||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| universal timer controller 2013-12-0013 pt0266-5 01/03/14 1 pt8a2524-26/34-36/44-46 features auto-shut off output once time-out button to on/off/reset timer available timer with high precision same as ac 50/60hz build-in rc oscillator drive external relay support 50/60hz by part quick test mode (qtm) for manufacturer available timer of 15/30/45/60/90/120/240/480min buzzer function(pt8a2524/25/34/35/44/45 optional) low cost lead free package: to94-4 or dip-8 or soic-8 description universal timer is a mixed signal cmos ic designed for a fixed timer to drive external relay to implement safety power cont rol. it is applied to 120v/240v and 50/60hz ac power supply. it can automatically shut-off load in order to prevent undesired conditions from the system. internal timer can present several kinds of different time: 15mins, 30mins, 45mins, 1hr, 1.5hrs, 2hrs, 4hrs and 8hrs, which is decided by part number. applications ? universal timer controller pin configuration pin description pt8a2524/5/6a-h, pt8a2534/5/6a-h pin name pin no i/o pin description gnd 1 - ground disc 2 i/o control output if discharging external capacitor and button input, high active relay 3 i/o relay output and button input, high active vcc 4 - power supply pt8a2544/5/6 pin name pin no. i/o pin description ts2 1 i timer selection pins(ts2 ts1 ts0 from 000~111) 000: 15m, 001: 30m, 010: 45m, 011: 60m, 100: 90m, 101: 120m,110: 240m,111: 480m default 011 by ts2 internal pull down, ts1&ts0 internal pull up ts1 2 i ts0 3 i gnd 4 - ground disc 5 i/o control output if discharging external capacitor and button input, high active relay 6 i/o relay output and button input, high active acsel 7 i 50/60hz selection pin: default is 60hz by internal pull down; connecting to vcc is 50hz. vcc 8 - power supply pt8a2524/5/6a-h pt8a2534/5/6a-h to94-4(top view) pt8a2544/5/6 dip-8 or soic-8 ( to p view )
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| 2013-12-0013 pt0266-5 01/03/14 2 pt8a2524-26/34-36/44-46 universal timer controller maximum ratings storage temperature ...................................................................................... -40 o c to +125 o c supply voltage to ground potential (input & v cc only) ............... -0.5v to v cc + 0.5v supply voltage to ground potential (ou tput s & d/o only) ........ -0.5v to v cc + 0.5v dc input voltage ...................................................................................... -0.5v to v cc + 0.5v dc output current ...................................................................... 20ma power dissipation ............................................................................................................. 500mw recommended operation conditions symbol parameter min typ max unit v cc operating voltage 4.2 4.7 5.2 v t a operating temperature 0 25 85 electrical characteristics sym parameter test conditions min typ max unit v cc condition v cc shunt regulator output voltage - i cc =1ma 4.2 4.7 5.2 v v th input threshold(relay/disc) 5v - 0.3 0.35 0.4 v i oh output source current (relay/disc) 5v v oh =0.7v -0.3 -0.5 -1 ma i ol output sink current (relay/disc) 5v v ol =0.5v 0.5 - - ma i cc power supply current 4.0v - - - 0.5 ma f osc frequency of internal oscillator 5v - 96 128 160 khz block diagram vc c gnd dis c relay ref erence circuit shunt regulator internal rc os ci l l a t o r timer chain 15/30/45/60m/90m/2h/4h/8h clock extracting circuit rela y drivi ng circuit button sampling circuit ac sel pbo 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 condi- tions above those indicated in the operational sec- tions of this specification is not implied. exposure to absolute maximum rating conditions for extended p eriods ma y affect reliabilit y .
