Maxim MAX6012-MAX6050 Precision, low-power, low-dropout, Datasheet

19-4777; Rev 3; 4/01
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
Features
♦ 0.2% (max) Initial Accuracy
These series-mode voltage references draw only 27µA
of quiescent supply current and can sink or source up
to 500µA of load current. Unlike conventional shuntmode (two-terminal) references that waste supply current and require an external resistor, devices in the
MAX6012 family offer a supply current that’s virtually
independent of supply voltage (with only a 0.8µA/V variation with supply voltage) and do not require an external
resistor. Additionally, these internally compensated
devices do not require an external compensation
capacitor and are stable with up to 2.2nF of load capacitance. Eliminating the external compensation capacitor
saves valuable board area in space-critical applications.
Their low dropout voltage and supply-independent,
ultra-low supply current make these devices ideal for
battery-operated, low-voltage systems.
♦ 0.12µV/µA Load Regulation
Applications
Hand-Held Equipment
Data Acquisition Systems
Industrial and Process-Control Systems
Battery-Operated Equipment
Hard-Disk Drives
♦ 15ppm/°C (max) Temperature Coefficient
♦ 35µA (max) Quiescent Supply Current
♦ 0.8µA/V Supply Current Variation with VIN
♦ ±500µA Output Source and Sink Current
♦ 100mV Dropout at 500µA Load Current
♦ 8µV/V Line Regulation
♦ Stable with CLOAD = 0 to 2.2nF
Ordering Information
TEMP. RANGE
PINPACKAGE
MAX6012AEUR-T -40°C to +85°C
3 SOT23-3
FZAP
MAX6012BEUR-T -40°C to +85°C
MAX6021AEUR-T -40°C to +85°C
MAX6021BEUR-T -40°C to +85°C
3 SOT23-3
3 SOT23-3
3 SOT23-3
FZDA
FZAU
FZDF
MAX6025AEUR-T -40°C to +85°C
MAX6025BEUR-T -40°C to +85°C
MAX6030AEUR-T -40°C to +85°C
MAX6030BEUR-T -40°C to +85°C
MAX6041AEUR-T -40°C to +85°C
MAX6041BEUR-T -40°C to +85°C
MAX6045AEUR-T -40°C to +85°C
MAX6045BEUR-T -40°C to +85°C
MAX6050AEUR-T -40°C to +85°C
MAX6050BEUR-T -40°C to +85°C
3 SOT23-3
3 SOT23-3
3 SOT23-3
3 SOT23-3
3 SOT23-3
3 SOT23-3
3 SOT23-3
3 SOT23-3
3 SOT23-3
3 SOT23-3
FZAQ
FZDB
FZDW
FZDX
FZAR
FZDC
FZAS
FZDD
FZAT
FZDE
PART
Typical Operating Circuit
Selector Guide
PART
OUTPUT
VOLTAGE (V)
INPUT VOLTAGE (V)
MAX6012
1.247
2.5 to 12.6
MAX6021
2.048
2.5 to 12.6
MAX6025
2.500
(VOUT + 200mV) to 12.6
MAX6030
3.000
(VOUT + 200mV) to 12.6
MAX6041
4.096
(VOUT + 200mV) to 12.6
MAX6045
4.500
(VOUT + 200mV) to 12.6
MAX6050
5.000
(VOUT + 200mV) to 12.6
TOP
MARK
+SUPPLY INPUT (SEE SELECTOR GUIDE)
IN
OUT
*
MAX6012
MAX6021
MAX6025
MAX6030
MAX6041
MAX6045
MAX6050
GND
REFERENCE
OUT
2.2nF MAX*
Pin Configuration appears at end of data sheet.
*CAPACITORS ARE OPTIONAL
________________________________________________________________ Maxim Integrated Products
1
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
MAX6012/6021/6025/6030/6041/6045/6050
General Description
The MAX6012/MAX6021/MAX6025/MAX6030/MAX6041/
MAX6045/MAX6050 precision, low-dropout, micropower
voltage references are available in miniature SOT23-3
surface-mount packages. They feature a proprietary
curvature-correction circuit and laser-trimmed thin-film
resistors that result in a low temperature coefficient of
<15ppm/°C and initial accuracy of better than 0.2%.
These devices are specified over the extended temperature range.
