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INTEGRATED CIRCUITS DATA SHEET TDA1023/T Proportional-control triac triggering circuit Product specification Supersedes data of August 1982 File under Integrated Circuits, IC02 May 1991 Philips Semiconductors Product specification Proportional-control triac triggering circuit FEATURES · Adjustable width of proportional range · Adjustable hysteresis · Adjustable width of trigger pulse · Adjustable repetition timing of firing burst · Control range translation facility · Fail safe operation · Supplied from the mains · Provides supply for external temperature bridge GENERAL DESCRIPTION APPLICATIONS · Panel heaters · Temperature control TDA1023/T The TDA1023 is a bipolar integrated circuit for controlling triacs in a proportional time or burst firing mode. Permitting precise temperature control of heating equipment it is especially suited to the control of panel heaters. It generates positive-going trigger pulses but complies with regulations regarding mains waveform distortion and RF interference. QUICK REFERENCE DATA SYMBOL VCC VZ I16(AV) tw Tb -IOH(1) Tamb Note 1. Negative current is defined as conventional current flow out of a device. A negative output current is suited for positive triac triggering. ORDERING INFORMATION EXTENDED TYPE NUMBER TDA1023 TDA1023T Note 1. TDA1023: 16 DIL; plastic (SOT38); SOT38-1; 1996 November 27. 2. TDA1023T: 16 mini-pack; plastic (SO16; SOT109A); SOT109-1; 1996 November 27. PACKAGE PINS 16 16 PIN POSITION DIL mini-pack MATERIAL plastic plastic CODE SOT38(1) SO16; SOT109A(2) PARAMETER supply voltage (derived from mains voltage) stabilized supply voltage for temperature bridge supply current (average value) trigger pulse width firing burst repetition time at CT = 68 µF output current operating ambient temperature range MIN. TYP. - - - - - - -20 13.7 8 10 200 41 - - MAX. - - - - - 150 +75 UNIT V V mA µs s mA °C May 1991 2 Philips Semiconductors Product specification Proportional-control triac triggering circuit TDA1023/T Fig.1 Block diagram. PINNING SYMBOL Rpd handbook, halfpage PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 DESCRIPTION internal pull-down resistor not connected output hysteresis control input proportional range control input control input unbuffered reference input output of reference buffer buffered reference input pulse width control input reference supply output firing burst repetition time control input ground positive supply not connected external resistor connection n.c. Rpd 1 n.c. 2 Q 3 HYS 4 16 RX 15 n.c. 14 VCC Q HYS PR CI UR QR BR PW VZ TB VEE VCC TDA1023 PR 5 CI 6 UR 7 QR 8 MBA484 13 VEE 12 TB 11 VZ 10 PW 9 BR Fig.2 Pin configuration. n.c. RX May 1991 3 Philips Semiconductors Product specification Proportional-control triac triggering circuit FUNCTIONAL DESCRIPTION The TDA1023 generates pulses to trigger a triac. These pulses coincide with the zero excursions of the mains voltage, thus minimizing RF interference and mains supply transients. In order to gate the load