19-3192; Rev 0; 2/04
Low-Power, Fixed and Adjustable Reference
with Shutdown in SOT23
General Description
Features
The MAX6037 family of low-dropout, micropower volt-
age references offer fixed and adjustable output volt-
age options ranging from 1.184V to 5V. Connect an
external resistive-divider on the MAX6037_ADJ to
adjust the output voltage from 1.184V to 5V. The other
devices in the MAX6037 family feature fixed output volt-
ages of 1.25V, 2.048V, 2.5V, 3.0V, 3.3V, and 4.096V.
The MAX6037 offers shutdown functionality with an
active-low shutdown (500nA, max).
♦ Adjustable V
: 1.184V to 5V
OUT
♦ Fixed Outputs: 1.25V, 2.048V, 2.5V, 3.0V, 3.3V,
and 4.096V
♦ Shutdown Current <500nA (max)
♦ 25ppm/°C (max) Temperature Coefficient (A Grade)
♦ ±0.2% (max) Initial Accuracy (A Grade)
♦ Low 100mV (max) Dropout Voltage at 1mA Load
Current
These series-mode voltage references operate from a
2.5V to 5.5V supply and consume 275µA (max) quies-
cent current. The output is stable driving loads from
0.02µF to 1µF and can source and sink 5mA of load
current. The MAX6037 offers a low temperature coeffi-
cient of 25ppm/°C and initial accuracy of 0.2ꢀ (max).
The low dropout voltage (100mV, max at 1mA) and
supply-independent, low supply current make the
MAX6037 ideal for battery-powered applications.
♦ 2.5V to 5.5V Input Voltage Range
♦ 5mA Sink and Source Current Capability
♦ Available in 5-Pin SOT23 Package
♦ Operates Over the Automotive Temperature
Range: -40°C to +125°C
The MAX6037 is available in the miniature 5-pin SOT23
package and is specified over the -40°C to +125°C
automotive temperature range.
Selector Guide
MAX
INITIAL
OUTPUT
PART
TEMPCO ACCURACY
VOLTAGE (V)
Applications
(ppm/°C)
(%, max)
Medical Equipment
Wireless LAN
Portable Equipment
MAX6037AAUK12
MAX6037BAUK12
MAX6037CAUK12
MAX6037AAUK21
MAX6037BAUK21
MAX6037CAUK21
MAX6037AAUK25
MAX6037BAUK25
MAX6037CAUK25
MAX6037AAUK30
MAX6037BAUK30
MAX6037CAUK30
MAX6037AAUK33
MAX6037BAUK33
MAX6037CAUK33
MAX6037AAUK41
MAX6037BAUK41
MAX6037CAUK41
1.25
1.25
1.25
2.048
2.048
2.048
2.5
25
50
50
25
50
50
25
50
50
25
50
50
25
50
50
25
50
50
25
50
50
0.2
0.3
0.5
0.2
0.3
0.5
0.2
0.3
0.5
0.2
0.3
0.5
0.2
0.3
0.5
0.2
0.3
0.5
0.2
0.3
0.5
Precision Regulators
Ordering Information
PIN-
TOP
PART
TEMP RANGE
PACKAGE MARK
MAX6037AAUK12-T
MAX6037BAUK12-T
-40°C to +125°C 5 SOT23-5 AEIV
-40°C to +125°C 5 SOT23-5 AEIW
2.5
2.5
MAX6037CAUK12-T -40°C to +125°C 5 SOT23-5 AEIX
3.0
Ordering Information continued at end of data sheet.
3.0
3.0
Typical Operating Circuit
3.3
3.3
2.5V TO 5.5V INPUT
3.3
4.096
4.096
4.096
REFERENCE
OUTPUT
IN
MAX6037
GND
OUT
MAX6037AAUKADJ* 1.184 to 5, adj
MAX6037BAUKADJ* 1.184 to 5, adj
MAX6037CAUKADJ* 1.184 to 5, adj
*
SHDN
0.02µF
TO 1µF
* OPTIONAL
*The accuracy of the MAX6037_ADJ is dependent on the
accuracy of the external resistors. Use 1% resistors with low
temperature coefficient for best overall accuracy.
Pin Configuration appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
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