TL494CN Circuit Diagram & Datasheet | Pinout onsemi

TL494CN Pinout Equivalent

1：Overview of the TL494CN：

The TL494CN is a high-performance pulse-width modulation (PWM) controller IC designed for switch-mode power supplies and DC-DC converters. As a member of Texas Instruments’ classic PWM controller series, it is widely used in industrial equipment, communication power supplies, and consumer electronics due to its high reliability and flexible configuration.Supports push-pull or single-ended output modes, with a maximum output frequency of up to 300 kHz, suitable for half-bridge, full-bridge, and forward topology configurations.

2：TL494CN Important pin function definition:

3：Alternative model recommendation

KA7500B：The KA7500B is a high-performance pulse-width modulation (PWM) control chip commonly used in switching power supply circuits. It functions similarly to chips like the TL494CN, featuring a dual-output design with built-in oscillators, error amplifiers, and comparators to achieve precise PWM control.

TL594：TL594 is a powerful pulse-width modulation (PWM) controller integrated circuit, similar to the TL494CN. It features dual-ended output capability, supporting various output modes such as push-pull and single-ended, making it suitable for switch-mode power supply designs in half-bridge, full-bridge, and forward converter topologies.

SG3524：SG3524 is a classic pulse-width modulation (PWM) controller chip widely used in switching power supplies. It integrates key modules such as an oscillator, error amplifier, and PWM comparator to generate stable and adjustable PWM signals, enabling precise control of the power output voltage and current.

Comparison of main parameters for several models