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 27A
of quiescent supply current and can sink or source up
to 500A 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 0.8A/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.
Applications
Hand-Held Equipment
Data Acquisition Systems
Industrial and Process-Control Systems
Battery-Operated Equipment
Hard-Disk Drives
Features
o 0.2% (max) Initial Accuracy
o 15ppm/C (max) Temperature Coefficient
o 35A (max) Quiescent Supply Current
o 0.8A/V Supply Current Variation with V
IN
o 500A Output Source and Sink Current
o 100mV Dropout at 500A Load Current
o 0.12V/A Load Regulation
o 8V/V Line Regulation
o Stable with C
LOAD
= 0 to 2.2nF
MAX6012/6021/6025/6030/6041/6045/6050
Precision, 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
MAX6012
MAX6021
MAX6025
MAX6030
MAX6041
MAX6045
MAX6050
*
Typical Operating Circuit
19-4777; Rev 3; 4/01
PART
MAX6012AEUR-T
MAX6012BEUR-T
MAX6021AEUR-T -40C to +85C
-40C to +85C
-40C to +85C
TEMP. RANGE
PIN-
PACKAGE
3 SOT23-3
3 SOT23-3
3 SOT23-3
Ordering Information
TOP
MARK
FZAP
FZDA
FZAU
MAX6021BEUR-T
MAX6025AEUR-T
MAX6025BEUR-T
-40C to +85C
-40C to +85C
-40C to +85C
3 SOT23-3
3 SOT23-3
3 SOT23-3
FZDF
FZAQ
FZDB
MAX6041AEUR-T
MAX6041BEUR-T
-40C to +85C
-40C to +85C
3 SOT23-3
3 SOT23-3
FZAR
FZDC
Pin Configuration appears at end of data sheet.
(V
OUT
+ 200mV) to 12.6
5.000
MAX6050
(V
OUT
+ 200mV) to 12.6
4.500
(V
OUT
+ 200mV) to 12.6
4.096
MAX6041
MAX6045
(V
OUT
+ 200mV) to 12.6
2.500
MAX6025
2.5 to 12.6
2.048
2.5 to 12.6
1.247
MAX6012
MAX6021
INPUT VOLTAGE (V)
OUTPUT
VOLTAGE (V)
PART
Selector Guide
MAX6045AEUR-T -40C to +85C
3 SOT23-3
FZAS
MAX6045BEUR-T
-40C to +85C
3 SOT23-3
FZDD
MAX6050AEUR-T -40C to +85C
3 SOT23-3
FZAT
MAX6050BEUR-T
-40C to +85C
3 SOT23-3
FZDE
MAX6030AEUR-T -40C to +85C
3 SOT23-3
FZDW
MAX6030BEUR-T
-40C to +85C
3 SOT23-3
FZDX
(V
OUT
+ 200mV) to 12.6
3.000
MAX6030
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.
