RT2872GSP

Evaluation Board

EVB_RT2872GSP-00

June 2015

http://www.richtek.com

your power partner.

Introduction

General Product Description

The RT2872 is a high efficiency, current mode synchronous step-down DC/DC converter that can deliver up to 3A

output current over a wide input voltage range from 4.5V to 36V. The device integrates a 105

mΩ high side and an

80mΩ low side MOSFET to achieve high conversion efficiency up to 95%. The current mode control architecture

supports fast transient response and uses a simple compensation circuit.

A cycle-by-cycle current limit function provides protection against a shorted output and an internal soft-start

eliminates input surge current during start-up. The RT2872 provides complete protection functions such as input

under voltage lockout, output under voltage protection, over current protection and thermal shutdown.

The RT2872 is available in the thermal enhanced SOP-8 (Exposed Pad) package.

Product Features



4.5V to 36V Input Voltage Range



3A Output Current



Internal N-MOSFETs



Current Mode Control



Frequency Operation : 300kHz to 1MHz



Adjustable Output Voltage from 0.8V to 30V



High Efficiency Up to 95%



Stable with Low ESR Ceramic Output Capacitors



Cycle-by-Cycle Current Limit



AEC-Q100 Grade 3 Certification

Application



Point of Load Regulator in Distributed Power Systems



Digital Set Top Boxes



Broadband Communications



Vehicle Electronics



Automotive Audio, Navigation, and Information Systems



Enterprise Datacom Platforms Point of Load (POL)



Industrial Grade General Purpose Point of Load