PT8A261 [PERICOM]
PIR Sensor Light Switch Controller; PIR感应灯开关控制器
| 型号： | PT8A261 |
| 厂家： | 
PERICOM SEMICONDUCTOR CORPORATION |
| 描述： | PIR Sensor Light Switch Controller |
| 文件： | 总13页 (文件大小：106K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Data Sheet
PT8A261/262
PIR Sensor Light Switch Controller
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Pad Location
Pad Location of PT8A261DE
1470um
Die No.
OSCD
TRIAC
GND
CDS
ZC OSCS
MODE
VCC
OP2O
VCC
NC
OP2N
OP2P
VEE
RST
OPIP OPIN OPIO
Pad Coordinate
Pad Name
X Coordinate
Y Coordinate
Pad Name
X Coordinate
Y Coordinate
GND
TRIAC
OSCD
OSCS
ZC
570
570
65.4
NC
VEE
570
-570
303.9
-44.8
-211.8
-570
-570
-570
-570
-268.6
232.4
-687.2
689.2
689.2
-435.6
-268.6
-101.6
65.4
-101.6
399.4
232.4
689.2
-687.2
-435.6
-687.2
-687.2
570
570
RST
OP1P
OP1N
OP1O
OP2P
OP2N
OP2O
-378.8
-30.1
570
-197.1
136.9
CDS
MODE
VCC
VCC
Note: Substrate is connected to GND
PT0075(04/03)
Ver:5
2
Data Sheet
PT8A261/262
PIR Sensor Light Switch Controller
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Pad Location of PT8A262DE
1470um
Die No.
OSCD
RELAY
GND
CDS
ZC OSCS
MODE
VCC
OP2O
VCC
NC
OP2N
OP2P
VEE
RST
OPIP OPIN OPIO
Pad Coordinate
Pad Name
X Coordinate
Y Coordinate
Pad Name
X Coordinate
Y Coordinate
GND
RELAY
OSCD
OSCS
ZC
CDS
MODE
VCC
570
570
570
65.4
NC
570
-570
303.9
-44.8
-211.8
-570
-570
-570
-570
-268.6
232.4
-687.2
689.2
689.2
-435.6
-268.6
-101.6
65.4
-101.6
399.4
232.4
689.2
-687.2
-435.6
-687.2
-687.2
VEE
RST
570
OP1P
OP1N
OP1O
OP2P
OP2N
OP2O
-378.8
-30.1
570
-197.1
136.9
VCC
Note: Substrate is connected to GND
PT0075(04/03)
Ver:5
3
Data Sheet
PT8A261/262
PIR Sensor Light Switch Controller
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Pin Assignment
Figure 2
PT8A261P/PT8A261W
PT8A262P/PT8A262W
GND
TRIAC
OSCD
OSCS
ZC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
OP2O
OP2N
OP2P
OP1O
OP1N
OP1P
RST
GND
RELAY
OSCD
OSCS
ZC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
OP2O
OP2N
OP2P
OP1O
OP1N
OP1P
RST
CDS
CDS
MODE
VCC
MODE
VCC
VEE
VEE
Top view
Top view
Pin Description
Table 1
Pin/Pad
261 262
Name
Type
Ground Ground
Description
1
1
2
GND
RELAY
TRIAC
OSCD
O
O
RELAY drive output through an external NPN transistor, active high
TRIAC drive two-pulse output, active negative pulse.
2
3
3
4
5
6
I/O
Output timing oscillator I/O, connected to an external RC to adjust output duration.
System oscillator I/O, connected to an external RC to set the system frequency. The system
frequency = 16kHz for normal application.
4
5
6
OSCS
ZC
I/O
I
I
Schmitt input for AC zero crossing detection.
Connected to a CDS voltage divider for daytime/night auto-detection. Low input to this pin
can disable PIR input. CDS is a schmitt trigger input with 5-second input debounce time.
CDS
Mode select, connecting to VCC- output always on, connection GND - output always off,
open - auto detection
7
8
9
7
8
9
MODE
VCC
I
Power Power supply
Internal voltage regulator output, 3.6V with respect to ground. Connected to the drain of
PIR sensor
VEE
O
10
11
12
13
14
15
16
10
11
12
13
14
15
16
RST
I
I
Chip reset input, active low, kept floating or connected an RC network
Non-inverted input of first operational amplifier, connected directly to source of PIR sensor
Inverted input of first operational amplifier
OP1P
OP1N
OP1O
OP2P
OP2N
OP2O
I
O
I
Output of first operational amplifier
Non-inverted input of second operational amplifier.
