UM7027A Datasheet, PDF (1/8 Pages) Union Semiconductor, Inc. – Voltage Detector

UM70xxA
Voltage Detector
UM70xxA SOT23-3
General Description
The UM70xxA series are a set of three-terminal low power voltage detectors implemented in
CMOS technology. Each voltage detector in the series detects a particular fixed voltage ranging
from 2.4V to 5V. The voltage detectors consist of a high-precision voltage divider circuit, band
gap voltage source, a comparator and an output driver. CMOS technology ensures low power
consumption.
Although designed primarily as fixed voltage detectors, these devices can be used with external
components to detect user specified threshold voltages (NMOS open drain type only).
The UM70xxA series are available in SOT23-3 package.
Applications
z Battery checkers
z Level selectors
z Power failure detectors
z Microcomputer reset
z Battery memory backup
z Non-volatile RAM signal storage
protectors
Features
z Low power consumption
z Low temperature coefficient
z Built-in high-stability reference source
z Built-in hysteresis characteristic
z SOT23-3 package
Pin Configurations
Top View
UM70xxA
XX: Voltage Rank
SOT23-3
Selection Table
Part
Detector Hysteresis Tolerance Marking Packaging
Number Voltage Width
Code
Type
Shipping Qty
UM7027A 2.7
UM7044A
4.4
0.13V
0.22V
3%
3%
N627
N644
SOT23-3
3000pcs/7Inch
Tape & Reel
Note: The output type selection codes are:
NMOS open drain normal open, active low
For example: The UM7044A is a 4.4V, NMOS open drain active low output.
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http://www.union-ic.com Rev.04 Jul.2012
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