MAX6012/6021/6025/6030/6041/6045/6050
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
ABSOLUTE MAXIMUM RATINGS
Continuous Power Dissipation (TA = +70°C)
3-Pin 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, 10s) .................................+300°C
(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) .........................60s
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—MAX6012
(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
1.243
1.247
1.251
V
0.32
%
1.253
V
0.48
%
OUTPUT
MAX6012A
Output Voltage
VOUT
TA = +25°C
MAX6012B
TA = 0°C to +70°C
Output Voltage Temperature
Coefficient (Note 2)
VOUT
∆VOUT/
∆VIN
Load Regulation
∆VOUT/
∆IOUT
OUT Short-Circuit Current
ISC
1.241
-0.48
15
6
20
6
25
6
30
8
80
Sourcing: 0 ≤ IOUT ≤ 500µA
0.12
0.50
Sinking: -500µA ≤ IOUT ≤ 0
0.15
0.60
TA = -40°C to +85°C
TA = 0°C to +70°C
MAX6012A
MAX6012B
TA = 0°C to +70°C
2.5V ≤ VIN ≤ 12.6V
Short to GND
4
Short to IN
4
Temperature Hysteresis
(Note 3)
Long-Term Stability
∆VOUT/
time
1.247
6
TA = -40°C to +85°C
Line Regulation
-0.32
ppm/°C
µV/V
µV/µA
mA
130
ppm
1000hr at TA = +25°C
50
ppm/
1000hr
f = 0.1Hz to 10Hz
12
µVp-p
f = 10Hz to 10kHz
65
µVRMS
VIN = 5V ±100mV, f = 120Hz
86
dB
To VOUT = 0.1% of final value, COUT = 50pF
30
µs
DYNAMIC
Noise Voltage
Ripple Rejection
Turn-On Settling Time
Capacitive-Load Stability Range
eOUT
∆VOUT/
∆VIN
tR
COUT
Note 4
0
2.2
nF
2.5
12.6
V
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
27
35
µA
0.8
2.0
µA/V
_______________________________________________________________________________________
Precision, 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
2.043
2.048
2.053
V
0.24
%
2.048
2.056
V
0.39
%
OUTPUT
MAX6021A
Output Voltage
VOUT
TA = +25°C
MAX6021B
TA = 0°C to +70°C
Output Voltage Temperature
Coefficient (Note 2)
VOUT
∆VOUT/
∆VIN
Load Regulation
∆VOUT/
∆IOUT
OUT Short-Circuit Current
ISC
-0.39
6
15
6
20
6
25
6
30
10
100
Sourcing: 0 ≤ IOUT ≤ 500µA
0.12
0.55
Sinking: -500µA ≤ IOUT ≤ 0
0.18
0.70
TA = -40°C to +85°C
TA = 0°C to +70°C
TA = -40°C to +85°C
Line Regulation
-0.24
2.040
MAX6021A
MAX6021B
2.5V ≤ VIN ≤ 12.6V
Short to GND
4
Short to IN
4
Temperature Hysteresis
(Note 3)
∆VOUT/
time
Long-Term Stability
1000hr at TA = +25°C
ppm/°C
µV/V
µV/µA
mA
130
ppm
50
ppm/
1000hr
DYNAMIC
Noise Voltage
eOUT
∆VOUT/
∆VIN
Ripple Rejection
Turn-On Settling Time
Capacitive-Load Stability Range
tR
COUT
f = 0.1Hz to 10Hz
35
µVp-p
f = 10Hz to 10kHz
105
µVRMS
VIN = 5V ±100mV, f = 120Hz
84
dB
To VOUT = 0.1% of final value, COUT = 50pF
Note 4
70
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
2.5V ≤ VIN ≤ 12.6V
2.5
12.6
V
27
35
µA
0.8
2.0
µA/V
_______________________________________________________________________________________
3
MAX6012/6021/6025/6030/6041/6045/6050
ELECTRICAL CHARACTERISTICS—MAX6021
MAX6012/6021/6025/6030/6041/6045/6050
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
ELECTRICAL CHARACTERISTICS—MAX6025
(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
