HT7022A datasheet(1/12 Pages) HOLTEK

Part #	HT7022A

Description	2.2V Voltage Detector

PDF	12 Pages

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Manufacturer	HOLTEK [Holtek Semiconductor Inc]

Direct Link	http://www.holtek.com

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HT7022A

2.2V Voltage Detector

Output Type Selection Table

VDD

VDD>VDET(+)

VDD£VDET(-)

Type

VOUT

A

Hi-Z

VSS

Rev. 1.10

1

April 20, 2004

General Description

The HT7022A is a three-terminal low power voltage de-

tector implemented in CMOS technology. It detects a

particular fixed voltage 2.2V. The voltage detector con-

sists of a high-precision and low power consumption

standard voltage source, a comparator, hysteresis cir-

cuit, 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).

Features

· Low detectable voltage 2.2V

· Low power consumption

· Low temperature coefficient

· Built-in high-stability reference source

· Built-in hysteresis characteristic

· TO-92 and SOT-89 package

Applications

· Battery checkers

· Power failure detectors

· Microcomputer reset

· Battery memory backup

· Non-volatile RAM signal storage protectors

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HT7022A Datasheet(PDF) 1 Page - Holtek Semiconductor Inc

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