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HT761X Datasheet

  • HT761X

  • General Purpose PIR Controller

  • 12頁

  • HOLTEK

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HT761X
General Purpose PIR Controller
Features
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Stand-by current: 100
碌
A (Typ.)
On-chip regulator
Adjustable output duration
CDS input
40 second warm-up
ON/AUTO/OFF selectable by MODE pin
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Override function
Auto-reset if the ZC signal disappears over
3 seconds
Operating voltage: 5V~12V
16 pin DIP or SOP packaging
Applications
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PIR light controllers
Motion detectors
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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
ZC off/on for
Part Number
override
HT7610
HT7611
2 times
1 time
Flash on
mode auto-
change
Flash
No flash
Override ON
duration
8 hrs
8 hrs
Comparator
Effective
window
trigger width
1
(V
DD
-V
EE
)
16
1
(V
DD
-V
EE
)
16
>24ms
>24ms
1
24th Mar 鈥?7

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