Inverted input of second operational amplifier
Output of second operational amplifier
I
O
PT0075(04/03)
Ver:5
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Data Sheet
PT8A261/262
PIR Sensor Light Switch Controller
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OSCS and OSCD Pins
Functional Descriptions
OSCS is a system oscillator I/O pin connected to an external
RC to generate system frequency of 16kHz.
The PT8A261 and PT8A262 are CMOS LSI chips designed for
automatic PIR lamp control. They can operate in 2-wire con-
figuration for triac applications or in 3-wire configuration for
relay applications.
OSCD is an output timing oscillator I/O pin. It’s connected to
an external RC to obtain the desired turn-on duration by se-
lecting various values of RC or using a variable resistor.FOSCD
is the frequency of OSCD pin, output timing can be caculated
as the formula: TD = 21504/FOSCD
The device consists of operational amplifiers, a comparator,
timer, a zero crossing detector, control circuit, a voltage regu-
lator, a system oscillator, and an output timing oscillator.
CDS Input Circuit
The PIR sensor detects infrared power variations caused by
motion of a human body and transfer to a voltage variation. If
the PIR output voltage variation conforms to criteria, the lamp CDS is a CMOS schmitt trigger input pin. It is used to distin-
is turned on for an adjustable duration. The PT8A261 (or 262) guish between day time and night time. When the input volt-
offers three operating modes (ON, AUTO, OFF) which can be age of CDS is high the PIR input is enabled, when CDS low the
set through a MODE pin. When the device is working in AUTO PIR input disabled. The input disable-to-enable debounce
mode, the user can override the mode to switch it to TEST time is 5 seconds. Connect this pin to VCC when not using it.
mode or manual ON mode, or return to the AUTO mode by The CDS input is ignored when the TRIAC or RELAY output
switching power switch.
is active.
Figure 3. System Oscillator
Figure 4. Output Timing Oscillator
TD = 21504/FOSCD
RD
RS
560K
OSCS
OSCD
PT8A261/
262
PT8A261/
262
CD
C
S
200P
Figure 5. CDS Input Circuit
Table 2. CDS Pin Function
VCC
CDS
LOW
HIGH
Status
Day Time
PIR
Schmitt
Driver
Rp
Disabled
Enabled
CDS
CDS
Control
CDS Circuit
Night
PT8A261/262
Figure 6. CDS Enable Debounce
CDS
< 5s
> 5s
PIR Enable
Disable
Enable
PT0075(04/03)
Ver:5
5
Data Sheet
PT8A261/262
PIR Sensor Light Switch Controller
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vice can be toggled from ON to AUTO by switching the power
switch twice within 3 seconds again (override operation).
MODE
MODE is a tri-state input pin for operation mode selection.
See the following table 3.
If the chip is overridden to ON and there is no further override
operation, it will return to AUTO automatically after an inter-
nal preset ON time duration (8 hours).
Override Control: The term “override” refers to the change of
operating mode by switching the power switch twice within 3
seconds. When the chip is working in the AUTO mode (MODE
pin openned), the output is activated by a valid PIR trigger
signal and the output active duration is controlled by the OSCD
oscillation period. The lamp can be switched to ON from the
AUTO mode by either switching the MODE pin to VCC or
switching the power switch twice within 3 seconds. The de-
The override operation will cause the lamp flash (for TRIAC
version only). It will flash 3 times at 1Hz rate when changing
AUTO mode to other mode, and flash 3 times at 2Hz rate when
returning to AUTO mode. But no flash if mode is changed by
switching the MODE switch. See Figure 7 for override timing.
Table 3. Operation Modes by MODE Pin
MODE
Status
Operation
Mode
Description
Output is always ON: RELAY pin sends high level for relay driving; TRIAC pulse train output is
synchronized by ZC for triac driving.
VCC
ON
OFF
Output is always OFF: RELAY pin sends low level for relay driving; TRIAC pin sends high level
for triac driving.
GND
Open
Outputs remain in the OFF state until activated by a valid PIR trigger input signal. When working
in the AUTO mode, the device allows override control by switching the ZC signal.
