Pulse Width Modulation (PWM) Controller IC SG3525

Description

The SG3525 is a voltage-mode PWM controller IC designed for controlling switching power supplies, DC-DC converters, inverters, and other power electronics systems. It integrates the essential functions of a PWM controller — including oscillator, reference, soft-start control, under voltage lockout, and high-current totem-pole outputs — reducing external components and complexity in power conversion designs.

FEATURES

• Supply Voltage (VCC): ~8 V to 35 V operating range
• Reference Voltage: ~5.1 V ±1%
• Oscillator Frequency Range: ~100 Hz to ~400 kHz
• Output Current (Totem-Pole): ~200 mA to ~400 mA peak
• Under voltage Lockout: Yes, built-in
• Operating Temperature Range: Typically –40 °C to +85 °C

SPECIFICATION

• Dimension: 9.9 × 3.9 × 1.27 mm
• Additional information
• Gross weight: 0.5 g
• Manufacturer part number: SG3525