uC3845B,PWM Controller,SMD

The UC3845B-SMD is a high-performance current mode PWM controller designed to provide precise frequency control and efficient current limiting in power supply systems. Operating at up to 500 kHz, this controller offers exceptional control over duty cycles, making it ideal for DC-DC converters, off-line switching supplies, and various power regulation circuits. The integrated trim oscillator ensures precise frequency control, while automatic feedforward compensation and cycle-by-cycle current limiting provide robust performance in demanding applications.

With its low start-up current and under-voltage lockout features, the UC3845B-SMD ensures reliable operation, even in low-power start-up scenarios. This PWM controller comes in a compact SMD package, making it perfect for modern, space-conscious designs. Its high-current totem pole output is designed for efficient driving of N-channel MOSFETs, delivering fast switching and low power consumption.

• High-performance current mode PWM controller for efficient power regulation.
• Trimmed oscillator for precise frequency control up to 500 kHz.
• Cycle-by-cycle current limiting with automatic feedforward compensation.
• Low start-up current of less than 0.5mA for efficient power use.
• High-current totem pole output, ideal for N-channel MOSFET driving.
• Compact SMD package for easy integration in space-limited designs.