BQ25872 Datasheet, PDF (58/68 Pages) Texas Instruments – Battery Switch Charger

bq25872
SLUSCQ6 – OCTOBER 2016
9 Application and Implementation
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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 the device configured as an I²C controlled device and another switch mode
charger for Li-Ion and Li-polymer batteries used in a wide range of smart phones and other portable devices. A
host controls which charger is enabled during the charging process.
9.2 Typical Application
Power Supply
Connector
Host
VSYS
1 PF
VREF
103 AT
5.23 kŸ
Switch-Mode
Charger
VBUS SW
SDA/
SCL
SYS
GND BAT
System
10 PF
(1)
EN
SDA ^VOUT
SCL BATP
CHGSTAT
BATN
INT
VBUS ^SRP
100 :
100 :
Battery
Pack
SRN
OVPGATE
VUSB
TS_BAT
TS_VUSB
GND
VREF
5.23 kŸ
30.1 kŸ
103 AT
30.1 kŸ
Copyright © 2016, Texas Instruments Incorporated
Figure 55. bq25872 Typical Application
58
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