BQ24230H_14 Datasheet, PDF (11/38 Pages) Texas Instruments – USB-Friendly Lithium-Ion Battery Charger and Power-Path Management IC

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Detailed Description
bq24230H
bq24232H
SLUSBI8 – JANUARY 2014
Overview
The bq2423xH devices are integrated Li-ion linear chargers and system power-path management devices
targeted at space-limited portable applications. The device powers the system while simultaneously and
independently charging the battery. This feature reduces the number of charge and discharge cycles on the
battery, allows for proper charge termination, and enables the system to run with a defective or absent battery
pack. It also allows instant system turnon even with a totally discharged battery. The input power source for
charging the battery and running the system can be an AC adapter or a USB port. The devices feature dynamic
power-path management (DPPM), which shares the source current between the system and battery charging
and automatically reduces the charging current if the system load increases. When charging from a USB port,
the input dynamic power management (V_IN-DPM) circuit reduces the input current limit if the input voltage falls
below a threshold, preventing the USB port from crashing. The power-path architecture also permits the battery
to supplement the system current requirements when the adapter cannot deliver the peak system currents.
Copyright © 2014, Texas Instruments Incorporated
Product Folder Links: bq24230H bq24232H
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