2.495
2.500
2.505
V
0.20
%
2.500
2.510
V
0.40
%
OUTPUT
MAX6025A
Output Voltage
VOUT
TA = +25°C
MAX6025B
TA = 0°C to +70°C
Output Voltage Temperature
Coefficient (Note 2)
VOUT
∆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
-0.40
6
15
6
20
6
25
6
30
(VOUT + 0.2V) ≤ VIN ≤ 12.6V
15
140
Sourcing: 0 ≤ IOUT ≤ 500µA
0.14
0.60
Sinking: -500µA ≤ IOUT ≤ 0
0.18
0.80
IOUT = 500µA
100
200
Short to GND
4
Short to IN
4
TA = -40°C to +85°C
TA = 0°C to +70°C
TA = -40°C to +85°C
Line Regulation
-0.20
2.490
MAX6025A
MAX6025B
1000hr at TA = +25°C
ppm/°C
µV/V
µV/µA
mV
mA
130
ppm
50
ppm/
1000hr
DYNAMIC
Noise Voltage
Ripple Rejection
Turn-On Settling Time
Capacitive-Load Stability Range
eOUT
∆VOUT/
∆VIN
tR
COUT
f = 0.1Hz to 10Hz
50
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
4
Guaranteed by line-regulation test
(VOUT + 0.2V) ≤ VIN ≤ 12.6V
VOUT + 0.2
12.6
V
27
35
µA
0.8
2.0
µA/V
_______________________________________________________________________________________
Precision, 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
2.994
3.000
3.006
V
0.20
%
3.000
3.012
V
0.40
%
OUTPUT
MAX6030A
Output Voltage
VOUT
TA = +25°C
MAX6030B
TA = 0°C to +70°C
Output Voltage Temperature
Coefficient (Note 2)
VOUT
∆VOUT/
∆VIN
Load Regulation
∆VOUT/
∆IOUT
Dropout Voltage
(Note 5)
VIN VOUT
OUT Short-Circuit Current
ISC
-0.40
6
15
6
20
6
25
6
30
(VOUT) +0.2V) ≤ VIN ≤ 12.6V
20
150
Sourcing: 0 ≤ IOUT ≤ 500µA
0.14
0.60
Sinking: -500µA ≤ IOUT ≤ 0
0.18
0.80
IOUT = 500µA
100
200
Short to GND
4
Short to IN
4
TA = -40°C to +85°C
TA = 0°C to +70°C
TA = -40°C to +85°C
Line Regulation
-0.20
2.988
MAX6030A
MAX6030B
Temperature Hysteresis
(Note 3)
∆VOUT/
time
Long-Term Stability
ppm/°C
µV/V
µV/µA
mV
mA
130
ppm
1000hr at TA = +25°C
50
ppm/
1000hr
f = 0.1Hz to 10Hz
65
µVp-p
f = 10Hz to 10kHz
150
µVRMS
VIN = 5V ±100mV, f = 120Hz
80
dB
To VOUT = 0.1% of final value, COUT = 50pF
100
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
35
µA
0.8
2.0
µA/V
_______________________________________________________________________________________
5
MAX6012/6021/6025/6030/6041/6045/6050
ELECTRICAL CHARACTERISTICS—MAX6030
MAX6012/6021/6025/6030/6041/6045/6050
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
ELECTRICAL CHARACTERISTICS—MAX6041
(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
4.088
4.096
4.104
V
0.20
%
4.096
4.112
V
0.39
%
OUTPUT
OUTPUT
MAX6041A
Output Voltage
VOUT
TA = +25°C
MAX6041B
TA = 0°C to +70°C
Output Voltage Temperature
Coefficient (Note 2)
VOUT
∆VOUT/
∆VIN
Load Regulation
∆VOUT/
∆IOUT
Dropout Voltage
(Note 5)
VIN VOUT
OUT Short-Circuit Current
ISC
-0.39
6
15
6
20
6
25
6
30
(VOUT + 0.2V) ≤ VIN ≤ 12.6V
25
160
Sourcing: 0 ≤ IOUT ≤ 500µA
0.15
0.70
Sinking: -500µA ≤ IOUT ≤ 0
0.20
0.90
IOUT = 500µA
100
200
Short to GND
4
Short to IN
4
TA = -40°C to +85°C
TA = 0°C to +70°C
TA = -40°C to +85°C
Line Regulation
-0.20
4.080
MAX6041A
MAX6041B
ppm/°C
µV/V
µV/µA
mV
mA
Temperature Hysteresis
(Note 3)
∆VOUT/
time
