General Description

The RT8289 is a step-down regulator with an internal Power MOSFET. It achieves 5A of continuous output current over a wide input supply range with excellent load and line regulation. Current mode operation provides fast transient response and eases loop stabilization.

Features

High Output Current up to 5A

Internal Soft-Start

100mΩ Internal Power MOSFET Switch

Internal Compensation Minimizes External Parts Count

High Efficiency up to 90%

25μA Shutdown Current

Fixed 500kHz Frequency

Thermal Shutdown Protection

Cycle-by-Cycle Over Current Protection

Wide 5.5V to 32V Operating Input Range

Adjustable Output Voltage from 1.222V to 26V

Available in an SOP-8 (Exposed Pad) Package

RoHS Compliant and Halogen Free

Applications

Distributive Power Systems

LCD TV

DSL Modems

Pre-regulator for Linear Regulators

Battery Charger