TL494C

Product Overview

TL494C is a Texas Instruments PWM (Pulse Width Modulation) controller IC designed for switching power supply and power conversion applications. The device integrates all essential functions required for PWM control circuits, including two error amplifiers, an adjustable oscillator, dead-time control comparator, pulse-steering flip-flop, 5V reference regulator and output control circuits. With flexible single-ended or push-pull operation modes and 200mA output drive capability, TL494C is widely used in SMPS, DC-DC converters, inverters, battery chargers and power management systems. 

Key Features

• Manufacturer: Texas Instruments

• Part Number: TL494C

• Device Type: PWM Controller IC

• Product Category: Switching Power Supply Controller

• Control Mode: Voltage Mode PWM Control

• Topology Support: Push-pull and single-ended operation

• Operating Voltage Range: 7V to 40V

• Reference Voltage Output: 5V ±5%

• Output Current Capability: 200mA source/sink current

• Oscillator Frequency: Up to 300kHz

• Duty Cycle Range: Adjustable up to approximately 45%

• Error Amplifiers: Two integrated error amplifiers

• Dead-Time Control: Adjustable dead-time control circuit

• Soft Switching Support: Integrated PWM control functions

• Internal Oscillator: Adjustable timing control

• Output Control: Selectable single-ended or push-pull mode

• Synchronization: External synchronization capability

• Protection Function: Pulse-by-pulse limiting through control circuitry

• Temperature Range: 0°C to +70°C

• Package Type: DIP-16 / SOIC-16 options

• Mounting Type: Through-hole or surface mount

• Application: Power supply regulation and conversion

• Typical Applications: ATX power supplies, DC-DC converters, inverters, battery chargers and motor controllers

• Technology: Bipolar analog PWM controller

• Lifecycle Status: Legacy but widely used PWM controller

• Ordering / Packaging Note: Verify suffix, package type, date code and manufacturer marking before procurement.

Applications

TL494C is mainly used in switch-mode power supply and power conversion designs requiring stable PWM control. Typical applications include computer power supplies, DC-DC converters, UPS systems, solar inverters, battery chargers, industrial power supplies and motor control circuits. 

Quality & Sourcing

Antrex Electronics can support TL494C sourcing with stock verification, RFQ quotation, manufacturer confirmation, package inspection, date code review and shipment arrangement. As a classic PWM controller IC, TL494C remains widely used for maintenance, replacement and legacy power supply designs.

Quality support can include marking inspection, visual inspection, electrical testing coordination and third-party verification when required. OEM power supply manufacturers, repair centers, industrial equipment suppliers and electronic component buyers are welcome to submit sourcing requests for TL494C and other power management ICs.