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PDF PT8A2648 Data sheet ( Hoja de datos )
| Número de pieza | PT8A2648 | |
| Descripción | PIR Sensor Light Switch | |
| Fabricantes | Pericom Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de PT8A2648 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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Product Features
Operating voltage: 5V (Typ.)
Average supply current: 120µA (Typ.)
2 stage op-amp for filter.
Build-in noise rejection circuit.
On-chip regulator.
Adjustable output duration
Override function.
ON/AUTO/OFF selectable by MODE pin
Apply to AC 220V/50Hz and 110V/60Hz.
Auto-reset if the ZC signal disappears over 3
seconds
Output pulse (PT8A2641/5/7) to drive triac or
output level (PT8A2642/6/8) to drive relay.
CDS to enable/disable output.
40 second warm-up.
Quick check mode for installation.
PT8A2641-2642/2645-2648
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PIR Sensor Light Switch
Product Description
The PT8A264X 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.
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 is turned on with an
adjustable duration. The PT8A264X 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 quickly install mode, or manual ON mode, or
return to the AUTO mode by switching the power
switch.
Block Diagram
Figure 1 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
Frequency
divider
Mode and CDS
control circuit
Output
circuit
Zero cross
debounce
MODE
CDS
COMPO
CDSO
RSTB
RELAY
TRIAC
GND
Vcc
ZC
12-07-0006
PT0192-3 07/06/12
1
1 page  
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Voltage regulation circuit
PT8A2641-2642/2645-2648
PIR Sensor Light Switch
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Symbol
VEE
OP2P
VO
VLDR
Parameter
Regulator Output Voltage
Noninverting input of OP2
Line regulation
Load regulation
Test Condition
VCC Condition
5V No load
Min.
3.24
Typ.
3.6
Max.
3.96
Unit
V
5V
No load
1.62 1.8 1.98 V
- 4.5VCC5.5V, IL =1mA
5V 0.5mA IL2mA
-
-
30 50 mV
60 100 mV
Operational amplifier and windows comparator
Symbol
BW
VH
VL
Description
3dB band width
Threshold of windows
comparator
Test condition
-
VCC=5V
VCC=5V
Min TYP Max Unit
10 - - KHz
1.8 2.0 2.2 V
1.35 1.5 1.65 V
Frequency of oscillator and Timing of ZC and trigger output
Symbol
FMODE
TDZT
TTPW
TDZR
Description
Oscillator frequency/512
Delay time from ZC to TRIAC
TRIAC Pulse Width
Delay time from ZC rising edge
to Relay
Test condition
VCC=5V, RS=430K ,CS=180P
(PT8A264X)
Min Typ Max Unit
25 31.25 37.5 Hz
1.16 1.45 1.74
50 62.5 75
ms
s
-
125 200
s
Power Dissipation
Symbol
ICC
Description
Power supply current
Test condition
VCC=5V, RS=430K ,CS=180P,
RD =2M, CD=104, other Input
Pins=GND, all outputs float.
Min Typ Max Unit
-
120 200
A
12-07-0006
PT0192-3 07/06/12
5
5 Page 
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Mechanical Information
16-Pin DIP
PT8A2641-2642/2645-2648
PIR Sensor Light Switch
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Note:
1) Controlling dimensions in millimeters.
2) Ref : JEDEC MS-001D/BB
PKG. DIMENSIONS(MM)
SYMBOL
A
A1
Min
3.71
0.51
Max
4.31
A2 3.20 3.60
B 0.38 0.57
B1 1.52 BSC
c 0.20 0.36
D 18.80 19.20
E 6.20 6.60
E1 7.32 7.92
e 2.54 BSC
L 3.00 3.60
E2 8.40 9.00
12-07-0006
PT0192-3 07/06/12
11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet PT8A2648.PDF ] | |
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