Datasheet

Introduction

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1 Introduction

1.1 bq2427x IC Features

The bq24272/273 integrates a synchronous PWM controller, power MOSFETs, input-current sensing,

high-accuracy current and voltage regulation, charge termination and power-path management into a

small WCSP package. The charge parameters are programmable through an I

C interface. Key IC

features include:

• High-efficiency, fully integrated, NMOS-NMOS, synchronous buck charger with 1.5-MHz frequency

• Integrated power FETs for up to a 2.5-A charge rate

• Power-path management between battery and system voltages

For details, see the bq24272/273 data sheets (SLUSB09/SLUSB08).

1.2 bq24272/273 EVM Features

The bq24272/273 evaluation module (EVM) is a complete charger module for evaluating compact, flexible,

high-efficiency, switch-mode battery charge and power-path management solution for single-cell, Li-ion

and Li-polymer battery-powered systems used in a wide range of portable applications. Key EVM features

include:

• 76.2-mm × 76.2-mm × 1.2-mm footprint for entire solution

• Input power connector for AC adapter

• Programmable battery voltage, charge current, input current, and status via I

C™ interface

• IN operating range of 4.2 V – 10 V

• LED indication for status signals

• Test points for key signals available for testing purposes. Easy probe hook-up.

WCSP-Packaged bq24272/273 Evaluation Modules SLUU916–April 2012

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