Product Summary

The TL494IN is a voltage regulator. It 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 TL494IN 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 TL494IN is characterized for operation from –40℃ to 85℃.

Parametrics

TL494IN absolute maximum ratings: (1)Supply voltage: 41V; (2)Amplifier input voltage: VCC +0.3V; (3)Collector output voltage: 41V; (4)Collector output current: 250 mA; (5)Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: 260℃; (6)Storage temperature range: –65 to 150℃.

Features

TL494IN features: (1)Complete PWM Power-Control Circuitry; (2)Uncommitted Outputs for 200-mA Sink or Source Current; (3)Output Control Selects Single-Ended or Push-Pull Operation; (4)Internal Circuitry Prohibits Double Pulse at Either Output; (5)Variable Dead Time Provides Control Over Total Range; (6)Internal Regulator Provides a Stable 5-V Reference Supply With 5% Tolerance; (7)Circuit Architecture Allows Easy Synchronization.

Diagrams

TL494IN FUNCTIONAL BLOCK DIAGRAM 

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
TL494IN
TL494IN
Texas Instruments
Voltage Mode PWM Controllers PWM Controller
Data Sheet
0-1: $0.38
1-25: $0.34
25-100: $0.26
100-250: $0.26
TL494INE4
TL494INE4
Texas Instruments
Voltage Mode PWM Controllers Control Circuit
Data Sheet
0-1: $0.39
1-25: $0.31
25-100: $0.27
100-250: $0.23
TL494ING
TL494ING
ON Semiconductor
Voltage Mode PWM Controllers 40kHz 200mA PWM w/48% Duty Cycle Max
Data Sheet
0-1: $0.55
1-25: $0.43
25-100: $0.37
100-500: $0.28