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| 2013-12-0013 pt0266-5 01/03/14 3 pt8a2524-26/34-36/44-46 universal timer controller functional description ( note : in below description, ?relay? presents a pin, while ?relay? means a device.) clock extracting circuit vcc is not only the power supply pin but also clock source for internal precise timer. with the help of the external circuit, the ac 50/60hz clock signal can be extracted to be used as timer clock source. internal rc oscillator circuit it is employed to create puls e driving signal for relay, it is a completely internal rc oscillator with frequency of about 128khz. timer chain timer chain can be used to generate various timer including 15/30/45/60/90/120/240/480min. button sampling circuit with external buttons, on/off/reset function can be realized. user can select one button with once on, once off or two buttons to turn on or off separately, also use one button to restart timer. button sampling circuit senses button?s operation 3 times per 8ms. system will sample the button?s operation during first 100ms after power on, if buttons are pressed during this period, then system will start 3s timer to check if the chip will enter into quick test mode (see test mode section). if the related button is pressed over 3s just after power on, chip will enter quick test mode as soon as the button is released. if buttons are not pressed during first 100ms, system will operate normally. relay driving circuit relay driving signal is special, anytime, first 8ms is always high following output pulse signal with about 32khz and 25% duty cycle. disc is used to limit the voltage of external high voltage capacitor by discharging it with a npn transistor. after power on, disc should be active during first 1s before relay in order to charge the external high voltage capacitor. relay is active to output first 8ms high following 32khz with 25% duty cycle. when relay is off, relay will output a narrow pulse each 8ms, while, disc is active to output 32khz with 25% duty cycle. for pt8a2524/2534 one button (reset) ? button is tied to relay pin. ? pressing button reset to turn on relay and restart internal timer. ? relay is active once the button is released. ? disc will output low when relay is on. 32khz with 25% duty relay i s act i ve disc relay 8ms 8ms 8ms 8ms 8ms dis c is acti ve for PT8A2525/2535 one button (on/off) ? button is tied to relay pin, once on, once off. ? pressing button on/off to turn on/off relay and start/reset internal timer. ? relay is active when the button is pressed at first time. ? disc is active when the button is pressed at second time. ? disc outputs low when relay is on. for pt8a2526/2536 two buttons (on, off) ? button tied to disc pin is for on, button tied to relay pin is for off. ? pressing button on to turn on relay and start internal timer. ? pressing button off to turn off relay and reset internal timer. ? relay is active when button on is pressed. ? disc is active when button off is pressed. ? disc will output a narrow pulse each 8ms when relay is on. buzzer for pt8a2524/25/34/35/44/45, a buzzer will make 0.5s sound with a frequency of 4khz every 1s for 6 times after internal timer times out. pin disc will output 4khz with 25% duty for 0.5s to let the buzzer work, then output 32khz with 25% duty for 0.5s, after the output 6 times 4khz, disc will keep output 32khz. quick test mode(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 (on or reset) over 3s (option 2s) once power on. it can exit automatically after quick test timer is expired, system needs to power on again to come back normal operation after quick test mode. any button operations will be ignored in qtm. note : for pt8a2526/2536, the button to be pressed over 3s to enter into qtm is off. driving signals of relay and disc
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| 2013-12-0013 pt0266-5 01/03/14 4 pt8a2524-26/34-36/44-46 universal timer controller firs t pb on second pb on po wer o n >3s *12s f or 2hrs 3s warm up sampling time normal mode qui ck test mode wi l l be i g no r e d <100ms application circuit d3 in4007 r1 24k 1/2w* acl acn to94 universal timer to drive relay with one button q2 2n5551 k1 q1 2n5551 r3 10k d1 in4007 r2 27k 1/2w* c1 22uf/16v* s1 reset or on/off 120v/240v 100k 1/2w* 6.8k 1/2w* c2 104 load c3 10uf/100v d2 in4007 1 2 3 4 vcc gnd disc relay u1 pt8a2524/5-pt8a2534/5 *note1: for 120vac power supply system, r1 value is 24k, r2 value is 6.8k. for 240vac power supply system, r1 value is 100k, r2 value is 27k. note2: c1 value range is 22uf to 68uf. d3 in4148 r1 24k 1/2w* acl acn to94 universal timer to drive relay &buz with one button q2 2n5551 k1 q1 2n5551 r3 1.8k d1 in4007 r2 c1 22uf/16v * s1 reset 120v/240v 6.8k 1/2w* c2 104 load c3 10uf/100v d2 in4007 vcc b1 20mm r4 8.2k 27k 1/2w* 100k 1/2w* or on/off 1 2 3 4 vcc gnd disc relay u1 pt8a2524/5_34/5 *note1: for 120vac power supply system, r1 value is 24k, r2 value is 6.8k. for 240vac power supply system, r1 value is 100k, r2 value is 27k. note2: c1 value range is 22uf to 68uf. operation illustration of entering into and exiting quick test mode real timer qtm timer 15m 2s 30m 4s 45m 6s 60m 8s 90m 10s 120m 12s 4h 14s 8h 16s compare table: real timer and qtm timer
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| 2013-12-0013 pt0266-5 01/03/14 5 pt8a2524-26/34-36/44-46 universal timer controller d3 in4007 r1 24k 1/2w* acl acn s1 on to94 universal timer to drive relay with two buttons q2 2n5551 k1 q1 2n5551 r3 10k d1 in4007 r2 27k 1/2w* c1 22uf/16v* s2 off 120v/240v 100k 1/2w* 6.8k 1/2w* c2 104 load c3 10uf/100v d2 in4007 1 2 3 4 vcc gnd disc relay u1 pt8a2526-pt8a2536 *note1: for 120vac power supply system, r1 value is 24k, r2 value is 6.8k. for 240vac power supply system, r1 value is 100k, r2 value is 27k. note2: c1 value range is 22uf to 68uf. d3 in4007 r1 24k 1/2w* acl acn dip8 universal timer to drive relay with one button q2 2n5551 k1 q1 2n5551 r3 10k d1 in4007 r2 27k 1/2w* c1 22uf/16v* s1 reset or on/off 120v/240v 100k 1/2w* 6.8k 1/2w* c2 104 load c3 10uf/100v d2 in4007 vcc ts1 2 ts0 3 ts2 1 gnd 4 disc 5 relay 6 acsel 7 vcc 8 u1 pt8a2544/5pe *note1: for 120vac/60hz power supply system, r1 value is 24k , r2 value is 6.8k, acsel is connected to gnd or floating. for 240vac/50hz power supply system, r1 value is 100k, r2 value is 27k, acsel is connected to vcc. *note2: ts0, ts1 and ts2 are floating, the timer time out is 60 minutes. note3: c1 value range is 22uf to 68uf.