T
A
= 0C to +70C
MAX6012/6021/6025/6030/6041/6045/6050
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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
= +25C.) (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 (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
= +70C)
3-Pin SOT23-3 (derate 4.0mW/C above +70C) ........320mW
Operating Temperature Range ...........................-40C to +85C
Storage Temperature Range .............................-65C to +150C
Lead Temperature (soldering, 10s) .................................+300C
2.5V
V
IN
12.6V
Guaranteed by line-regulation test
T
A
= +25C
Note 4
To V
OUT
= 0.1% of final value, C
OUT
= 50pF
V
IN
= 5V 100mV, f = 120Hz
Short to IN
f = 10Hz to 10kHz
f = 0.1Hz to 10Hz
Short to GND
Sinking: -500A
I
OUT
0
T
A
= 0C to +70C
T
A
= 0C to +70C
2.5V
V
IN
12.6V
Sourcing: 0
I
OUT
500A
1000hr at T
A
= +25C
CONDITIONS
A/V
0.8
2.0
I
IN
/V
IN
Change in Supply Current
A
27
35
I
IN
Quiescent Supply Current
V
2.5
12.6
V
IN
Supply Voltage Range
nF
0
2.2
C
OUT
Capacitive-Load Stability Range
s
30
t
R
Turn-On Settling Time
dB
86
V
OUT
/
V
IN
Ripple Rejection
V
RMS
65
Vp-p
12
e
OUT
Noise Voltage
ppm/
1000hr
50
V
OUT
/
time
Long-Term Stability
1.241
1.247
1.253
V
1.243
1.247
1.251
V
OUT
Output Voltage
ppm
130
Temperature Hysteresis
(Note 3)
4
mA
4
I
SC
OUT Short-Circuit Current
0.15
0.60
6
15
6
25
V/V
8
80
V
OUT
/
V
IN
Line Regulation
0.12
0.50
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
MAX6012A
MAX6012B
ppm/C
V
OUT
Output Voltage Temperature
Coefficient (Note 2)
V
OUT
/
I
OUT
Load Regulation
V/A
-0.32
0.32
-0.48
0.48
T
A
= -40C to +85C
T
A
= -40C to +85C
MAX6012A
MAX6012B
6
20
6
30
%
V
%
OUTPUT
DYNAMIC
INPUT
MAX6012/6021/6025/6030/6041/6045/6050
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
_______________________________________________________________________________________
3
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
= +25C.) (Note 1)
2.5V
V
IN
12.6V
Guaranteed by line-regulation test
T
A
= +25C
Note 4
To V
OUT
= 0.1% of final value, C
OUT
= 50pF
V
IN
= 5V 100mV, f = 120Hz
Short to IN
f = 10Hz to 10kHz
f = 0.1Hz to 10Hz
Short to GND
Sinking: -500A
I
OUT
0
T
A
= 0C to +70C
T
A
= 0C to +70C
2.5V
V
IN
12.6V
Sourcing: 0
I
OUT
500A
1000hr at T
A
= +25C
CONDITIONS
A/V
0.8
2.0
I
IN
/V
IN
Change in Supply Current
A
27
35
I
IN
Quiescent Supply Current
V
2.5
12.6
V
IN
Supply Voltage Range
nF
0
2.2
C
OUT
Capacitive-Load Stability Range
s
70
t
R
Turn-On Settling Time
dB
84
V
OUT
/
V
IN
Ripple Rejection
V
RMS
105
Vp-p
35
e
OUT
Noise Voltage
ppm/
1000hr
50
V
OUT
/
time
Long-Term Stability
2.040
2.048
2.056
V
2.043
2.048
2.053
V
OUT
Output Voltage
ppm
130
Temperature Hysteresis
(Note 3)
4
mA
4
I
SC
OUT Short-Circuit Current
0.18
0.70
6
15
6
25
V/V
10
100
V
OUT
/
V
IN
Line Regulation
0.12
0.55
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
MAX6021A
MAX6021B
V
OUT
Output Voltage Temperature
Coefficient (Note 2)
ppm/C
V
OUT
/
I
OUT
Load Regulation
V/A
MAX6021A
MAX6021B
-0.24
0.24
-0.39
0.39
T
A
= -40C to +85C
T
A
= -40C to +85C
6
20
6
30
V
