General Description

The RT9202B is a single power supply PWM DC-DC converter controller designed to drive N-MOSFET in a synchronous buck topology. The IC integrates the control, output adjustment, monitoring and protection functions in a small 8-pin package.

Features

Operate From 5V

0.8V Internal Reference

Drive TwoN-MOSFETs

Voltage Mode PWM Control

Fast Transient Response

Fixed 300kHz Oscillator Frequency

Full 0 to 100 Duty Cycle

Internal Soft Start

Adaptive Non-Overlapping Gate Driver

Over-Current Monitor Uses MOSFET RDS(ON)

Over-Voltage Protection Uses Low-Side MOSFET

RoHS Compliant and 100 Lead (Pb)-Free

Applications

Motherboard Power Regulation for Computers

Subsystems Power Supplies

Cable Modems, Set Top Box, and DSL Modems

DSP and Core Communications processor Supplies

Memory Power Supplies

Personal Computer Peripherals

Industrial Power Supplies

5V-InputDC-DC Regulators

LowVoltage Distributed Power Supplies