Data Sheet PT8A2620 PIR Sensor Light Switch Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Features General Description • 2-stage operational amplifier for filter The PT8A2620 is a CMOS mixed signal LSI designed for low cost applications using PIR as motion sensor. • CDS to disable output during daytime • Timings are fully adjustable with external RC The PIR sensor detects infrared power variations components caused by motion of a human body and transfer to a • High level output for relay and triac drive with voltage variation. If the PIR output voltage variation optical-coupler conforms to criteria, the lamp is turned on for an • Built-in noise rejection circuit adjustable duration. CDS can enable or disable output • On-chip regulator with external voltage divider. • Force on function Applications • Both AC and DC operating • Operating voltage: 5V • Energy saving auto-switch in Garden, kitchen, bathroom, corridor, storage or yard • Few external components Ordering Information Pa r t Nu m b er Pa ck a ge PT8A2620P 16 - Pin PDIP PT8A2620W 16 - Pin SOP Block Diagram VCC Regulator CDS VEE OP1O OP1P OP1N OP2O OP2N OP2P RELAY + _ OP1 VCP + OP2 POR ON + & VCN RST + - HT PWD GND PT0119(03/03) Control Circuit Comparator 1 Ver:2 Data Sheet PT8A2620 PIR Sensor Light Switch Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Pin Configuration PT8A2620P/W OP1P OPIN OP1O OP2O OP2N OP2P RST GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VEE ON POR HT PWD VCC RELAY CDS Top view Pin Description P in Na me Typ e Descr ip t ion 1 OP1P I Non-inverted input of first operational amplifier, connected directly to source of PIR sensor 2 OP1N I Inverted input of first operational amplifier 3 OP1O O Output of first operational amplifier 4 OP2O O Output of second operational amplifier 5 OP2N I Inverted input of second operational amplifier 6 OP2P I Non-inverted input of second operational amplifier. Internal bias on 1.8V default. 7 RST I Reset input, active low. 8 GND 9 CDS I Schmitt, connected to a CDS voltage divider for daytime/night auto-detection. Low input to this pin can disable PIR input. CDS should be connected to VCC when not using this function. 10 RELAY O RELAY drive output through an external NPN transistor, active high. The output active duration is controlled by the HT pin 11 VCC Power 12 PWD I/O Schmitt input/open drain output, pulse width detection* 13 HT I/O Schmitt input/open drain output, hold time, external RC to set output ON time duration. Use a VR to make variable ON time. 14 POR I Power on reset, reset the chip in about 40s after power on with an external RC. 15 ON I Schmitt, force on control input, active low. 16 VEE O Internal voltage regulator output, 3.6V with respect to ground. Connected to the drain of PIR sensor Ground Ground Power supply * An active motion must meet certain condition. The chip transfers motion to pulse width signal, so an active motion must meet a preset pulse width. Pulse width is adjustable by external RC. PT0119(03/03) 2 Ver:2 Data Sheet PT8A2620 PIR Sensor Light Switch Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Force On Function Functional description PT8A2620 & Pulse width detection (PWD) or Noise rejection circuit & Pulse width detection can be used to filter the noise in order to prevent error trigger from the system. The default criteria of the width must be more than 400ms which can be set with an external RC. ON POR RST Hold time (HT) Hold time, in other word, the output active duration, it can be set with an external RC. One various resistor can be used to changed the related output duration. Power on Reset (POR) The external PIR sensor requires a period of up to 40 seconds to stabilize, so a power on reset circuit is required to ensure proper operations. During this power on reset period, the lamp is on to indicate proper operation. Force on function The IC can force the controlled lamp to on state by turning off the power supply for a brief period of time. During this brief power