PT8A2516NEX

PT8A2516 ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Simple Timer Features Description  Operating voltage: 3.5V~5.5V. The PT8A2516 is a CMOS LSI chip designed for  Have Reset function timer applications, the time can be adjusted by external  Relay output disable without external oscillator R/C. It has reset function.  Adjustable Timer: 20mins~16hrs The chip includes: Power on reset circuit, Logic  Quick test mode(QTM) control circuit, Output driver circuit, Key scan circuit,  Few external components timer circuit, Built-in internal oscillator and external R/C  Low cost lead free TO94-4L and SOT23-5L package oscillator circuit etc. It is enclosed in lead free TO-94 and SOT23-5 package. Applications  Timer Pin Configuration TO94-4L (Top View) OSC 1 GND 2 VCC 3 5 NC PT8A2515 SOT23-5 SOT23-5L(Top View) 4 Relay Pin Description Pin No. Pin Name I/O Relay VCC O I 1 OSC I/O 2 5 GND NC I - TO94-4L 1 2 SOT23-5L 4 3 3 4 - Description Relay output, high active Power supply Oscillator's Frequency of 8.192KHz with an external R1, C1. As input, requires a negative pulse to active “Reset” function. Ground Not connected 2014-04-0002 PT0273-4 1 04/09/2014 PT8A2516 Simple Timer Simple Timer ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Maximum Ratings 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. Storage Temperature…………………………………………..-40oC to +125oC Supply Voltage to Ground Potential (Inputs & VCC only)……- 0.5 to VCC+0.5V Supply Voltage to Ground Potential (Outputs & D/O only) …- 0.5 to VCC+0.5V DC Input Voltage …………………………………………- 0.5V to VCC +0.5V DC Output Current ……………………………………………………… 20mA Power Dissipation……………………………………………………… 500mW Recommended Operation Conditions Sym Description Min Typ Max Unit VCC Supply voltage. 3.5 5.0 5.5 V VIH “H” Input Voltage 0.8 VCC - - V VIL “L” Input Voltage - - 0.35 VCC V TA Operation temperature -40 25 85 C DC Electrical Characteristics (Unless otherwise noted, VCC= 5V, TA = -40 ~ 85ºC) Symbol Parameter Test Condition Min Typ Max Unit IOH Output Source Current (Relay) VOH=4.5V -10 - - mA IOL Output Sink Current(Relay) VOL=0.5V 10 - 100 uA 7808 8192 8576 Hz - - 500 A OSC ICC R1=47KΩ C1=332, see Fig 1 VCC=5V, R1=47 KΩ, C1=332, all output floating. See Fig 1 Frequency of normal oscillator Power supply current IC RELAY VCC OSC/RESET OSC GND R1 47K 1 C URRENT METER 2 3 C1 332 4 POWER SUPPLY PT8A2 515/6NE Fig1 Test circuit 2014-04-0002 PT0273-4 2 04/09/2014 PT8A2516 Simple Timer Simple Timer ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Block Diagram OSC OSC/RESET Oscillator Timer VCC Logic control Key scan GND Power On Reset Circuit Output Driver System Oscillator RELAY Function Description (Refer to Block Diagram) The chip mainly includes: Power on reset circuit, Logic control circuit, Output driver circuit, Key scan circuit, timer circuit, external R/C oscillator circuit and internal oscillator circuit etc. External R/C Oscillator circuit This will produce a system frequency depend on external resistor and cap, the frequency is about 8.192 KHz when R1=47 KΩ and C1=332. (Refer to Fig 1). Note: The system frequency with external resistor and cap must be between 200Hz to 20 KHz. Power on reset circuit Internal power on reset circuit will reset all the logic circuit and the timer; it will clear all output pins when power on. Internal oscillator Logic control circuit An on-chip RC oscillator with frequency about 256 KHz is used to check the input signal and the wrong statue of external RC oscillator. The logic circuit will carries out all the logic control function. It will check OSC pin status, then control the output drive circuit, when timer is out, it will pull down Relay pin to release relay. QTM In order to make the manufacturer’s test convenient, quick test mode is designed to speed up the test. QTM can be accessed by pressing button (reset) over 3s once power on. It can exit automatically after quick test timer is expired; system comes back normal operation after quick test mode. Timer 1hr 16hr QTM timer 2s 32s Output driver circuit The pin Relay will drive a relay. Key scan circuit This circuit will detect “Reset/Restart” key at OSC have a low negative pulse, it will active the corresponding work status. When IC worked normal, it will reset the timer; when timer is out, it will reset the timer and restart the output. Timer circuit This circuit will provide a timer to logic control circuit. When Fosc = 8.192 KHz, timer output is 29486400/8192=1hrs. 2014-04-0002 PT0273-4 3 04/09/2014 PT8A2516 Simple Timer Simple Timer ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Typical Application Circuit VRL VCC R2 10K/0.25W D1 1N400 7 C1 RELAY DC24V D2 1N400 7 R3 2K D5 ZD2 5.1V C3 22u F/1 0V 1N400 7 474 /25 0VAC L R6 250 K* R1 1M/0 .2 5W RELAY KEY C2 ZD1 24V 47u F/3 5V OUT R5 4.7K Q1 120VAC 60Hz N R4 1K OUT VCC OSC D3 1N400 7 GND D4 1N400 7 2N390 4 LED 1 R7 47K* 2 3 4 PT8A2516NE PT8A2516 SW1 Res et C4 332 2014-04-0002 PT0273-4 4 04/09/2014 PT8A2516 Simple Timer Simple Timer ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Mechanical Information SOT23-5L Top Mark Instruction of SOT23-5L package : Assembly site code sG: PT8A2516TAE XX: Date code 2014-04-0002 PT0273-4 5 04/09/2014 PT8A2516 Simple Timer Simple Timer ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| TO94-4L Ordering Information Part No. PT8A2516NE PT8A2516TAE Package Code N TA Package Lead free TO94-4L Lead free and Green SOT23-5L Note:  E = Pb-free or Pb-free and Green  Adding X Suffix= Tape/Reel Pericom Semiconductor Corporation  1-800-435-2336  www.pericom.com 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. 2014-04-0002 PT0273-4 6 04/09/2014