PT8A2524-26/34-36/44-46 Universal Timer Controller Features Description Auto-shut off output once time-out Universal timer is a mixed signal CMOS IC Button to ON/OFF/RESET timer designed for a fixed timer to drive external RELAY to Available timer with high precision same as AC implement safety power control. It is applied to 50/60hz 120V/240V and 50/60Hz AC power supply. It can Build-in RC oscillator automatically shut-off load in order to prevent undesired Drive external RELAY conditions from the system. Internal timer can present Support 50/60Hz by part several kinds of different time: 15mins, 30mins, 45mins, Quick Test Mode (QTM) for manufacturer 1hr, 1.5hrs, 2hrs, 4hrs and 8hrs, which is decided by part Available timer of 15/30/45/60/90/120/240/480min number. Buzzer function(PT8A2524/25/34/35/44/45 Applications Optional) Universal Timer Controller Low cost lead free package: TO94-4 or DIP-8 or SOIC-8 Pin Configuration PT8A2524/5/6A-H PT8A2544/5/6 PT8A2534/5/6A-H DIP-8 or SOIC-8 TO94-4(Top View) (Top View) 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 Timer selection pins(TS2 TS1 TS0 from 000~111) TS2 1 I 000: 15m, 001: 30m, 010: 45m, 011: 60m, TS1 2 I 100: 90m, 101: 120m,110: 240m,111: 480m TS0 3 I Default 011 by TS2 internal pull down, TS1&TS0 internal pull up 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 50/60Hz selection pin: default is 60Hz by internal pull down connecting to VCC is ACSEL 7 I 50Hz. VCC 8 - Power supply 2013-12-0013 PT0266-5 01/03/14 1 PT8A2524-26/34-36/44-46 Universal Timer Controller Maximum Ratings Note: o o Storage Temperature ...................................................................................... -40 C to +125 C Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the Supply Voltage to Ground Potential (Input & V Only) ............... -0.5V to V + 0.5V CC CC device. This is a stress rating only and functional Supply Voltage to Ground Potential (Output s & D/O Only) ........ -0.5V to V + 0.5V CC operation of the device at these or any other condi- DC Input Voltage ...................................................................................... -0.5V to V + 0.5V CC 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 extended periods may affect reliability. Recommended operation conditions Symbol Parameter Min Typ Max Unit V Operating Voltage 4.2 4.7 5.2 V CC T Operating temperature 0 25 85 A Electrical Characteristics Test Conditions Sym Parameter Min Typ Max Unit V Condition CC V Shunt Regulator output voltage - I =1mA 4.2 4.7 5.2 V CC CC V Input threshold(RELAY/DISC) 5V - 0.3 0.35 0.4 V TH I Output Source Current (RELAY/DISC) 5V V =0.7V -0.3 -0.5 -1 mA OH OH I Output Sink Current (RELAY/DISC) 5V V =0.5V 0.5 - - mA OL OL I Power supply current 4.0V - - - 0.5 mA CC F Frequency of internal oscillator 5V - 96 128 160 KHz OSC Block Diagram ACSEL Reference Clock extracting circuit GND circuit VCC Shunt Regulator Button sampling circuit Internal RC Oscillator DISC RELAY driving PBO circuit RELAY Timer Chain 15/30/45/60m/90m/2h/4h/8h 2013-12-0013 PT0266-5 01/03/14 2