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GL48B4, GL494, GL494D

Table of contents:
Info of GL48B4
Info of GL494
Info of GL494D

GL48B4, GL494, GL494D Selling Leads, Datasheet

MFG:HYNIX Package Cooled:DIP D/C:08+/09+

GL48B4, GL494, GL494D Datasheet download

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Part Number: GL48B4

MFG: HYNIX

Package Cooled: DIP

D/C: 08+/09+

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GL494 General 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.

GL494 Maximum Ratings

Supply Voltage, V_CC ........................ 41 V
Amplifier Input Voltage ................... V_CC +0.3 V
Collector Output Voltage ......................41 V
Continuous Total dissipation at (or below) 25 °C ...... 1000 mW
Operating Free-Air Temperature Range ......... -20 to 85 °C
Storage Temperature Range............... -65 to 150 °C
Collector Output Current .................... 250 mA

GL494 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

GL494 Connection Diagram

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