SL494 Datasheet (System Logic Semiconductor)

SL494, PWM Control Circuit

SL494 PWM Control Circuit The SL494 incorporates on a single monolithic chip all the functions required in the construction of a pulse-width-modulation control circuit.

Designed primarily for power supply control, the SL494 contains an on-chip 5-volt regulator, two error amplifiers, adjustable oscillator, dead-time control comparator, pulse-steering flip-flop, and output-control circuitry.

The uncommitted output transistors provide either common-emitter or emitter-follower output capability.