%
%
OUTPUT
DYNAMIC
INPUT
MAX6012/6021/6025/6030/6041/6045/6050
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
4
_______________________________________________________________________________________
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
= +25C.) (Note 1)
(V
OUT
+ 0.2V)
V
IN
12.6V
Guaranteed by line-regulation test
T
A
= +25C
Note 4
To V
OUT
= 0.1% of final value, C
OUT
= 50pF
V
IN
= 5V 100mV, f = 120Hz
f = 10Hz to 10kHz
Short to IN
Short to GND
f = 0.1Hz to 10Hz
I
OUT
= 500A
Sinking: -500A
I
OUT
0
T
A
= 0C to +70C
T
A
= 0C to +70C
(V
OUT
+ 0.2V)
V
IN
12.6V
1000hr at T
A
= +25C
Sourcing: 0
I
OUT
500A
CONDITIONS
A/V
0.8
2.0
I
IN
/V
IN
Change in Supply Current
A
27
35
I
IN
Quiescent Supply Current
V
V
OUT
+ 0.2
12.6
V
IN
Supply Voltage Range
nF
0
2.2
C
OUT
Capacitive-Load Stability Range
s
85
t
R
Turn-On Settling Time
dB
82
V
OUT
/
V
IN
Ripple Rejection
V
RMS
125
Vp-p
50
e
OUT
Noise Voltage
ppm/
1000hr
50
V
OUT
/
time
Long-Term Stability
ppm
130
V
OUT
/
time
Temperature Hysteresis
(Note 3)
2.490
2.500
2.510
V
2.495
2.500
2.505
V
OUT
Output Voltage
4
mA
4
I
SC
OUT Short-Circuit Current
mV
100
200
V
IN
-
V
OUT
Dropout Voltage
(Note 5)
0.18
0.80
6
15
6
25
V/V
15
140
V
OUT
/
V
IN
Line Regulation
0.14
0.60
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
MAX6025A
MAX6025B
V
OUT
ppm/C
Output Voltage Temperature
Coefficient (Note 2)
V
OUT
/
I
OUT
Load Regulation
V/A
MAX6025A
MAX6025B
T
A
= -40C to +85C
T
A
= -40C to +85C
-0.20
0.20
-0.40
0.40
6
20
6
30
V
%
%
OUTPUT
DYNAMIC
INPUT
MAX6012/6021/6025/6030/6041/6045/6050
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
_______________________________________________________________________________________
5
V
OUT
Output Voltage Temperature
Coefficient (Note 2)
(V
OUT
+ 0.2V)
V
IN
12.6V
V
OUT
/
I
OUT
Guaranteed by line-regulation test
T
A
= +25C
Note 4
To V
OUT
= 0.1% of final value, C
OUT
= 50pF
V
IN
= 5V 100mV, f = 120Hz
Short to IN
f = 10Hz to 10kHz
f = 0.1Hz to 10Hz
Short to GND
Sinking: -500A
I
OUT
0
T
A
= 0C to +70C
T
A
= 0C to +70C
(V
OUT
) +0.2V)
V
IN
12.6V
Sourcing: 0
I
OUT
500A
1000hr at T
A
= +25C
CONDITIONS
ppm/C
Load Regulation
V/A
A/V
0.8
2.0
I
IN
/V
IN
Change in Supply Current
A
27
35
I
IN
Quiescent Supply Current
V
V
OUT
+ 0.2
12.6
V
IN
Supply Voltage Range
nF
0
2.2
C
OUT
Capacitive-Load Stability Range
s
100
t
R
Turn-On Settling Time
dB
80
V
OUT
/
V
IN
Ripple Rejection
V
RMS
150
Vp-p
65
e
OUT
Noise Voltage
ppm/
1000hr
50
V
OUT
/
time
Long-Term Stability
2.988
3.000
3.012
V
2.994
3.000
3.006
V
OUT
Output Voltage
ppm
130
Temperature Hysteresis
(Note 3)
4
mA
4
I
SC
OUT Short-Circuit Current
0.18
0.80
6
15
6
25
V/V
20
150
V
OUT
/
V
IN
Line Regulation
0.14
0.60
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
MAX6030A
MAX6030B
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
= +25C.) (Note 1)
V
IN
-
V
OUT
I
OUT
= 500A
Dropout Voltage
(Note 5)
mV
100
200
MAX6030A
MAX6030B
%
V
%
-0.20
0.20
-0.40
0.40
T
A
= -40C to +85C
T
A
= -40C to +85C
6
20
6
30
OUTPUT
DYNAMIC
INPUT
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