Controlador Pwm Gl494 Dip16 Itytarg

Description
The GL494 incorporates on a single monolithic chip all the
functions required in the construction of a pulse-widthmodulation control circuit. Designed primarily for power
supply control, the GL494 contains an on-chip 5-volt
regulator, two error amplifiers, adjustable oscillator, deadtime control comparator, pulse-steering flip-flop, and
output-control circuitry. The uncommitted output
transistors pro-vide either common-emitter or emitterfollower output capability. Push-pull or single-ended
output operation may be selected through the outputcontrol function. The ar-chitecture of the GL494 prohibits
the possibility of either output being pulsed twice during
push-pull operation.
Features
ó Complete PWM Power Control Circuitry
ó Uncommitted Outputs for 200mA Sink or Source
ó Output Control Selects Single-Ended or Push-Pull
Operation
ó Internal Circuitry Prohibits Double Pulse at Either
Output
ó Internal Regulator Provides a Stable 5V Reference
Supply
ó Variable Dead-Time Provides Control Over Total
Range