BQ24262_15 Datasheet, PDF (38/56 Pages) Texas Instruments – bq2426x 3-A, 30-V, Host-Controlled Single-Input, Single-Cell Switched-Mode Li-Ion Battery Charger With Power-Path Management and USB-OTG Support

Not Recommended for New Designs : bq24260, bq24261
bq24260, bq24261, bq24261M, bq24262
SLUSBU4D – DECEMBER 2013 – REVISED APRIL 2015
10 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.
10.1 Application Information
The bq24260EVM-079 evaluation module (EVM) is a complete charger module for evaluating the bq24260. The
application curves were taken using the bq24260EVM-079. See Related Documentation for details.
The EVM supports both typical application circuits shown below through board options. Figure 28 shows the
bq24261 using PSEL for the input current limit selection. Figure 28 shows the bq24260 using D+/D– for the input
current limit selection. Figure 28 also shows the addition of an external battery FET. This external FET can be
used with the bq24260/1/1M/2 to provide lower loss discharge path from the battery, and is controlled by the
BGATE pin.
10.2 Typical Application
PMID
1.5 µH
SW
1 µF
0.033 µF
BOOT
10 µF
System
Load
VBUS
D+
D-
GND
4.7 µF
SYS
IN
10 µF
BGATE
Optional FET
2.2 µF
1.5 kŸ
USB PHY
DRV
STAT
BAT
PGND
TS
PSEL (bq24261)
1 µF
DRV
5.62 kŸ
DRV
12.4 kŸ
TEMP
PACK+
VI/O
(1.8 V)
PACK-
1.5 kŸ
HOST
D+_(bq24260)
D-
INT
SDA
SCL
CD
GPIO
SDA
SCL
GPIO
Figure 28. bq24260/1 Typical Application Circuit
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