HT7611 데이터 시트보기 (PDF) - Holtek Semiconductor

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HT7611

General Purpose PIR Controller

Holtek Semiconductor 

HT761X

General Purpose PIR Controller

Features

• Stand-by current: 100µA (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

• Operating voltage: 5V~12V

• 16 pin DIP or SOP packaging

Applications

• PIR light controllers

• Motion detectors

• Alarm systems

• Auto door bells

General Description

The HT761X is a CMOS LSI chip designed for

use in automatic PIR lamp control. It can oper-

ate with a 2-wire configuration for triac applica-

tions or with a 3-wire configuration for relay

applications. The chip is equipped with opera-

tional amplifiers, a comparator, timer, a zero

crossing detector, control circuit, a voltage regu-

lator, a system oscillator, and an output timing

oscillator.

Its PIR sensor detects infrared power vari-

ations induced by the motion of a human body

and transforms it to a voltage variation. If the

PIR output voltage variation conforms to the

criteria (refer to the functional description), the

lamp is turned on with an adjustable duration.

The HT761X offers three operating modes (ON,

AUTO, OFF) which can be set through the

MODE pin. While the chip is working in the

AUTO mode the user can override it and switch

to the TEST mode, or manual ON mode, or

return to the AUTO mode by switching the

power switch. The chip is enclosed in a 16 pin

DIP/SOP.

Selection Table

Part Number

ZC off/on for

override

HT7610

2 times

HT7611

1 time

Flash on

mode auto-

change

Flash

No flash

Override ON Comparator Effective

duration

window trigger width

8 hrs

8 hrs

1

16

(VDD-VEE)

1

16

(VDD-VEE)

>24ms

>24ms

1

24th Mar ’97

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