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IRU3038 Datasheet SYNCHRONOUS PWM CONTROLLER

Manufacturer: International Rectifier (now Infineon)

General Description

The IRU3038 controller IC is designed to provide a low cost synchronous Buck regulator for voltage tracking applications such DDR memory and general purpose on-board DC to DC converter.

Modern micro processors combined with DDR memory, need high-speed bandwidth data bus which requires a particular bus termination voltage.

This voltage will be tightly regulated to track the half of chipset voltage for best performance.

Overview

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Key Features

  • Synchronous Controller in 14-Pin Package Operating with single 5V or 12V supply voltage 200KHz to 400KHz operation set by an external resistor Soft-Start Function Fixed Frequency Voltage Mode 500mA Peak Output Drive Capability Uncommitted Error Amplifier available for DDR voltage tracking.