AUTO
Figure 7. Override Timing
flash
ON
flash
flash
flash
Operating Mode
AUTO
AUTO
ON
8 hours
AUTO
ZC
Flash is only for TRIAC version
Figure 8. RST Application Example
RST Pin
RST is used to reset the device. It is internal pull-high and
active low. The use of CRST can extend the power-on initial
time. If the RST pin is openned (without CRST), the initial
time is 40 seconds. See Figure 8.
VCC
REST
RST
CRST
GND
PT0075(04/03)
Ver:5
6
Data Sheet
PT8A261/262
PIR Sensor Light Switch Controller
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In case that the ZC signal disappears more than 3 seconds, the
chip will restart the initialization operation. However, the re-
start initial time is always 40 seconds and cannot be extended
by adding CRST to the RST pin as shown in Figure 6.
Power On Initial
The PIR signal amplifier requires a warm up period after power-
on. The input should be disabled during this period.
Trigger
In the AUTO mode within the first 10 seconds of the initial
time the chip allows override control to enter the quickly in-
stall mode.After 40s of the initial time the chip allows over-
ride control between ON and AUTO. It will remain in the warm
up period if the total initial time has not elapsed after return-
ing to AUTO.
The trigger timing is shown in Figure 9.
Retrigger -- If another signal is attained in trigger hold time,
the circuit will be retriggered, and the trigger hold time will be
restarted from this time.
Figure 9. Trigger Timing
RST
CDS
5s
Output
Enable
+trigger level
-trigger level
Comparator
Input
>24ms
Comparator
Output
<24ms
(Note1)
Detect
Enable
power on delay time
40s
10s test
enable
Test
Enable
RELAY
ON
ON
TRIAC
pulse out
(Note2)
Notes: 1. The output is activated if the trigger signal conforms to the following criteria:
- More than 3 triggers within 2 seconds,
- A trigger signal sustain duration > 0.34 seconds, and
- 2 triggers within 2 seconds with pulse duration of one > 0.16 seconds.
- The effective comparator output width is 24ms.(Fosc=16KHz)
2. The output duration is set by an external RC connected to the OSCD pin.
PT0075(04/03)
Ver:5
7
Data Sheet
PT8A261/262
PIR Sensor Light Switch Controller
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Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested)
Note:
Stresses greater than those listed under MAXIMUM
Storage Temperature ............................................................-40oC to +125oC
RATINGS may cause permanent damage to the
Supply Voltage to Ground Potential (Inputs & VCC Only) .... -0.3 to +6.0V
device. This is a stress rating only and functional
Supply Voltage to Ground Potential (Outputs & D/O Only) -0.3 to +6.0V
operation of the device at these or any other condi-
DC Input Voltage ....................................................................... -0.3 to +6.0V
tions above those indicated in the operational sec-
DC Output Current .................................................................................20mA
tions of this specification is not implied. Exposure
Power Dissipation .............................................................................. 500mW
to absolute maximum rating conditions for ex-
tended periods may affect reliability.
Recommended Operation Conditions
Sym
VCC
VIH
Description
Min
4.75
0.8VCC
-
Typ
5.0
-
Max
6.0
Units
V
Supply Voltage
Input HIGH Voltage (MODE,RST)
Input LOW Voltage (MODE,RST)
System Oscillator Frequency
Delay Oscillator Frequency
Operation Temperature
-
V
VIL
-
0.2VCC
19.2
19.2
70
V
fSYS
fDOSC
TA
12.8
12.8
-25
16
16
25
kHz
kHz
OC
DC Electrical Characteristics
Sym
Description
Test Conditions
VIH = 4.5V
Min
Typ
Max
0.1
Units
IIH
Input high level leakage current(ZC,CDS)
Input low level leakage current(ZC,CDS)
-0.1
-0.1
-
-
mA
IIL
VIL = 0.5V
0.1
mA
mA
mA
V
IOH
Output Source Current (RELAY, TRIAC)
Output Sink Current (RELAY, TRIAC)
CDS Transfer High Voltage
CDS Transfer Low Voltage
VOH = 4.5V
VOL = 0.5V
-6
-
-
IOL
15
-
-
VTH1
VTL1
VTH2
VTL2
VTH3
VTL3
VTH4
VTL4
3.0
1.5
2.6
1.0
2.2
1.0
2.2
0.4
3.2
1.7
2.9
1.4
2.4
1.4
2.4
0.6
3.6
2.1
3.2
1.6
2.8
1.6
2.8
0.8
V
ZC Transfer High Voltage
V
ZC Transfer Low Voltage
V
OSCS Transfer High Voltage
OSCS Transfer Low Voltage
OSCD Transfer High Voltage
OSCD Transfer Low Voltage
V
V
V
V
Note: These specifications apply for VCC = 5.0V and -25OC £ TA £ 70OC, unless otherwise specified.