1000hr at TA = +25°C
130
ppm
Long-Term Stability
∆VOUT/
time
1000hr at TA = +25°C
50
ppm/
1000hr
f = 0.1 Hz to 10Hz
100
µVp-p
f = 10Hz to 10kHz
200
µVRMS
VIN = 5V ± 100mV, f = 120Hz
77
dB
DYNAMIC
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
160
0
µs
2.2
nF
INPUT
INPUT
Supply Voltage Range
VIN
Quiescent Supply Current
IIN
Change in Supply Current
IIN/VIN
6
Guaranteed by line-regulation test
(VOUT + 0.2V) ≤ VIN ≤ 12.6V
VOUT + 0.2
12.6
V
27
35
µA
0.8
2.0
µA/V
_______________________________________________________________________________________
Precision, 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
4.491
4.500
4.509
V
0.20
%
OUTPUT
MAX6045A
Output Voltage
VOUT
TA = +25°C
MAX6045B
TA = 0°C to +70°C
Output Voltage Temperature
Coefficient (Note 2)
VOUT
∆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
4.482
4.500
-0.40
4.518
V
0.40
%
6
15
6
20
6
25
6
30
(VOUT + 0.2V) ≤ VIN ≤ 12.6V
25
160
Sourcing: 0 ≤ IOUT ≤ 500µA
0.16
0.80
Sinking: -500µA ≤ IOUT ≤ 0
0.22
1.00
IOUT = 500µA
100
200
Short to GND
4
Short to IN
4
TA = -40°C to +85°C
TA = 0°C to +70°C
TA = -40°C to +85°C
Line Regulation
-0.20
MAX6045A
MAX6045B
ppm/°C
µV/V
µV/µA
mV
mA
130
ppm
1000hr at TA = +25°C
50
ppm/
1000hr
f = 0.1Hz to 10Hz
110
µVp-p
f = 10Hz to 10kHz
215
µVRMS
VIN = 5V ±100mV, f = 120Hz
76
dB
DYNAMIC
Noise Voltage
eOUT
∆VOUT/
∆VIN
Ripple Rejection
Turn-On Settling Time
Capacitive-Load Stability Range
tR
COUT
To VOUT = 0.1% of final value, COUT = 50pF
Note 4
180
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
35
µA
0.8
2.0
µA/V
_______________________________________________________________________________________
7
MAX6012/6021/6025/6030/6041/6045/6050
ELECTRICAL CHARACTERISTICS—MAX6045
MAX6012/6021/6025/6030/6041/6045/6050
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
ELECTRICAL CHARACTERISTICS—MAX6050
(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
4.990
5.000
5.010
V
0.20
%
OUTPUT
MAX6050A
Output Voltage
VOUT
TA = +25°C
MAX6050B
TA = 0°C to +70°C
Output Voltage Temperature
Coefficient (Note 2)
TCVOUT
∆VOUT/
∆VIN
Load Regulation
∆VOUT/
∆IOUT
Dropout Voltage
(Note 5)
VIN VOUT
OUT Short-Circuit Current
ISC
4.980
5.000
-0.40
∆VOUT/
time
V
0.40
%
15
6
20
6
25
6
30
(VOUT + 0.2V) ≤ VIN ≤ 12.6V
25
160
Sourcing: 0 ≤ IOUT ≤ 500µA
0.17
0.85
Sinking: -500µA ≤ IOUT ≤ 0
0.24
1.10
IOUT = 500µA
100
200
Short to GND
4
Short to IN
4
TA = -40°C to +85°C
TA = 0°C to +70°C
MAX6050A
MAX6050B
Temperature Hysteresis
(Note 3)
Long-Term Stability
5.020
6
TA = -40°C to +85°C
Line Regulation
-0.20
ppm/°C
µV/V
µV/µA
mV
mA
130
ppm
1000hr at TA = +25°C
50
ppm/
1000hr
f = 0.1 Hz to 10Hz
120
µVp-p
f =10Hz to 10kHz
240
µVRMS
VIN = 5V ±100mV, f = 120Hz
72
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
220
0
µs
2.2
nF
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:
8
Guaranteed by line-regulation test
(VOUT + 0.2V) ≤ VIN ≤ 12.6V
VOUT + 0.2
12.6
V
27
35
µA
0.8
2.0
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.
