General Description

The RT8278 is a high voltage buck converter that can

support an input voltage range from 4.5V to 24V with output

current up to 2A. Current mode operation provides fast

transient response and eases loop stabilization.

Features

● Wide Operating Input Range : 4.5V to 24V

● Adjustable Output Voltage Range : 0.8V to 15V

● Output Current up to 2A

● 25μA Low Shutdown Current

● High Efficiency up to 90 at 2.2MHz

● Programmable Frequency : 220kHz to 3MHz

● Internal Soft-Start

● Stable with Low ESR Output Ceramic Capacitors

● Thermal Shutdown Protection

● Cycle-By-Cycle Over Current Protection

● RoHS Compliant and Halogen Free

Applications

● DSL Modem for ADSL2+ Standard

● Distributed Power Systems

● Pre-Regulator for Linear Regulators