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PT8A2645PE

P1-P3P4-P6P7-P9P10-P12P13-P13
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12-07-0006 PT0192-3 07/06/12
4
PT8A2641-2642/2645-2648
PIR Sensor Light Switch
Maximum Ratings
Recommended Operating Conditions
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
V
CC
Condition
V
CC
Operating Voltage
-
-
4.75
5.0
6.0
V
V
IH
“H” Input Voltage
-
-
0.8
-
-
V
CC
V
IL
“L” Input Voltage
-
-
-
-
0.2
V
CC
F
SYS
System Oscillator Frequency
5V
ROSCS=430K
COSCS=180P
12.8
16
19.2
KHz
T
A
Operating temperature
-
-
-20
25
70
°C
Electrical Characteristics
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
V
CC
Condition
VTH1
CDS “H” Transfer Voltage
5V
3.0
3.3
3.6
V
VTL1
CDS “L” Transfer Voltage
5V
0.9
1.2
1.5
V
VTH2
ZC “H” Transfer Voltage
5V
2.6
2.9
3.2
V
VTL2
ZC “L” Transfer Voltage
5V
1.1
1.4
1.7
V
VTH3
OSCS “H” Transfer Voltage
5V
2.7
3
3.3
V
VTL3
OSCS “L” Transfer Voltage
5V
0.8
1
1.2
V
VTH4
OSCD “H” Transfer Voltage
5V
2.7
3
3.3
V
VTL4
OSCD “L” Transfer Voltage
5V
0.8
1
1.2
V
I
IH
High level leakage current
(ZC,CDS)
5V
V
IH
=4.5V
-1
-
1
A
I
IL
Low level leakage current
(ZC,CDS)
5V
V
IL
=0.5V
-1
-
1
A
I
IHRSTB
RSTB Input high level current
5V
V
IH
=4.5V
-1
-
-5
A
IOH
Output source current(RELAY,
TRIAC)
5V
VOH=4.5V
–6
-
-
mA
IOL
Output sink current(RELAY,
TRIAC)
5V
VOL=0.5V
15
-
-
mA
IOH
Output source
Current(CDSO,COMPO)
5V
VOH=4.5V
–5
-
-
mA
IOL
Output sink
current(CDSO,COMPO)
5V
VOL=0.5V
5
-
-
mA
Storage temperature - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - -- - - - - -40°C to +125°C
Supply Voltage to Grourd Potential (Input & V
CC
Only) - - - - - -GND -0.5V to Vcc+0.5V
Supply Voltage to Grourd Potential (output & D/O Only)- - - - - GND -0.5V to Vcc+0.5V
DC Input Voltage - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -0.5V to + 6.0V
DC Output Current - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - - - - - - - - - 20mA
Power Dissipation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -500mW
Note:
Stresses greater than those listed under
MAXIMUM RATINGS may cause permanent
damage to the device. This is a stress rating only
and functional operation of the device at these or
any other conditions above those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect
reliability.
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12-07-0006 PT0192-3 07/06/12
5
PT8A2641-2642/2645-2648
PIR Sensor Light Switch
Voltage regulation circuit
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
V
CC
Condition
VEE
Regulator Output Voltage
5V
No load
3.24
3.6
3.96
V
OP2P
Noninverting input of OP2
5V
No load
1.62
1.8
1.98
V
V
O
Line regulation
-
4.5V
CC
5.5V, I
L
=1mA
-
30
50
mV
V
LDR
Load regulation
5V
0.5mA I
L
2mA
-
60
100
mV
Operational amplifier and windows comparator
Symbol
Description
Test condition
Min
TYP
Max
Unit
BW
3dB band width
-
10
-
-
KHz
V
H
Threshold of windows
comparator
V
CC
=5V
1.8
2.0
2.2
V
V
L
V
CC
=5V
1.35
1.5
1.65
V
Frequency of oscillator and Timing of ZC and trigger output
Symbol
Description
Test condition
Min
Typ
Max
Unit
F
MODE
Oscillator frequency/512
V
CC
=5V, RS=430K ,CS=180P
(PT8A264X)
25
31.25
37.5
Hz
T
DZT
Delay time from ZC to TRIAC
1.16
1.45
1.74
ms
T
TPW
TRIAC Pulse Width
50
62.5
75
s
T
DZR
Delay time from ZC rising edge
to Relay
-
125
200
s
Power Dissipation
Symbol
Description
Test condition
Min
Typ
Max
Unit
I
CC
Power supply current
V
CC
=5V, R
S
=430K ,C
S
=180P,
R
D
=2M, C
D
=104, other Input
Pins=GND, all outputs float.
-
120
200
A
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12-07-0006 PT0192-3 07/06/12
6
PT8A2641-2642/2645-2648
PIR Sensor Light Switch
Functional Description
VEE: supplies power to the analog front end circuit, it is about a stable 3.6V with respect to GND normally.
OSCS: a system oscillator input pin. System frequency of 16KHz can be generated when connecting to an external RC shows
as figure 2 (R=430K, C=180pf).
RS
430k
OSCS
180P
CS
-
+
-
+
VTH3
VTL3
+
+
Figure 2 System oscillator
PT8A264X
RD
OSCD
CD
-
+
-
+
VTH4
VTL4
+
+
Figure 3 Output timing oscillator
PT8A264X
TD=23552/FOSCD
OSCD: input pin of timing oscillator. It’s connected to an external RC to obtain the desired output timer. Variable output turn-
on duration can be achieved by selecting various values of RC or using a variable resistor, see figure 3.
Note: The minimum resistor should be low enough to 2K in order to provide adjustable range about 1000 times between min
and max timer (The maximum resistor is 3M). It is recommended that CD is more than 103 in order to guarantee not too bad
linearity.
RELAY (TRIAC): an output pin set as a RELAY driving (active high) output for the PT8A2642/6/8, or as a TRIAC driving
(active low) output for the PT8A2641/5/7. The output active duration is controlled by the OSCD oscillating period.
CDS and CDSO: CDS has a schmitt trigger input structure. It is used to distinguish lighteness. With a resistor divider
including a CDS component, if light is weak enough, CDS is high the PIR input is active. Oppositely, the CDSO will be
inactive when CDS is low. The input debounce time from inactive to active is 5 seconds. CDS should be pulled high without
using this function. The input of CDS will be ignored once the output is active.
Figure 4 CDS input interface and enable debounce
RSTB: used to reset the chip. It is internal pull-high and active low.
The use of CRST can extend the power-on initial time. If the RSTB pin
is an open circuit (without CRST), the initial time is the default (40
secs).
CDS
Status
CDSO
LOW
Day Time
inactive
HIGH
Night
active
VC
C
VSS
RES
T
RST
B
CRST
Figure 5 RSTB application example
CDS
CDSO enable
>5s
enabledisable
CDS
CDS
RW
<5s
Photo
Resistor
P1-P3P4-P6P7-P9P10-P12P13-P13

PT8A2645PE

Mfr. #:
Buy PT8A2645PE
Manufacturer:
Diodes Incorporated
Description:
Board Mount Motion & Position Sensors PIR Controller PDIP-16 TUBE 25PCS
Lifecycle:
New from this manufacturer.
Delivery:
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