BQ24266_15 Datasheet, PDF (26/41 Pages) Texas Instruments – bq24266 3A, 30V Standalone Single-Input, Single-Cell Switchmode Li-Ion Battery Charger

bq24266
SLUSBY5F – JUNE 2014 – REVISED AUGUST 2015
8 Applications 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.
8.1 Application Information
The bq24266EVM-609 evaluation module (EVM) is a complete charger module for evaluating the bq24266. The
application curves were taken using the bq24266EVM-609 (SLUUB40). See Related Documentation .
The bq24266EVM is shipped with the bq24266 populated, For the bq24266, the TS input is available and the
resistors are chosen using Equation 3 and Equation 4.
8.2 Typical Applications
8.2.1 Typical Application, External Discharge FET
IN
VBUS
D+
D-
GND
4.7µ F
1.5µ H
SW
PGND
PMID
1µ F
BOOT
SYS
0.033µ F
10µ F
>10µ F
System
Load
26.7kŸ
VDPM
BGATE
10kŸ
DRV
BAT
TS
1µ F
V_DRV
5.62kŸ
TEMP
PACK+
HOST
2.2µ F
bq24266 ^ISET
12.4kŸ
PACK-
400Ÿ
PG
1.5kŸ
CHG
1.5kŸ
CE
IUSB1
IUSB2
GPIO
GPIO
GPIO
GPIO
IUSB3
GPIO
Figure 14. bq24266 Typical Application Circuit
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