TL494 Datasheet | HTC KOREA

FEATURES - plete PWM Power Control Circuitry - Unmitted Outputs for 200m A Sink or Source Current - Output Control Selects Single-Ended or Push-Pull Operation - Internal Circuitry Prohibits Double Pulse at Either Output - Variable Dead-Time Provides Control over Total Range - Internal Regulator Provides a Stable 5V Reference Supply - Circuit Architecture Allows Easy Synchronization - Available in SOP-16 and DIP-16 Packages SOP-16 DESCRIPTION The TL494 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, this device offers the systems engineer the flexibility to tailor the power supply control circuitry to one’s application. The TL494 contains an error amplifier, an on-chip adjustable oscillator, a dead-time control parator, pulse-steering control flip-flop, a 5 volt precision regulator, and output-control circuits. The error amplifier exhibits a mon-mode voltage range from - 0.3 volts to VCC- 2 volts. The dead-time control parator has a fixed offset that provides approximately 5% dead time when externally altered. The on-chip oscillator may be bypassed by terminating RT (pin 6) to the reference output and providing a sawtooth input to CT (pin 5), or it may be used to drive the mon circuits in synchronous multiple-rail power supplies. The unmitted output transistors provide either mon-emitter or emitterfollower output capability. Each Device provides for pushpull or single-ended output operation, which may be selected through the output-control function. The architecture of these devices prohibits the possibility of either output being pulsed twice during push-pull operation. DIP-16 ORDERING INFORMATION Device TL494D TL494GD TL494N Package SOP-16 SOP-16 DIP-16 Apr. 2022 - R1.7 1/10 Pulse Width Modulation Control Circuits ABSOLUTE MAXIMUM RATINGS (Note 1) CHARACTERISTIC SYMBOL Supply Voltage Amplifier Input...