Product Summary

The TL494CD is a fixed frequency, pulse width modulation control circuit designed primarily for SWITCHMODE power supply control.

Parametrics

TL494CD absolute maximum ratings: (1)Power Supply Voltage VCC: 42 V; (2)Collector Output Voltage VC1, VC2: 42 V; (3)Collector Output Current (Each transistor)IC1, IC2: 500 mA; (4)Amplifier Input Voltage Range VIR: –0.3 to +42 V; (5)Power Dissipation @ TA 3 45℃ PD: 1000 mW; (6)Thermal Resistance, Junction–to–Ambient RqJA: 80 ℃/W; (7)Operating Junction Temperature TJ: 125 ℃; (8)Storage Temperature Range Tstg: –55 to +125 ℃; (9)Operating Ambient Temperature Range TA: 0 to +70 ℃; (10)Derating Ambient Temperature TA: 45 ℃.

Features

TL494CD features: (1)Complete Pulse Width Modulation Control Circuitry; (2)On–Chip Oscillator with Master or Slave Operation; (3)On–Chip Error Amplifiers; (4)On–Chip 5.0 V Reference; (5)Adjustable Deadtime Control; (6)Uncommitted Output Transistors Rated to 500 mA Source or Sink; (7)Output Control for Push–Pull or Single–Ended Operation; (8)Undervoltage Lockout.

Diagrams

TL494CD pin connection

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
TL494CD
TL494CD

Texas Instruments

Voltage Mode PWM Controllers PWM Controller

Data Sheet

0-1: $0.35
1-25: $0.31
25-100: $0.24
100-250: $0.24
TL494CDBRE4
TL494CDBRE4

Texas Instruments

Voltage Mode PWM Controllers Control Circuit

Data Sheet

Negotiable 
TL494CDBRG4
TL494CDBRG4

Texas Instruments

Voltage Mode PWM Controllers PWM Control Circuit

Data Sheet

Negotiable 
TL494CDE4
TL494CDE4

Texas Instruments

Voltage Mode PWM Controllers Control Circuit

Data Sheet

0-1: $0.36
1-25: $0.28
25-100: $0.25
100-250: $0.22
TL494CDG4
TL494CDG4

Texas Instruments

Voltage Mode PWM Controllers PWM Control Circuit

Data Sheet

0-1: $0.36
1-25: $0.28
25-100: $0.25
100-250: $0.22
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 
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