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Data Sheet PT8A261/262 PIR Sensor Light Switch Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Pad Location Pad Location of PT8A261DE 1470um Die No. CDS ZC OSCS OSCD TRIAC MODE VCC OP2O VCC NC OP2N OP2P VEE RST OPIP OPIN OPIO 1710um GND Pad Coordinate Pad Name X Coordinate Y Coordinate 65.4 -101.6 399.4 232.4 689.2 -687.2 -435.6 -687.2 -687.2 Pad Name NC VEE RST OP1P OP1N OP1O OP2P OP2N OP2O X Coordinate 570 -570 303.9 -44.8 -211.8 -570 -570 -570 -570 Y Coordinate -268.6 232.4 -687.2 689.2 689.2 -435.6 -268.6 -101.6 65.4 GND 570 TRIAC 570 OSCD 570 OSCS 570 ZC -378.8 CDS -30.1 MODE 570 VCC -197.1 VCC 136.9 Note: Substrate is connected to GND PT0075(04/03) 2 Ver:5 Data Sheet PT8A261/262 PIR Sensor Light Switch Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Pad Location of PT8A262DE 1470um Die No. CDS ZC OSCS OSCD RELAY MODE VCC OP2O VCC NC OP2N OP2P VEE RST OPIP OPIN OPIO 1710um GND Pad Coordinate Pad Name X Coordinate Y Coordinate 65.4 -101.6 399.4 232.4 689.2 -687.2 -435.6 -687.2 -687.2 Pad Name NC VEE RST OP1P OP1N OP1O OP2P OP2N OP2O X Coordinate 570 -570 303.9 -44.8 -211.8 -570 -570 -570 -570 Y Coordinate -268.6 232.4 -687.2 689.2 689.2 -435.6 -268.6 -101.6 65.4 GND 570 RELAY 570 OSCD 570 OSCS 570 ZC -378.8 CDS -30.1 MODE 570 VCC -197.1 VCC 136.9 Note: Substrate is connected to GND PT0075(04/03) 3 Ver:5 Data Sheet PT8A261/262 PIR Sensor Light Switch Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Pin Assignment Figure 2 PT8A261P/PT8A261W GND TRIAC OSCD OSCS ZC CDS MODE V CC 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 OP2O OP2N OP2P OP1O OP1N OP1P RST V EE PT8A262P/PT8A262W GND RELAY OSCD OSCS ZC CDS MODE V CC 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 OP2O OP2N OP2P OP1O OP1N OP1P RST V EE Top view Top view Pin Description Table 1 Pin/Pad Name 261 1 262 1 2 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 3 4 5 6 7 8 9 10 11 12 13 14 15 16 GND RELAY TRIAC OSCD OSCS ZC CDS MODE V CC VEE RST OP1P OP1N OP1O OP2P OP2N OP2O Ground Ground O O I/O I/O I I I Power O I I I O I I O RELAY drive output through an external NPN transistor, active high TRIAC drive two-pulse output, active negative pulse. 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. 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. Mode select, connecting to VCC- output always on, connection GND - output always off, open - auto detection Power supply Internal voltage regulator output, 3.6V with respect to ground. Connected to the drain of PIR sensor 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 Output of first operational amplifier Non-inverted input of second operational amplifier. Inverted input of second operational amplifier Output of second operational amplifier Type Description PT0075(04/03) 4 Ver:5 Data Sheet PT8A261/262 PIR Sensor Light Switch Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Functional Descriptions The PT8A261 and PT8A262 are CMOS LSI chips designed for automatic PIR lamp control. They can operate in 2-wire configuration for triac applications or in 3-wire configuration for relay applications. The device consists of operational amplifiers, a comparator, timer, a zero crossing detector, control circuit, a voltage regulator, a system oscillator, and an output timing oscillator. 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 is turned on for an adjustable duration. The PT8A261 (or 262) offers three operating modes (ON, AUTO, OFF) which can be set through a MODE pin. When the device is working in AUTO mode, the user can override the mode to switch it to TEST mode or manual ON mode, or return to the AUTO mode by switching power switch. Figure 3. System Oscillator OSCS and OSCD Pins OSCS is a system oscillator I/O pin connected to an external RC to generate system frequency of 16kHz. OSCD is an output timing oscillator I/O pin. It's connected to an external RC to obtain the desired turn-on duration by selecting 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 CDS Input Circuit CDS is a CMOS schmitt trigger input pin. It is used to distinguish between day time and night time. When the input voltage of CDS is high the PIR input is