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| 2013-12-0013 pt0266-5 01/03/14 6 pt8a2524-26/34-36/44-46 universal timer controller d3 in4148 r1 24k 1/2w* acl acn dip8 universal timer to drive relay &buz with one button q2 2n5551 k1 r3 1.8k d1 in4007 r2 27k 1/2w* c1 22uf/16v s1 reset or on/off 120v/240v 100k 1/2w* 6.8k 1/2w* c2 104 lo ad c3 10uf/100v d2 in4007 vcc ts1 2 ts0 3 ts2 1 gnd 4 disc 5 relay 6 acsel 7 vcc 8 u1 pt8a2544/5pe r4 8.2k q1 2n5551 b1 buzze r *note1: for 120vac/60hz power supply system, r1 value is 24k , r2 value is 6.8k, acsel is connected to gnd or floating. for 240vac/50hz power supply system, r1 value is 100k, r2 value is 27k, acsel is connected to vcc. *note2: ts0, ts1 and ts2 are floating, the timer time out is 60 minutes. note3: c1 value range is 22uf to 68uf. d3 in4007 r1 24k 1/2w* acl acn s1 on dip8 universal timer to drive relay with two buttons q2 2n5551 k1 q1 2n5551 r3 10k d1 in4007 r2 27k 1/2w* c1 22uf/16v* s2 off 120v/240v 100k 1/2w* 6.8k 1/2w* c2 104 load c3 10uf/100v d2 in4007 vcc ts1 2 ts0 3 ts2 1 gnd 4 disc 5 relay 6 acsel 7 vcc 8 u1 pt8a2546pe *note1: for 120vac/60hz power supply system, r1 value is 24k, r2 value is 6.8k, acsel is connected to gnd or floating. for 240vac/50hz power supply system, r1 value is 100k, r2 value is 27k, acsel is connected to vcc. *note2: ts0, ts1 and ts2 are floating, the timer time out is 60 minutes. note3: c1 value range is 22uf to 68uf.
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| 2013-12-0013 pt0266-5 01/03/14 7 pt8a2524-26/34-36/44-46 universal timer controller mechanical information to94-4l
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| 2013-12-0013 pt0266-5 01/03/14 8 pt8a2524-26/34-36/44-46 universal timer controller dip-8l
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| 2013-12-0013 pt0266-5 01/03/14 9 pt8a2524-26/34-36/44-46 universal timer controller soic-8l
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| 2013-12-0013 pt0266-5 01/03/14 10 pt8a2524-26/34-36/44-46 universal timer controller ordering information ordering no. package code package pt8a2524xne* n lead free to-94 PT8A2525xne* n lead free to-94 pt8a2526xne* n lead free to-94 pt8a2534xne* n lead free to-94 pt8a2535xne* n lead free to-94 pt8a2536xne* n lead free to-94 pt8a2544pe* p lead free dip-8 pt8a2545pe* p lead free dip-8 pt8a2546pe* p lead free dip-8 pt8a2544we w lead free and green soic-8 pt8a2545we w lead free and green soic-8 pt8a2546we* w lead free and green soic-8 note: z ?x? shows a~h with different internal timer, see below suffix x: internal timer table. z e = pb-free or pb-free & green z adding x suffix= tape/reel z *contact pericom for availability. function comparison table part no one/two key button 50/60 hz part no one/two key button 50/60 hz pt8a2524x one reset 50hz pt8a2534x one reset 60hz PT8A2525x one on/off 50hz pt8a2535x one on/off 60hz pt8a2526x two on, off 50hz pt8a2536x two on, off 60hz part no one/two key button 50/60 hz timer(min) pt8a2544 one reset optional optional pt8a2545 one on/off optional optional pt8a2546 two on, off optional optional suffix x: internal timer table suffix a b c d e f g h internal timer(min) 15 30 45 60 90 120 240 480 pericom semiconductor corporation y 1-800-435-2336 y www.pericom.com pericom reserves the right to make changes to its products or sp ecifications at any time, without notice, in order to improve d esign or performance and to supply the best possible product. pericom does not assume any responsibility for use of any circuitry described other than the circuit ry embodied in pericom product. the company makes no representations that circuitry described herein is free from patent infringement or other rights, of pericom.
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