General Description

The HT761x is a CMOS LSI chip designed for use in automatic PIR lamp control. It can operate with a 2-wire configuration for triac applications or with a 3-wire configuration for relay applications. The chip is equipped with operational amplifiers, a comparator, timer, a zero crossing detector, control circuit, a voltage regulator, a system oscillator, and an output timing oscillator.

Features

Operating voltage: 5V~12V

Standby current: 100A (Typ.)

On-chip regulator

Adjustable output duration

CDS input

40 second warm-up

ON/AUTO/OFF selectable by MODE pin

Override function

Auto-reset if the ZC signal disappears over 3 seconds

16-pin DIP package

Applications

PIR light controllers)

Motion detectors

Alarm systems

Auto door bells