Li-ion charge controller supports large-current

Li-ion charge controller supports large-current

The R2A20057BM Li-ion battery charge controller for mobile devices that use one cell Li-ion batteries, including digital still cameras and smartphones. The controller integrates a 2-MHz step-down dc/dc converter and supports 2-A current charging. It reduces the chip surface approximately 62% from earlier company solutions.

The battery charger controller reduces the mounting area by integrating multiple power MOSFETs and charging circuits in a single chip, using a wafer-level package, which can supply large amounts of current due to reduced package resistance. The 25−V on-chip input voltage-tolerance enables a built-in overvoltage protection circuit and eliminates an external overvoltage protection circuit, contributing to a substantial reduction in the mounting area. The controller automatically identifies six USB port types, including the three types stipulated in the USB Battery Charging Specification, Revision 1.2. ($4 ea — available now.)

By Paul O’Shea

Renesas Electronics America , Santa Clara , CA
Sales 800-366-9782
http://am.renesas.com