Temperature 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 MAX6050).
_______________________________________________________________________________________
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
MAX6050
OUTPUT VOLTAGE
TEMPERATURE DRIFT
5.002
OUTPUT VOLTAGE (V)
1.2490
4.996
4.994
1.2485
4.992
1.2480
4.990
-20
0
20
40
60
80
THREE
TYPICAL PARTS
4.988
4.986
-40
100
TEMPERATURE DRIFT (°C)
0
TA = +85°C
200
TA = -40°C
100
0
TA = +25°C
20
40
60
80
4.996
100
0 100 200 300 400 500 600 700 800 900 1000
TEMPERATURE DRIFT (°C)
TIME (h)
MAX6050
LINE REGULATION
MAX6025/MAX6030
DROPOUT VOLTAGE vs.
SOURCE CURRENT
800
OUTPUT VOLTAGE CHANGE (µV)
MAX6012-04
300
4.997
4.993
-20
MAX6012
LINE REGULATION
400
4.998
4.994
TA = +85°C
0.8
0.7
600
DROPOUT VOLTAGE (V)
1.2470
-40
4.999
4.995
MAX6012-05
THREE
TYPICAL PARTS
1.2475
5.000
MAX6012-06
VOUT (V)
VOUT (V)
5.001
4.998
1.2495
THREE
TYPICAL PARTS
5.002
5.000
1.2500
OUTPUT VOLTAGE CHANGE (µV)
5.003
TA = -40°C
400
200
TA = +25°C
0.6
0.5
TA = -40°C
0.4
0.3
TA = +85°C
0.2
0
0.1
-100
-200
6
8
10
12
7
9
11
13
0
200
400
600
800
INPUT VOLTAGE (V)
SOURCE CURRENT (µA)
MAX6012
LOAD REGULATION
MAX6050
LOAD REGULATION
MAX6041/MAX6045/MAX6050
DROPOUT VOLTAGE vs.
SOURCE CURRENT
0.2
TA = -40°C
0
TA = +85°C
TA = +25°C
-0.2
0.400
0.200
TA = -40°C
0
-0.200
0.30
TA = +25°C
TA = -40°C
0.25
DROPOUT VOLTAGE (V)
MAX6012-07
0.4
OUTPUT VOLTAGE CHANGE (mV)
5
14
INPUT VOLTAGE (V)
MAX6012-08
4
OUTPUT VOLTAGE CHANGE (mV)
2
TA = +25°C
0
0.20
1000
MAX6012-09
1.2505
MAX6012-02
5.004
MAX6012-01
1.2510
MAX6050
LONG-TERM DRIFT
MAX6012-03
MAX6012
OUTPUT VOLTAGE
TEMPERATURE DRIFT
TA = +85°C
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
1000
SOURCE CURRENT (µA)
_______________________________________________________________________________________
9
MAX6012/6021/6025/6030/6041/6045/6050
Typical Operating Characteristics
(VIN = +5V for MAX6012/21/25/30/41/45, VIN = +5.5V for MAX6050; IOUT = 0; TA = +25°C; unless otherwise noted.) (Note 6)
Typical Operating Characteristics (continued)
(VIN = +5V for MAX6012/21/25/30/41/45, VIN = +5.5V for MAX6050; 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
MAX16012-11
100
MAX6012-10
100
MAX6050
POWER-SUPPLY REJECTION
vs. FREQUENCY
MAX6012-12
MAX6012
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)
MAX6012
OUTPUT IMPEDANCE
vs. FREQUENCY
MAX6050
OUTPUT IMPEDANCE
vs. FREQUENCY
SUPPLY CURRENT
vs. TEMPERATURE
10
1
40
100
SUPPLY CURRENT (µA)
OUTPUT IMPEDANCE (Ω)
100
10
12
14
MAX6012-15
1k
MAX6012-13
1k
MAX6012-14
100
OUTPUT IMPEDANCE (Ω)
35
VIN = 12.5V
VIN = 7.5V
30
VIN = 5.5V
25
1
VIN = 2.5V (MAX6012/MAX6025 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
MAX6012
0.1Hz TO 10Hz OUTPUT NOISE
MAX6050
0.1Hz TO 10Hz OUTPUT NOISE
MAX6012
TURN-ON TRANSIENT
VIN
1V/div
VOUT
20µV/div
VOUT
1V/div
1sec/div
1sec/div
80
100
MAX6012-18
TEMPERATURE (°C)
MAX6012-17
FREQUENCY (Hz)
VOUT
10µV/div
10
60
FREQUENCY (Hz)
MAX6012-16
MAX6012/6021/6025/6030/6041/6045/6050
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
10µs/div
______________________________________________________________________________________
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
MAX6012
LOAD-TRANSIENT RESPONSE
MAX6050
LOAD-TRANSIENT RESPONSE
MAX6050
TURN-ON TRANSIENT
+25µA
IOUT
40µA/div
-25µA
IOUT
50µA/div
VIN
2V/div
VOUT
50mV/div
VOUT
20mV/div
10µs/div
IOUT = ±25µA, AC-COUPLED
MAX6012-21
