BQ24165_14 Datasheet, PDF (2/38 Pages) Texas Instruments – 2.5A, Dual-Input, Single Cell Switch Mode Li-Ion Battery Charger with Power Path Management

bq24165
bq24166
bq24167
SLUSAP4B – DECEMBER 2011 – REVISED MARCH 2013
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
DESCRIPTION (CONTINUED)
The power path management feature allows the bq24165/166/167 to power the system from a high efficiency DC
to DC converter while simultaneously and independently charging the battery. The charger monitors the battery
current at all times and reduces the charge current when the system load requires current above the input
current limit. This allows for proper charge termination and timer operation. The system voltage is regulated to
the battery voltage but will not drop below 3.5V. This minimum system voltage support enables the system to run
with a defective or absent battery pack and enables instant system turn-on even with a totally discharged battery
or no battery. The power-path management architecture also permits the battery to supplement the system
current requirements when the adapter cannot deliver the peak system currents. This enables the use of a
smaller adapter. The 2.5A input current capability allows for GSM phone calls as soon as the adapter is plugged
in regardless of the battery voltage.
The battery is charged in three phases: conditioning, constant current and constant voltage. In all charge phases,
an internal control loop monitors the IC junction temperature and reduces the charge current if the internal
temperature threshold is exceeded. Additionally, the bq24166 and bq24167 offer a voltage-based battery pack
thermistor monitoring input (TS) that monitors battery temperature for safe charging. The TS function for
bq24166 is JEITA compatible.
PART NUMBER
bq24165YFFR
bq24165YFFT
bq24165RGER
bq24165RGET
bq24166YFFR
bq24166YFFT
bq24166RGER
bq24166RGET
bq24167YFFR
bq24167YFFT
bq24167RGER
bq24167RGET
USB OVP
6.5V
6.5 V
6.5V
6.5 V
6.5 V
6.5 V
6.5 V
6.5 V
6.5 V
6.5 V
6.5 V
6.5 V
IN OVP
10.5 V
10.5 V
10.5 V
10.5 V
10.5 V
10.5 V
10.5 V
10.5 V
10.5 V
10.5 V
10.5 V
10.5 V
ORDERING INFORMATION
NTC MONITORING (TS)
JEITA COMPATIBLE
No
Yes
No
Yes
No
Yes
No
Yes
Yes
No
Yes
No
Yes
No
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Package
WCSP
WCSP
QFN
QFN
WCSP
WCSP
QFN
QFN
WCSP
WCSP
QFN
QFN
2
Submit Documentation Feedback
Copyright © 2011–2013, Texas Instruments Incorporated
Product Folder Links: bq24165 bq24166 bq24167