BQ24735_17 Datasheet, PDF (13/46 Pages) Texas Instruments – 1- to 4-Cell Li+ Battery SMBus Charge Controller for Supporting Turbo Boost Mode With N-Channel Power MOSFET Selector

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9 Detailed Description
bq24735
SLUSAK9B – SEPTEMBER 2011 – REVISED APRIL 2015
9.1 Overview
The bq24735 device is a 1- to 4-cell battery charge controller with power selection for space-constrained,
multichemistry portable applications such as notebooks and detachable ultrabooks. The device supports wide
input range of input sources from 4.5 V to 24 V, and 1- to 4-cell battery for a versatile solution.
The bq24735 device supports automatic system power source selection with separate drivers for N-channel
MOSFETS on the adapter side and battery side.
The bq24735 device features Dynamic Power Management (DPM) to limit the input power and avoid AC adapter
overloading. 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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