MAX6012-20
MAX6012-19
VOUT
2V/div
10µs/div
20µs/div
VIN = 5.5V, IOUT = ±25µA, AC-COUPLED
MAX6050
LOAD-TRANSIENT RESPONSE
MAX6012
LOAD-TRANSIENT RESPONSE
MAX6012
LINE-TRANSIENT RESPONSE
+500µA
IOUT
-500µA 500µA/div
IOUT
1mA/div
MAX6012-24
MAX6012-23
MAX6012-22
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
MAX6012-25
MAX6050
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 MAX6012 family are
extremely similar. The extremes of these characteristics are found in the
MAX6012 (1.2V output) and the MAX6050 (5.0V output). The Typical
Operating Characteristics of the remainder of the MAX6012 family typically
lie between these two extremes and can be estimated based on their output
voltage.
______________________________________________________________________________________
11
MAX6012/6021/6025/6030/6041/6045/6050
Typical Operating Characteristics (continued)
(VIN = +5V for MAX6012/21/25/30/41/45, VIN = +5.5V for MAX6050; IOUT = 0; TA = +25°C; unless otherwise noted.) (Note 6)
MAX6012/6021/6025/6030/6041/6045/6050
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
Pin Description
PIN
NAME
FUNCTION
1
IN
2
OUT
Supply Voltage Input
Reference Voltage Output
3
GND
Ground
Detailed Description
The MAX6012/MAX6021/MAX6025/MAX6030/MAX6041/
MAX6045/MAX6050 precision bandgap references use
a proprietary curvature-correction circuit and lasertrimmed thin-film resistors, resulting in a low temperature coefficient of <20ppm/°C and initial accuracy of
better than 0.2%. These devices can sink and source
up to 500µA 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 35µA and is virtually independent of the supply voltage, with only a 0.8µA/V variation
with supply voltage. Unlike series references, shuntmode references operate with a series resistor connected to the power supply. The quiescent current of a
shunt-mode reference is thus a function of the input
voltage. Additionally, shunt-mode references have to
be biased at the maximum expected load current, even
if the load current is not present all the time. The load
current is drawn from the input voltage only when
required, so supply current is not wasted and efficiency
is maximized at all input voltages. 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.
VS
VCC
+2VS
V+
IN
MAX681
GND
V-
MAX6012
MAX6021
MAX6025
MAX6030
MAX6041
MAX6045
MAX6050
+REF OUTPUT
OUT
1MΩ
0.1%
V+
OUTPUT
GND
-2VS
ICL7652
1MΩ
0.1%
V10nF
Figure 1. Positive and Negative References from Single +3V or +5V Supply
12
______________________________________________________________________________________
-REF OUTPUT
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
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.
Pin Configuration
TOP VIEW
IN 1
OUT 2
MAX6012
MAX6021
MAX6025
MAX6030
MAX6041
MAX6045
MAX6050
3
GND
SOT23-3
Chip Information
TRANSISTOR COUNT: 70
______________________________________________________________________________________
13
MAX6012/6021/6025/6030/6041/6045/6050
Turn-On Time
These devices typically turn on and settle to within
0.1% of their final value; 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.
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
SOTPO3L.EPS
MAX6012/6021/6025/6030/6041/6045/6050
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.
14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2001 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.