TL494 PWM Controller IC

The TL494 is a versatile, fixed-frequency pulse-width modulation (PWM) controller IC widely used in switching power supply design, DC-DC converters, and motor control circuits. Built around a flexible architecture, it integrates all the functions required for the control of a switching power supply into a single 16-pin DIP package.

Key Features:

• Dual output transistors for push-pull or single-ended operation
• Adjustable oscillator frequency (1 Hz to 300 kHz) via external R and C components
• Two error amplifiers for precise voltage and current regulation
• Internal 5V reference voltage (±5% accuracy)
• Dead-time control for safe switching transitions
• Compatible with 7V to 40V supply voltage range

Ideal For:

• SMPS (Switch Mode Power Supply) design
• Solar charge controllers
• DC motor speed control
• Inverter circuits and UPS systems
• Electronics training and embedded systems projects