PT0075(04/03)
Ver:5
8
Data Sheet
PT8A261/262
PIR Sensor Light Switch Controller
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AC Electrical Characteristics
Voltage Regulator
Sym
Description
Test Conditions
Min
Typ
Max
Units
V
VEE
Output Voltage
No load
3.2
3.6
4.0
V
VOP2P
Noninverting input of OP2
No load
1.6
1.8
2.0
DVO
DVLDR
IL
Line Regulation
Load Regulation
4.5V £ VCC £ 5.5V, IL = 1mA
VCC = 5V, 0.5mA £ IL£ 2mA
VCC = 5V
-
-
30
60
-
50
100
-
mV
mV
mA
Regulator Output Current
4
Operational Amplifier and Window Comparator
Sym
BW
VTH
VTL
Description
Test Conditions
Min
10
Typ
-
Max
-
Units
kHz
V
3dB Bandwidth
-
VCC = 5V
1.9
1.4
2.05
1.55
2.2
1.7
Windows Comparator Threshold
VCC = 5V
V
PT0075(04/03)
Ver:5
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Data Sheet
PT8A261/262
PIR Sensor Light Switch Controller
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Oscillator and ZC Input Pulse and Trigger Output Pulse
Sym
Description
Test Conditions
Min
Typ
Max
Units
fOSC
tZR
Oscillator Frequency
ZC Pulse Rise Time
ZC Pulse Fall Time
ZC Pulse Period
12.8
-
16
30
30
20
1
19.2
100
100
22.2
-
kHz
ns
tZF
-
ns
tZP
15.1
0.8
ms
ms
VCC= 5V, RS = 560W,
CS = 200pF, see above fig 3
tZW
ZC Pulse Width
tOR
tOF
tOP
tOW
TRIAC Pulse Rise Time
TRIAC Pulse Fall Time
TRIAC Pulse Period
TRIAC Pulse Width
-
-
30
30
100
100
11
ns
ns
6.6
52
10
ms
ms
62.5
76
Figure 10. Timing Diagram
tZR
tZF
ZC
tZW
tZP
tOF
tOR
TRIAC
tOW
tOP
Power Dissipation
Sym
Description
Test Conditions
Min
Typ
80
Max
100
80
Units
mA
VCC = 5V, RS = 560kW ,CS=200P,
RD = 560kW , CD = 200P,
other input pins = GND, all
outputs float. see fig 3,4
ICC
Power Supply Current
-
-
VCC = 5V, All Input Pins = GND,
all outputs float.
ICCQ
Quiescent Power Supply Current
60
mA
PT0075(04/03)
Ver:5
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Data Sheet
PT8A261/262
PIR Sensor Light Switch Controller
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Typical Application Circuits
Figure 11. Two-Wire Application Circuit of PT8A261
PT0075(04/03)
Ver:5
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Data Sheet
PT8A261/262
PIR Sensor Light Switch Controller
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Figure 12. Three-Wire Application Circuit of PT8A262
ON
AUTO
OFF
PT0075(04/03)
Ver:5
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Data Sheet
PT8A261/262
PIR Sensor Light Switch Controller
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Notes
Pericom Technology Inc.
Email: support@pti.com.cn
Web Site: www.pti.com.cn, www.pti-ic.com
China:
No. 20 Building, 3/F, 481 Guiping Road, Shanghai, 200233, China
Tel: (86)-21-6485 0576 Fax: (86)-21-6485 2181
Asia Pacific: Unit 1517, 15/F, Chevalier Commercial Centre, 8 Wang Hoi Rd, Kowloon Bay, Hongkong
Tel: (852)-2243 3660 Fax: (852)- 2243 3667
U.S.A.:
2380 Bering Drive, San Jose, California 95131, USA
Tel: (1)-408-435 0800 Fax: (1)-408-435 1100
Pericom Technology Incorporation reserves the right to make changes to its products or specifications at any time, without notice, in order to
improve design or performance and to supply the best possible product. Pericom Technology does not assume any responsibility for use of any
circuitry described other than the circuitry embodied in Pericom Technology product. The company makes no representations that circuitry
described herein is free from patent infringement or other rights, of Pericom Technology Incorporation.
PT0075(04/03)
Ver:5
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