BQ24232HA Datasheet, PDF (25/36 Pages) Texas Instruments – USB-Friendly Lithium-Ion Battery Charger

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8 Application and Implementation
bq24232HA
SLUSCG4 – MAY 2016
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
8.1 Application Information
The bq24232HA device power the system while simultaneously and independently charging the 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.
The bq24232HA can be configured as host controlled for selecting different input current limits based on the
input source connected; or, as a fully stand-alone device for applications that do not support multiple types of
input sources.
Copyright © 2016, Texas Instruments Incorporated
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