19-1137; Rev 3; 5/08
4-Pin Micropower Voltage Monitors
6/MAX837
______________General Description
____________________________Features
The MAX836/MAX837 micropower voltage monitors
contain a 1.204V precision bandgap reference and a
comparator in a SOT143 package. The MAX836 has an
open-drain, n-channel output driver, while the MAX837
has a push-pull output driver. Two external resistors set
the trip threshold voltage.
o
1.2ꢀ5 Precision ꢁoltage Tꢂresꢂold
o SOT143 Package
o Low Cost
o < ꢀµA Typical Supply Current
o Open-Drain Output (MAX836)
Pusꢂ-Pull Output (MAX837)
________________________Applications
Precision Battery Monitor
_______________Ordering Information
PIN-
TOP
PART*
TEMP RANGE
PACKAGE
MARK
Load Switching
MAX836EUS-T
MAX837EUS-T
-40°C to +85°C 4 SOT143-4
-40°C to +85°C 4 SOT143-4
EQAA
ERAA
Battery-Powered Systems
Threshold Detectors
*All devices available in tape-and-reel only. Contact factory for
availability.
Devices are available in both leaded and lead-free packaging.
Specify lead-free by replacing “-T” with “+T” when ordering.
__________Typical Operating Circuit
___________________Pin Configuration
V
CC
MAX836
ONLY
TOP VIEW
GND
OUT
1.204V
REF
1
4
GND
OUT
MAX836
MAX837
MAX836
MAX837
IN
V
CC
V
CC
V
CC
2
3
IN
0.1μF
SOT143
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.