Description
The GL494 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 GL494 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 pro-vide either common-emitter or emitter-follower output capability. Push-pull or single-ended output operation may be selected through the output control function. The ar-chitecture of the GL494 prohibits the possibility of either output being pulsed twice during push-pull operation.

FEATUREs
● Complete PWM Power Control Circuitry
● Uncommitted Outputs for 200mA 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 5V Reference Supply
● Variable Dead-Time Provides Control Over Total Range