9 Application and Implementation

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.

9.1 Application Information

A typical application consists of a single cell battery charger for Li-Ion, Li-polymer batteries used in a wide range

of portable devices and accessories. It integrates an input reverse-block FET (RBFET, Q1), high-side switching

FET (HSFET, Q2), and low-side switching FET (LSFET, Q3). The Buck converter output is connected to the

battery directly to charge the battery and power system loads. The device also integrates a bootstrap diode for

high-side gate drive.

9.2 Typical Applications

The typical applications in this section include a standalone charger without power path, a standalone charger

with external power path, and a typical application with MCU programmed charge current.

BQ25302

SLUSCZ3 – OCTOBER 2020

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