19-4777; Rev 3; 4/01
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
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 temper-
ature range.
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 shunt-
mode (two-terminal) references that waste supply cur-
rent 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 vari-
ation 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 capac-
itance. 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.
o
0.2% (max) Initial Accuracy
o
15ppm/°C (max) Temperature Coefficient
o
35µA (max) Quiescent Supply Current
o
0.8µA/V Supply Current Variation with V
IN
o
±500µA Output Source and Sink Current
o
100mV Dropout at 500µA Load Current
o
0.12µV/µA Load Regulation
o
8µV/V Line Regulation
o
Stable with C
LOAD
= 0 to 2.2nF
Features
MAX6012/6021/6025/6030/6041/6045/6050
Ordering Information
PART
TEMP. RANGE
PIN-
PACKAGE
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
3 SOT23-3
3 SOT23-3
3 SOT23-3
3 SOT23-3
TOP
MARK
FZAP
FZDA
FZAU
FZDF
FZAQ
FZDB
FZDW
FZDX
FZAR
FZDC
FZAS
FZDD
FZAT
FZDE
MAX6012AEUR-T
-40°C to +85°C
MAX6012BEUR-T -40°C to +85°C
MAX6021AEUR-T
-40°C to +85°C
MAX6021BEUR-T -40°C to +85°C
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
Applications
Hand-Held Equipment
Data Acquisition Systems
Industrial and Process-Control Systems
Battery-Operated Equipment
Hard-Disk Drives
Selector Guide
PART
MAX6012
MAX6021
MAX6025
MAX6030
MAX6041
MAX6045
MAX6050
OUTPUT
VOLTAGE (V)
1.247
2.048
2.500
3.000
4.096
4.500
5.000
INPUT VOLTAGE (V)
2.5 to 12.6
2.5 to 12.6
(V
OUT
+ 200mV) to 12.6
(V
OUT
+ 200mV) to 12.6
(V
OUT
+ 200mV) to 12.6
(V
OUT
+ 200mV) to 12.6
(V
OUT
+ 200mV) to 12.6
*
Typical Operating Circuit
+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.
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
MAX6012/6021/6025/6030/6041/6045/6050
ABSOLUTE MAXIMUM RATINGS
(Voltages Referenced to GND)
IN .........................................................................-0.3V to +13.5V
OUT .............................................................-0.3V to (V
IN
+ 0.3V)
Output Short Circuit to GND or IN (V
IN
< 6V) ............Continuous
Output Short Circuit to GND or IN (V
IN
≥
6V) .........................60s
Continuous Power Dissipation (T
A
= +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
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
(V
IN
= +5V, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
OUTPUT
MAX6012A
Output Voltage
V
OUT
T
A
= +25°C
MAX6012B
T
A
= 0°C to +70°C
Output Voltage Temperature
Coefficient (Note 2)
V
OUT
T
A
= -40°C to +85°C
T
A
= 0°C to +70°C
T
A
= -40°C to +85°C
Line Regulation
Load Regulation
OUT Short-Circuit Current
Temperature Hysteresis
(Note 3)
Long-Term Stability
DYNAMIC
Noise Voltage
Ripple Rejection
Turn-On Settling Time
Capacitive-Load Stability Range
INPUT
Supply Voltage Range
Quiescent Supply Current
Change in Supply Current
V
IN
I
IN
I
IN
/V
IN
2.5V
≤
V
IN
≤
12.6V
Guaranteed by line-regulation test
2.5
27
0.8
12.6
35
2.0
V
µA
µA/V
e
OUT
∆V
OUT
/
∆V
IN
t
R
C
OUT
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
V
IN
= 5V ±100mV, f = 120Hz
To V
OUT
= 0.1% of final value, C
OUT
= 50pF
Note 4
0
12
65
86
30
2.2
µVp-p
µV
RMS
dB
µs
nF
∆V
OUT
/
time
1000hr at T
A
= +25°C
∆V
OUT
/
∆V
IN
∆V
OUT
/
∆I
OUT
I
SC
2.5V
≤
V
IN
≤
12.6V
Sourcing: 0
≤
I
OUT
≤
500µA
Sinking: -500µA
≤
I
OUT
≤
0
Short to GND
Short to IN
MAX6012A
MAX6012B
T
A
= 0°C to +70°C
1.243
-0.32
1.241
-0.48
6
6
6
6
8
0.12
0.15
4
4
130
50
1.247
1.247
1.251
0.32
1.253
0.48
15
20
25
30
80
0.50
0.60
µV/V
µV/µA
mA
ppm
ppm/
1000hr
ppm/°C
V
%
V
%
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
2
_______________________________________________________________________________________
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
ELECTRICAL CHARACTERISTICS—MAX6021
(V
IN
= +5V, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
OUTPUT
MAX6021A
Output Voltage
V
OUT
T
A
= +25°C
MAX6021B
T
A
= 0°C to +70°C
Output Voltage Temperature
Coefficient (Note 2)
V
OUT
T
A
= -40°C to +85°C
T
A
= 0°C to +70°C
T
A
= -40°C to +85°C
Line Regulation
Load Regulation
OUT Short-Circuit Current
Temperature Hysteresis
(Note 3)
Long-Term Stability
DYNAMIC
Noise Voltage
