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Pericom Technology

PT8A2612 Datasheet Preview

PT8A2612 Datasheet

PIR Sensor Light Switch Controller

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Data Sheet
PT8A2612
PIR Sensor Light Switch Controller
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Features
General Description
2-stage operational amplifier as filter
• Built-in noise rejection circuit
• On-chip regulator
• Override function by twice turn-off and -on of AC
power
• 4s soft start and 1 minutes soft stop by three
steps with 5 minutes hold time at fOSCD = 1Hz
• 40 second warm-up
• Turn on 25% during night without motion
• Mode pin to set test mode, disable dimmer or
auto mode
• Auto-reset if the ZC signal disappears over 3
seconds
• Quickly check mode for installation
• Synchronous with AC 220V/50Hz and 110V/60Hz
• Output pulse for triac drive and level for relay
• CDS to enable/disable output
• Adjustable output on time duration
• Operating voltage: 5V
• Average supply current: 80µA (Typ.)
The PT8A2612 is a CMOS LSI chip based on 260
base designed for use in automatic PIR lamp control.
It can operate with a 2-wire configuration for triac
applications with dimmer function or 3-wire
configuration for RELAY application.
Its PIR sensor detects infrared power variations
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 can softly turn on
as the below order, 25% lighteness, 50%, 75% 100%
as well as turn off as reverse order with an adjustable
duration.
The PT8A2612 offers three operating modes (TEST,
AUTO, disable dimmer) which can be set through
the MODE pin. While the chip is working in the AUTO
mode the user can override it and switches to the
quickly check mode, or manual ON mode, or return
to the AUTO mode by switching the power switch.
Ordering Information
Part Number
PT8A2612P
PT8A2612W
PT8A2612DE
Package
16 - Pin PDIP
16 - Pin SOP
Die Form
Applications
• Energy saving auto-switch in Garden, kitchen,
bathroom, corridor, storage, and yard
• Auto light in Meeting-room
PT0122(04/03)
1
Ver:0




Pericom Technology

PT8A2612 Datasheet Preview

PT8A2612 Datasheet

PIR Sensor Light Switch Controller

No Preview Available !

Data Sheet
PT8A2612
PIR Sensor Light Switch Controller
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Block Diagram
OP2O
OP2N
OP2P
OP1O
OP1P
OP1N
VEE
OSCD
OSCS
_
+
+
_
Comparator
Voltage
divider
Regulator
delay
oscillator
System
oscillator
latch circuit
Control
circuit
Delay circuit
Counter
circuit
Mode and CDS
control circuit
Output circuit
Power up reset
Zero cross
debounce
MODE
CDS
RELAY
TRIAC
GND
VCC
ZC
PT0122(04/03)
2
Ver:0


Part Number PT8A2612
Description PIR Sensor Light Switch Controller
Maker Pericom Technology
Total Page 12 Pages
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