BQ24725ARGRT datasheet(13/47 Pages) TI1

Part #	BQ24725ARGRT

Description	1-4 Cell Li Battery SMBus Charge Controller with N-Channel Power MOSFET Selector and Advanced Circuit Protection

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Manufacturer	TI1 [Texas Instruments]

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bq24725A

www.ti.com

SLUSAL0A – SEPTEMBER 2011 – REVISED AUGUST 2014

8 Detailed Description

8.1 Overview

The bq24725A is a 1-4 cell battery charge controller with power selection for space-constrained, multi-chemistry

portable applications such as notebook and detachable ultrabook. It supports wide input range of input sources

from 4.5V to 24V, and 1-4 cell battery for a versatile solution.

The bq24725A supports automatic system power source selection with separate drivers for n-channel MOSFETS

on the adapter side and battery side.

The bq24725A features Dynamic Power Management (DPM) to limit the input power and avoid AC adapter over-

loading. During battery charging, as the system power increases, the charging current will reduce to maintain

total input current below adapter rating.

The SMBus controls input current, charge current and charge voltage registers with high resolution, high

accuracy regulation limits.

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