Ripple Rejection
Turn-On Settling Time
Capacitive-Load Stability Range
INPUT
Supply Voltage Range
Quiescent Supply Current
Change in Supply Current
V
IN
I
IN
I
IN
/V
IN
2.5V
≤
V
IN
≤
12.6V
Guaranteed by line-regulation test
2.5
27
0.8
12.6
35
2.0
V
µA
µA/V
e
OUT
∆V
OUT
/
∆V
IN
t
R
C
OUT
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
V
IN
= 5V ±100mV, f = 120Hz
To V
OUT
= 0.1% of final value, C
OUT
= 50pF
Note 4
0
35
105
84
70
2.2
µVp-p
µV
RMS
dB
µs
nF
∆V
OUT
/
time
1000hr at T
A
= +25°C
∆V
OUT
/
∆V
IN
∆V
OUT
/
∆I
OUT
I
SC
2.5V
≤
V
IN
≤
12.6V
Sourcing: 0
≤
I
OUT
≤
500µA
Sinking: -500µA
≤
I
OUT
≤
0
Short to GND
Short to IN
MAX6021A
MAX6021B
2.043
-0.24
2.040
-0.39
6
6
6
6
10
0.12
0.18
4
4
130
50
2.048
2.048
2.053
0.24
2.056
0.39
15
20
25
30
100
0.55
0.70
µV/V
µV/µA
mA
ppm
ppm/
1000hr
ppm/°C
V
%
V
%
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX6012/6021/6025/6030/6041/6045/6050
_______________________________________________________________________________________
3
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
MAX6012/6021/6025/6030/6041/6045/6050
ELECTRICAL CHARACTERISTICS—MAX6025
(V
IN
= +5V, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
OUTPUT
MAX6025A
Output Voltage
V
OUT
T
A
= +25°C
MAX6025B
T
A
= 0°C to +70°C
Output Voltage Temperature
Coefficient (Note 2)
V
OUT
T
A
= -40°C to +85°C
T
A
= 0°C to +70°C
T
A
= -40°C to +85°C
Line Regulation
Load Regulation
Dropout Voltage
(Note 5)
OUT Short-Circuit Current
Temperature Hysteresis
(Note 3)
Long-Term Stability
DYNAMIC
Noise Voltage
Ripple Rejection
Turn-On Settling Time
Capacitive-Load Stability Range
INPUT
Supply Voltage Range
Quiescent Supply Current
Change in Supply Current
V
IN
I
IN
I
IN
/V
IN
(V
OUT
+ 0.2V)
≤
V
IN
≤
12.6V
Guaranteed by line-regulation test
V
OUT
+ 0.2
27
0.8
12.6
35
2.0
V
µA
µA/V
e
OUT
∆V
OUT
/
∆V
IN
t
R
C
OUT
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
V
IN
= 5V ±100mV, f = 120Hz
To V
OUT
= 0.1% of final value, C
OUT
= 50pF
Note 4
0
50
125
82
85
2.2
µVp-p
µV
RMS
dB
µs
nF
∆V
OUT
/
∆V
IN
∆V
OUT
/
∆I
OUT
V
IN
-
V
OUT
I
SC
∆V
OUT
/
time
∆V
OUT
/
time
1000hr at T
A
= +25°C
MAX6025A
MAX6025B
2.495
-0.20
2.490
-0.40
6
6
6
6
15
0.14
0.18
100
4
4
130
50
2.500
2.500
2.505
0.20
2.510
0.40
15
20
25
30
140
0.60
0.80
200
µV/V
µV/µA
mV
mA
ppm
ppm/
1000hr
ppm/°C
V
%
V
%
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
(V
OUT
+ 0.2V)
≤
V
IN
≤
12.6V
Sourcing: 0
≤
I
OUT
≤
500µA
Sinking: -500µA
≤
I
OUT
≤
0
I
OUT
= 500µA
Short to GND
Short to IN
4
_______________________________________________________________________________________
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
ELECTRICAL CHARACTERISTICS—MAX6030
(V
IN
= +5V, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
OUTPUT
MAX6030A
Output Voltage
V
OUT
T
A
= +25°C
MAX6030B
T
A
= 0°C to +70°C
Output Voltage Temperature
Coefficient (Note 2)
V
OUT
T
A
= -40°C to +85°C
T
A
= 0°C to +70°C
T
A
= -40°C to +85°C
Line Regulation
Load Regulation
Dropout Voltage
(Note 5)
OUT Short-Circuit Current
Temperature Hysteresis
(Note 3)
Long-Term Stability
DYNAMIC
Noise Voltage
Ripple Rejection
Turn-On Settling Time
Capacitive-Load Stability Range
INPUT
Supply Voltage Range
Quiescent Supply Current
Change in Supply Current
V
IN
I
IN
I
IN
/V
IN
(V
OUT
+ 0.2V)
≤
V
IN
≤
12.6V
Guaranteed by line-regulation test
V
OUT
+ 0.2
27
0.8
12.6
35
2.0
V
µA
µA/V
e
OUT
∆V
OUT
/
∆V
IN
t
R
C
OUT
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
V
IN
= 5V ±100mV, f = 120Hz
To V
OUT
= 0.1% of final value, C
OUT
= 50pF
Note 4
0
65
150
80
100
2.2
µVp-p
µV
RMS
dB
µs
nF
∆V
OUT
/
time
1000hr at T
A
= +25°C
∆V
OUT
/
∆V
IN
∆V
OUT
/
∆I
OUT
V
IN
-
V
OUT
I
SC
MAX6030A
MAX6030B
2.994
-0.20
2.988
-0.40
6
6
6
6
20
0.14
0.18
100
4
4
130
50
3.000
3.000
3.006
0.20
3.012
0.40
15
20
25
30
150
0.60
0.80
200
µV/V
µV/µA
mV
mA
ppm
ppm/
1000hr
ppm/°C
V
%
V
%
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX6012/6021/6025/6030/6041/6045/6050
(V
OUT
) +0.2V)
≤
V
IN
≤
12.6V
Sourcing: 0
≤
I
OUT
≤
500µA
Sinking: -500µA
≤
I
OUT
≤
0
I
OUT
= 500µA
Short to GND
Short to IN
_______________________________________________________________________________________
5
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