Introduction
1
Introduction
1.1
bq24261M IC Features
The bq24261M device 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 can be programmed through an I
2
C interface. Key IC
features include:
•
High-efficiency, fully-integrated, NMOS-NMOS, synchronous buck charger with 1.5-MHz frequency
•
Charge time optimizer
•
Integrated power FETs for up to 3-A charge rate
•
5-V, 1-A OTG VBUS supply
•
Power path management between battery and system voltages
For details, see the bq24261M data sheet (
1.2
bq24261M EVM Features
The bq24261M evaluation module (EVM) on PCB PWR691 provide a complete charger module for
evaluating compact, flexible, high-efficiency, USB-friendly, 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:
•
Terminal blocks and standard headers for IN, SYS, BAT, TS
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Programmable battery voltage, charge current, input current, and status via I
2
C interface
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IN operating up to 10.5 V for bq24261M
•
LED indication for status signals
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Test points for key signals available for testing purposes. Easy probe hook-up
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User's Guide for WCSP-Packaged bq24261M 3-A Battery Charger
SLUUBB5A – April 2015 – Revised October 2015
Evaluation Module
Copyright © 2015, Texas Instruments Incorporated
