bq24260

bq24261

bq24262A

SLUSBU4A – DECEMBER 2013 – REVISED JANUARY 2014

www.ti.com

DESCRIPTION (CONTINUED)

The power path management feature allows the bq2426x 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 or

charge termination and timer operation. The system voltage is regulated to the battery voltage but will not drop

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

of many adapters with no hardware change. The charge parameters are programmable using the I2C interface.

To Support USB OTG applications, the bq2426x is configurable to boost the battery voltage to 5V at the input. In

this mode, the bq2426x supplies up to 1A and operates with battery voltages down to 3.3V.

The battery is charged using a standard Li-Ion charge profile with three phases: precharge, constant current and

constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces

the input current to prevent the junction temperature from rising above 125°C. Additionally, a voltage-based,

JEITA compatible battery pack thermistor monitoring input (TS) is included that monitors battery temperature and

automatically changes charge parameters to prevent the battery from charging outside of its safe temperature

range.

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.

Available Options

I2C

PART

D+/D–

TIMERS (SAFETY and

NTC

OTG

OVP

CE BIT DEFAULT

NUMBER

DETECTION

WATCHDOG)

MONITORING

BOOST

ADDRESS

0

bq24260

10.5

YES

YES

JEITA

YES

6B

(Charge Enabled)

1

bq24261

14

NO

YES

JEITA

YES

6B

(Charge Disabled)

0

bq24262A

6.5

NO

NO

JEITA

YES

6B

(Charge Enabled)

Ordering Information

ORDERABLE

PART NUMBER

IC MARKING

PACKAGE

QUANTITY

NUMBER

DSBGA - YFF (PREVIEW)

bq24260YFFR

3000

DSBGA - YFF (PREVIEW)

bq24260YFFT

250

bq24260

bq24260

QFN – RGE (PREVIEW)

bq24260RGER

3000

QFN – RGE (PREVIEW)

bq24260RGET

250

DSBGA - YFF

bq24261YFFR

3000

DSBGA - YFF

bq24261YFFT

250

bq24261

bq24261

QFN – RGE

bq24261RGER

3000

QFN – RGE

bq24261RGET

250

DSBGA - YFF (PREVIEW)

bq24262AYFFR

3000

bq24262A

bq24262A

DSBGA - YFF (PREVIEW)

bq24262AYFFT

250

2

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