enabled, when CDS low the PIR input disabled. The input disable-to-enable debounce time is 5 seconds. Connect this pin to VCC when not using it. The CDS input is ignored when the TRIAC or RELAY output is active. Figure 4. Output Timing Oscillator TD = 21504/FOSCD RS 560K OSCS PT8A261/ 262 200P RD OSCD PT8A261/ 262 CS CD Figure 5. CDS Input Circuit V CC Rp Schmitt Driver CDS Control CDS Circuit PT8A261/262 Table 2. CDS Pin Function CDS LOW HIGH Status Day Time Night PIR Disabled Enabled CDS Figure 6. CDS Enable Debounce CDS < 5s > 5s PIR Enable PT0075(04/03) Disable Enable Ver:5 5 Data Sheet PT8A261/262 PIR Sensor Light Switch Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| MODE MODE is a tri-state input pin for operation mode selection. See the following table 3. 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 deTable 3. Operation Modes by MODE Pin MODE Status VCC GND Open Operation Mode ON OFF AUTO vice can be toggled from ON to AUTO by switching the power switch twice within 3 seconds again (override operation). If the chip is overridden to ON and there is no further override operation, it will return to AUTO automatically after an internal preset ON time duration (8 hours). 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. Description Output is always ON: RELAY pin sends high level for relay driving; TRIAC pulse train output is synchronized by ZC for triac driving. Output is always OFF: RELAY pin sends low level for relay driving; TRIAC pin sends high level for triac driving. 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. Figure 7. Override Timing flash Operating Mode AUTO ON flash AUTO flash ON 8 hours flash AUTO ZC Flash is only for TRIAC version 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. Figure 8. RST Application Example VCC REST RST CRST GND PT0075(04/03) 6 Ver:5 Data Sheet PT8A261/262 PIR Sensor Light Switch Controller |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Power On Initial The PIR signal amplifier requires a warm up period after poweron. The input should be disabled during this period. In the AUTO mode within the first 10 seconds of the initial time the chip allows override control to enter the quickly install mode.After 40s of the initial time the chip allows override control between ON and AUTO. It will remain in the warm up period if the total initial time has not elapsed after returning to AUTO. Figure 9. Trigger Timing In case that the ZC signal disappears more than 3 seconds, the chip will restart the initialization operation. However, the restart initial time is always 40 seconds and cannot be extended by adding C RST to the RST pin as shown in Figure 6. Trigger 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. RST CDS Output Enable Comparator Input >24ms +trigger level -trigger level 5s Comparator Output <24ms (Note1) Detect Enable Test Enable RELAY TRIAC power on delay time 40s 10s test enable ON ON 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) 7 Ver:5 Data Sheet PT8A261/262 PIR Sensor Light Switch Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| 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 condiDC Input Voltage ....................................................................... -0.3 to +6.0V tions above those indicated in the operational secDC Output Current .................................................................................20mA tions of this specification is not implied. Exposure Power Dissipation .............................................................................. 500mW to absolute maximum rating conditions for extended periods may affect reliability. Recommended Operation Conditions Sym VCC VIH VIL fSYS fDOSC TA Description Supply Voltage Input HIGH Voltage (MODE,RST) Input LOW Voltage (MODE,RST) System Oscillator Frequency Delay Oscillator Frequency Operation Temperature Min 4.75 0.8VCC 12.8 12.8 -25 Typ 5.0 16 16 25 Max 6.0 0.2VCC 19.2 19.2 70 Units V V V kHz kHz O C DC Electrical Characteristics Sym IIH IIL IOH IOL VTH1 VTL1 VTH2 VTL2 VTH3 V TL3 VTH4 VTL4 Description Input high level leakage current(ZC,CDS) Input low level leakage current(ZC,CDS) Output Source Current (RELAY, TRIAC) Output Sink Current (RELAY, TRIAC) CDS Transfer High Voltage CDS Transfer Low Voltage ZC Transfer High Voltage ZC Transfer Low Voltage OSCS Transfer High Voltage OSCS Transfer Low Voltage OSCD Transfer High Voltage OSCD Transfer Low Voltage Test Conditions VIH = 4.5V VIL = 0.5V VOH = 4.5V VOL = 0.5V Min -0.1 -0.1 -6 15 3.0 1.5 2.6 1.0 2.2 1.0 2.2 0.4 Typ 3.2 1.7 2.9 1.4 2.4 1.4 2.4 0.6 Max 0.1 0.1 3.6 2.1 3.2 1.6 2.8 1.6 2.8 0.8 Units mA mA V V V V V V V V Note: These specifications apply for VCC = 5.0V and -25OC TA 70 OC, unless otherwise specified. PT0075(04/03) 8 Ver:5 Data Sheet PT8A261/262 PIR Sensor Light Switch Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| AC Electrical Characteristics Voltage Regulator Sym VEE VOP2P V V LDR IL Description Output Voltage Noninverting input of OP2 Line Regulation Load Regulation Regulator Output Current Test Conditions No load No load 4.5V VCC 5.5V, IL = 1mA VCC = 5V, 0.5mA I L 2mA VCC = 5V Min 3.2 1.6 4 Typ 3.6 1.8 30 60 Max 4.0 2.0 50 100 Units V V mV mV mA Operational Amplifier and Window Comparator Sym BW VTH VTL Description 3dB Bandwidth Windows Comparator Threshold Test Conditions VCC = 5V VCC = 5V Min 10 1.9 1.4 Typ 2.05 1.55 Max 2.2 1.7 Units kHz V V PT0075(04/03) 9 Ver:5 Data Sheet PT8A261/262 PIR Sensor Light Switch Controller |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Oscillator and ZC Input Pulse and Trigger Output Pulse Sym fOSC tZR t ZF t ZP tZW t OR tOF tOP tOW Description Oscillator Frequency ZC Pulse Rise Time ZC Pulse Fall Time ZC Pulse Period ZC Pulse Width TRIAC Pulse Rise Time TRIAC Pulse Fall Time TRIAC Pulse Period TRIAC Pulse Width V CC= 5V, RS = 560, CS = 200pF, see above fig 3 Test Conditions Min 12.8 15.1 0.8 6.6 52 Typ 16 30 30 20 1 30 30 10 62.5 Max 19.2 100 100 22.2 100 100 11 76 Units kHz ns ns ms ms ns ns ms s Figure 10. Timing Diagram tZR ZC tZW tZP tOF TRIAC tOW tOP tOR tZF Power Dissipation Sym Description Test Conditions VCC = 5V, RS = 560k ,CS=200P, R D = 560k , CD = 200P, other input pins = GND, all outputs float. see fig 3,4 VCC = 5V, All Input Pins = GND, all outputs float. Min Typ Max Units I CC Power Supply Current - 80 100 A ICCQ Quiescent Power Supply Current - 60 80 A PT0075(04/03) 10 Ver:5 Data Sheet PT8A261/262 PIR Sensor Light Switch Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Typical Application Circuits Figure 11. Two-Wire Application Circuit of PT8A261 22UF/16V 203 C2 R4 1M 10UF/16V 1M 203 C5 D S G MODE 8V CC C4 100UF/16V 12 11 OP1O OP1N OP1P RST 10 9 VE E OSCS CDS ZC MODE 56K C13 203 SD6222 6.2 V AC 110V~230V 1N4007 470UF/16V C11 3 TRIAC 1 Q1 R1 20 K D2 CDS 100UF/16V 1N4148 R10 68/2W 0.68U/350V 1N4007 D1 R13 C1 R6 16 15 14 C9 OP2O OP2N PT8A261 TRIAC 1 2 3 OSCD GND OP2P 13 5 6 3900P C7 4 7 C3 201 R 8 560K R7 1M 1M R9 R9 200K 1N4007 D3 D5 R2 2.4M C8 104 ON/OFF OVERRIDE 20~100 W PT0075(04/03) SW1 LAMP 2 R14 C10 D4 OF F O AUT ON SW2 R3 C6 22UF/ 16V R5 22K R12 22K C12 11 Ver:5 PT0075(04/03) 3900P C6 IN4148 D1 Q1 2 RELAY OSCD OSCS ZC CDS MODE V CC V EE 9 RST 10 R3 56K D S G SD6222 D7 5.1V R1 C9 C5 CDS 100UF/35V 470UF/16V R12 22K C12 C13 203 22UF/16V OP1P 11 OP1N 12 OP1O 13 10UF/16V 203 C2 R4 1M OP2P 14 C10 OP2N 15 22UF/16V 3 4 5 6 7 MODE 8 SW2 ON AUTO OFF 20~100W R6 PT8A262 1 GND 203 C5 OP2O 16 1M C6 9014 R14 4.7K 201 R10 1M R9 560K R8 C13 3.3nf/63V 1M C3 LAMP K1 Figure 12. Three-Wire Application Circuit of PT8A262 R5 22K R6 68/2W R7 D4 R12 3.3K R13 D6 1N4007 2.4M 24V D2 24V D3 1N4148 1N4007 D5 ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| 12 C11 0.68U/350V C4 100UF/16V AC 110V~230V SW1 ON/OFF OVERRIDE Data Sheet PT8A261/262 PIR Sensor Light Switch Controller Ver:5 Data Sheet PT8A261/262 PIR Sensor Light Switch Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Notes Pericom Technology Inc. Email: support@pti.com.cn China: Asia Pacific: U.S.A.: Web Site: www.pti.com.cn, www.pti-ic.com No. 20 Building, 3/F, 481 Guiping Road, Shanghai, 200233, China Tel: (86)-21-6485 0576 Fax: (86)-21-6485 2181 Unit 1517, 15/F, Chevalier Commercial Centre, 8 Wang Hoi Rd, Kowloon Bay, Hongkong Tel: (852)-2243 3660 Fax: (852)- 2243 3667 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) 13 Ver:5 |
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