The FAN5070M is a synchronous buck PWM controller from Fairchild/ON Semiconductor. It is designed for high-efficiency, step-down DC-DC conversion applications. This controller is commonly used in power supplies for computers, servers, and other electronic devices that require efficient voltage regulation.

Applications

• Desktop PC motherboards
• Server power supplies
• Notebook computers
• Graphics cards
• Networking equipment

Features

• Synchronous rectification
• Voltage-mode PWM control
• Over-current protection
• Under-voltage lockout
• Soft-start function

Benefits

• High efficiency
• Stable voltage regulation
• Protection against damage from over-current and under-voltage conditions
• Smoother startup operation

Specifications

The FAN5070M operates with an input voltage range of 4.5V to 13.2V and provides an adjustable output voltage. It supports synchronous rectification to improve efficiency. It includes over-current protection (OCP) and under-voltage lockout (UVLO) features for robust operation. The switching frequency is adjustable up to 500kHz. The controller is available in an 8-SOIC package.