interruption, the power to the IC must be maintained. Shown in the schematic, with ON input discharged to low while RST maintains at high, the lamp output can be set to on until a RST input is low (longer period of power down). This feature may cause not intended lamp on situation during brief power interruption. Tie ON to VCC to disable this feature. Retrigger If another PIR signal is attained with valid duration, the circuit will be retriggered, and the hold time will be restarted from this time. Trigger Timing RST CDS +trigger level -trigger level Comparator Input Comparator Output An active pulse width PWD Threshold Threshold HT Hold time ON power on reset time 40s POR Threshold RELAY PT0119(03/03) 3 Ver:2 Data Sheet PT8A2620 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 o o Storage Temperature ...................................................... -40 C to +125 C 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 Descr ip t ion Min Typ Ma x Un it s VCC Supply Voltage 4.75 5.0 6.0 V TA Operation Temperature -25 25 70 O C DC Electrical Characteristics Sym IIH Descr ip t ion Test C on d it ion s Input high leakage current (POR, CDS, ON) Input low leakage current (POR, CDS, ON) OUTPUT Source Current (RELAY) VOH = 4.5V OUTPUT Sink Current (HT) IOL Ma x Un it s -1 - 1 µΑ -6 - -1 µΑ -1 - 1 µΑ -15 - -8 µΑ -10 - - mA 30 - - mA 10 - - mA 5 - - mA VIL = 0.5V Input low leakage current (RST) IOH Typ VIH = 4.5V Input high leakage current (RST) IIL Min VOL = 0.5V OUTPUT Sink Current (PWD) OUTPUT Sink Current (RELAY) VTH1 "H" Transfer Voltage (POR, CDS, PWD, HT) - 3.0 3.3 3.6 V VTL1 "L" Transfer Voltage (POR, CDS, PWD, HT) - 1.4 1.7 2.0 V VTH2 "H" Transfer Voltage (ON) - 2.7 3.0 3.3 V VTL2 "L" Transfer Voltage (ON) - 1.6 1.9 2.2 V VTH3 "H" Transfer Voltage (RST) - 2.8 3.1 3.4 V VTL3 "L" Transfer Voltage (RST) - 1.4 1.7 2.0 V Note: These specifications apply for VCC = 5.0V and -25OC ≤ TA ≤ 70OC, unless otherwise specified. PT0119(03/03) 4 Ver:2 Data Sheet PT8A2620 PIR Sensor Light Switch Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| AC Electrical Characteristics Voltage Regulator Sym Descr ip t ion Test C on d it ion s Min Typ Ma x Un it s VEE Regulator Output Voltage No load 3.2 3.6 4.0 V VOP2P Noninverting input of OP2 No load 1.5 - 2.0 V ∆VΟ Line Regulation 4.5V ≤ VCC ≤ 5.5V, IL = 1mA - - 100 mV ∆VLDR Load Regulation VCC = 5V, 0.5mA ≤ IL ≤ 2mA - - 30 mV IL Regulator Output Current VCC = 5V 4 - - mA Operational Amplifier and Window Comparator Sym Descr ip t ion Test C on d it ion s Min Typ Ma x Un it s BW 3dB Bandwidth - 10 - - kHz VCC = 5V 1.9 2.05 2.2 V VCC = 5V 1.4 1.55 1.7 V VTH Windows Comparator Threshold VTL Power Dissipation Sym Descr ip t ion Test C on d it ion s Min Typ Ma x Un it s ICC Power Supply Current VCC = 5V, other input pins = GND, all outputs float - - 200 µA PT0119(03/03) 5 Ver:2 Data Sheet PT8A2620 PIR Sensor Light Switch Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Application Circuit of PT8A2620 1M R9 BLACK S1 C4 0.68UF/400V LIVE 56/1W SW SPST D5 IN4007 CR3 1N4749 C6 220uF/10V 1N5231B C5 RED 100UF/35V R13 D4 1N4007 LAMP CR2 1N4749 NATURE WHITE R20 * 150K C1 104 R11 1M Force on R2 4M 10uF/10V D1 1N4148 16 V EE OP1P 15 ON OP1N 14 POR OP1O 13 HT OP2O 12 PWD OP2N OP2P R17 VCC 11 560K V CC RELAY 10 RELAY C14 223 9 R7 100K D2 CDS R3 RST GND VCC C12 R14 PT8A2620 100UF/10V C7 Warm up 40s R6 100K C3 203 R16 56K D S G SD6222 R18 680K R1 VCC C8 C16 100UF 24V RELAY 2.2K Q1 9014 Turn S1 on/off once to enter chip into force on state. Exitting force on must power off a period 220uF/10V C2 CR1 5.1V S R4 * VCC 2K D3 1N4148 S2 AC 220V OUTSIDE R12 24V R8 1 203 2 C10 22K 22UF/10V R15 3 R10 1M 4 C9 203 5 22K 22UF/10V C11 6 7 8 R19 VCC C13 10UF/10V 10K C15 47UF/10V 1N4148 R5 CDS PT0119(03/03) 6 Ver:2 Data Sheet PT8A2620 PIR Sensor Light Switch Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Notes Pericom Technology Inc. Email: [email protected] 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. PT0119(03/03) 7 Ver:2