Description

The IR3628 is a PWM controller designed for high performance synchronous Buck DC/DC applications. The IR3628 drives a pair of external N-MOSFETs using a fixed 600kHz switching frequency allowing the use of small external components. The output voltage can be precisely regulated using the internal 0.6V reference voltage for low voltage applications. IR3628 provides an efficient solution for high-speed bandwidth data bus which requires a particular tracking scheme for best performance using the uncommitted error amplifier.

Features

• Internal 600kHz Oscillator

• Operates with Single 5V or 12V Supply

• Programmable Over Current Protection

• Hiccup Current Limit Using MOSFET RDS(on) sensing

• Tracking for memory application

• Precision Reference Voltage (0.6V)

• Programmable Soft-Start

• Pre-Bias Start-up

• Thermal Protection

• 12-Lead 3x4mm MLPD Package

Applications

• DDR Application

• Storage Systems

• Embedded Telecom Systems

• Distributed Point of Load Power Architectures

• Computing Peripheral Voltage Regulator

• Graphics Card

• General DC/DC Converters