SG3525A

The SG3525A is a Pulse Width Modulator (PWM) control circuit from ST, designed for efficient implementation in various switching power supply applications. It operates over a wide voltage range of 8.0 V to 35 V and includes a precise 5.1 V, 1.0% trimmed internal reference voltage.

This PWM controller IC offers an oscillator frequency range from 100 Hz to 400 kHz, with a separate sync pin for external synchronization. Key features include adjustable deadtime control, input undervoltage lockout, latching PWM to prevent multiple pulses, and pulse-by-pulse shutdown for protection. It provides dual source/sink outputs capable of 400 mA peak current.

The SG3525A is housed in a DIP-16 package and is suitable for through-hole mounting. Its design aims to improve performance and reduce the external parts count required for controlling switching power supplies. The integrated error amplifier simplifies external circuitry by allowing its input common-mode voltage range to include the reference voltage.

This component is useful for applications requiring precise control over switching power supplies, such as DC/DC converters and inverters. Its features facilitate robust and efficient power conversion designs.