TDA8380A

INTEGRATED CIRCUITS DATA SHEET TDA8380A Control circuit for switched mode power supplies Product specification Supersedes data of October 1993 File under Integrated Circuits, IC02 November 1993 Philips Semiconductors Product specification Control circuit for switched mode power supplies GENERAL DESCRIPTION TDA8380A The TDA8380A is an integrated circuit intended for use as a control circuit in low-cost switched mode power supplies for television, monitors and small industrial equipment. The TDA8380A operates using duty factor regulation in the fixed frequency mode. Features A low-current initialization circuit (maximum 150 µA) which can be switched off A bandgap reference generator Circuitry for slow-start combined with an accurate setting of the maximum duty factor (Dmax) Programmable low supply voltage protection with one default value High supply protection circuitry Error amplifier with a transfer characteristic generator (TCG) Protection against open- and short-circuited feedback loop An overload voltage foldback Primary current protection circuitry for both cycle-by-cycle and trip mode Protection against transformer saturation A direct drive output stage (sink current 2.5 A, source current 0.75 A) Anti-double pulse logic Protected against damage as a result of a short-circuited high-voltage transistor RC oscillator with synchronization input QUICK REFERENCE DATA PARAMETER Supply voltage Supply current Output pulse repetition frequency ran...