMPEDANCE (Ω)
0.1
1
10
100
1k
0.01 100 10k10.1 10 1k 100k 1M
MAX6005
OUTPUT IMPEDANCE
vs. FREQUENCY
MAX6001-14
FREQUENCY (Hz)
OUTPUT IMPEDANCE (Ω)
0.1
1
10
100
1k
20
25
30
35
40
SUPPLY CURRENT
vs. TEMPERATURE
MAX6001-15
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
-40 20 40-20 0 60 80 100
VIN = 12.5V
VIN = 7.5V
VIN = 5.5V
VIN = 2.5V (MAX6001 ONLY)
V
OUT
20µV/div
1sec/div
MAX6005
0.1Hz TO 10Hz OUTPUT NOISE
MAX6001-17
V
IN
1V/div
V
OUT
1V/div
10µs/div
MAX6001
TURN-ON TRANSIENT
MAX6001-18
Typical Operating Characteristics (continued)
(VIN= +5V for MAX6001–MAX6004, VIN= +5.5V for MAX6005; I
OUT
= 0; TA= +25°C; unless otherwise noted.) (Note 6)
V
OUT
10µV/div
1sec/div
MAX6001
0.1Hz TO 10Hz OUTPUT NOISE
MAX6001-16
MAX6001–MAX6005
Low-Cost, Low-Power, Low-Dropout,
SOT23-3 Voltage References
_______________________________________________________________________________________
9
Typical Operating Characteristics (continued)
(VIN= +5V for MAX6001–MAX6004, VIN= +5.5V for MAX6005; I
OUT
= 0; TA= +25°C; unless otherwise noted.) (Note 6)
I
OUT
40µA/div
+25µA
-25µA
V
OUT
20mV/div
10µs/div
MAX6001
LOAD-TRANSIENT RESPONSE
MAX6001-19
I
OUT
= ±25µA, AC-COUPLED
I
OUT
50µA/div
V
OUT
50mV/div
20µs/div
MAX6005
LOAD-TRANSIENT RESPONSE
MAX6001-20
VIN = 5.5V, I
OUT
= ±25µA, AC-COUPLED
V
IN
2V/div
V
OUT
2V/div
10µs/div
MAX6005
TURN-ON TRANSIENT
MAX6001-21
+500µA
-500µA
V
OUT
0.2V/div
I
OUT
1mA/div
10µs/div
MAX6001
LOAD-TRANSIENT RESPONSE
MAX6001-22
I
OUT
= ±500µA, AC-COUPLED
V
IN
200mV/div
V
OUT
100mV/div
2µs/div
V
IN
= 5.5V ±0.25V, AC-COUPLED
MAX6005
LINE-TRANSIENT RESPONSE
MAX6001-25
I
OUT
500µA/div
V
OUT
200mV/div
20µs/div
MAX6005
LOAD-TRANSIENT RESPONSE
MAX6001-23
VIN = 5.5V, I
OUT
= ±500µA, AC-COUPLED
V
IN
200mV/div
V
OUT
100mV/div
2.5µs/div
V
IN
= 5V ±0.25V, AC-COUPLED
MAX6001
LINE-TRANSIENT RESPONSE
MAX6001-24
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.
MAX6001–MAX6005
Low-Cost, Low-Power, Low-Dropout,
SOT23-3 Voltage References
10 ______________________________________________________________________________________
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.
Applications Information
Output/Load Capacitance
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.
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.
Output Voltage Hysteresis
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.
Pin Description
NAME FUNCTION
1 IN Supply Voltage Input
2 OUT Reference Voltage Output
PIN
3 GND Ground
Figure 1. Positive and Negative References from Single +3V or +5V Supply
IN
V
S
+2V
S
-2V
S
OUT
+REF OUTPUT
OUTPUT
-REF OUTPUT
10nF
1M, 0.1%
1M, 0.1%
GND
MAX6001
MAX6002
MAX6003
MAX6004
MAX6005
V
CC
V+
GND
MAX681
V-
V+
V-
ICL7652
MAX6001–MAX6005
Low-Cost, Low-Power, Low-Dropout,
SOT23-3 Voltage References
______________________________________________________________________________________ 11
Chip Information
TRANSISTOR COUNT: 70
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.
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.
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.
12
____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 1999 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
Low-Cost, Low-Power, Low-Dropout,
SOT23-3 Voltage References
MAX6001–MAX6005
Package Information
SOTPO3L.EPS
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