bq24165

bq24166

bq24167

SLUSAP4A – DECEMBER 2011 – REVISED MARCH 2012

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.

⋁⊕

ORDERING INFORMATION

PART NUMBER

USB OVP

IN OVP

NTC MONITORING (TS)

JEITA COMPATIBLE

Package

bq24165YFFR

6.5V

10.5 V

No

Yes

WCSP

bq24165YFFT

6.5 V

10.5 V

No

Yes

WCSP

bq24165RGER

6.5V

10.5 V

No

Yes

QFN

bq24165RGET

6.5 V

10.5 V

No

Yes

QFN

bq24166YFFR

6.5 V

10.5 V

Yes

No

WCSP

bq24166YFFT

6.5 V

10.5 V

Yes

No

WCSP

bq24166RGER

6.5 V

10.5 V

Yes

No

QFN

bq24166RGET

6.5 V

10.5 V

Yes

No

QFN

bq24167YFFR

6.5 V

10.5 V

Yes

Yes

WCSP

bq24167YFFT

6.5 V

10.5 V

Yes

Yes

WCSP

bq24167RGER

6.5 V

10.5 V

Yes

Yes

QFN

bq24167RGET

6.5 V

10.5 V

Yes

Yes

QFN

2

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