HomedatasheetTL494IDE4

TL494IDE4 Datasheet

Voltage Mode PWM Controllers
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Description

The TL494IDE4 incorporates all the functions required in the construction of a pulse-width-modulation (PWM) control circuit on a single chip. Designed primarily for power-supply control, this device offers the flexibility to tailor the power-supply control circuitry to a specific application. The TL494IDE4 contains two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, a 5-V, 5%-precision regulator, and output-control circuits. The error amplifiers exhibit a common-mode voltage range from –0.3 V to VCC – 2 V. The dead-time control comparator has a fixed offset that provides approximately 5% dead time. The on-chip oscillator can be bypassed by terminating RT to the reference output and providing a sawtooth input to CT, or it can drive the common circuits in synchronous multiple-rail power supplies. The uncommitted output transistors provide either common-emitter or emitter-follower output capability. The TL494IDE44 provides for push-pull or single-ended output operation, which can be selected through the output-control function. The architecture of this device prohibits the possibility of either output being pulsed twice during push-pull operation. TL494IDE4 Features • Complete PWM Power-Control Circuitry• Uncommitted Outputs for 200-mA 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 5-V Reference Supply With 5% Tolerance• Circuit Architecture Allows Easy Synchronization
Features

Parameters

[{"Name":" Output Voltage:","Value":"40 V"},{"Name":"Output Current:","Value":"200 mA"},{"Name":"Switching Frequency:","Value":"300 kHz"},{"Name":"Maximum Operating Temperature:","Value":"+ 85 C"},{"Name":"Minimum Operating Temperature:","Value":"- 40 C"},{"Name":" Fall Time:","Value":"40 ns"},{"Name":"Rise Time:","Value":"100 ns"},{"Name":"","Value":""},{"Name":"","Value":""},{"Name":"","Value":""}]

Manufacturer information

SEIKO INSTRUMENTS

Seiko Instruments Inc. Is a Japanese company which head office is located in 8, Nakase 1-chome, Mihama-ku, Chiba-shi, Chiba 261-8507, Japan . It’s business lines are: Watches Business Watches, Watch Movements Electronic Components Business Quartz crystals, Micro batteries, etc. Precision Mechatronics Business Inkjet printer heads, Hard disk components, Thermal printers, Compact precision components, Machine tools, FA, Musical instrument accessories, Radiation detection and measurement systems, etc.


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