PWM Control Circuit

The SL 494 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

· Complete PWM Power Control Circuitry

· Uncommitted Outputs for 200 mA Sink or Source

· Output Control Selects Single -Ended or Push-Pull Operation

· Internal Circuitry Prohibits Double Pulse at Either Output

· Internal Regulator Provides a Stable 5 V Reference Supply

· Variable Dead-Time Provides Control Over Total Range