Product Summary

The TL494CDR is a pulse-width-modulation control circuit. The TL494CDR 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, the TL494CDR offers the flexibility to tailor the power-supply control circuitry to a specific application. The TL494CDR 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.

Parametrics

TL494CDR absolute maximum ratings: (1)VCC Supply voltage: 41 V; (2)VI Amplifier input voltage VCC: + 0.3 V; (3)VO Collector output voltage: 41 V; (4)IO Collector output current: 250 mA; (5)Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: 260 ℃; (6)Tstg Storage temperature range: –65 to 150 ℃.

Features

TL494CDR 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

TL494CDR functional block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
TL494CDR
TL494CDR
Texas Instruments
Voltage Mode PWM Controllers PWM Controller
Data Sheet
0-1: $0.36
1-25: $0.25
25-100: $0.22
100-250: $0.19
TL494CDR2
TL494CDR2
ON Semiconductor
Voltage Mode PWM Controllers 40kHz 200mA PWM
Data Sheet
Negotiable 
TL494CDRG4
TL494CDRG4
Texas Instruments
Voltage Mode PWM Controllers PWM Control Circuit
Data Sheet
0-1: $0.40
1-25: $0.29
25-100: $0.25
100-250: $0.22
TL494CDRE4
TL494CDRE4
Texas Instruments
Voltage Mode PWM Controllers Control Circuit
Data Sheet
0-1: $0.34
1-25: $0.27
25-100: $0.23
100-250: $0.20
TL494CDR2G
TL494CDR2G
ON Semiconductor
Voltage Mode PWM Controllers 40kHz 200mA PWM w/48% Duty Cycle Max
Data Sheet
0-1: $0.47
1-25: $0.37
25-100: $0.32
100-500: $0.24