VBUS

SW

BTST

SYS

BAT

bq25898C

Host

INPUT

3.9V±14V

USB

ICHG

BATSEN

I2C BUS

Host Control

Copyright © 2016, Texas Instruments Incorporated

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

bq25898C

SLUSCJ7B – MARCH 2016 – REVISED APRIL 2016

DSBGA Package

1

1 Features

1

•

Operation as Slave Charger to Provide Fast

Charging in Dual Charger Operation

•

Simple Configuration with Minimum BOM

•

High Efficiency 3-A, 1.5-MHz Switch Mode Buck

Charge

–

92% Charge Efficiency at 3 A and 94% Charge

Efficiency at 2 A Charge Current

–

Optimize for High Voltage Input (9 V / 12 V)

–

Low Power PFM mode for Light Load

Operations

•

Single Input to Support USB Input and Adjustable

High Voltage Adapters

–

Support 3.9-V to 14-V Input Voltage Range

–

Input Current Limit (100 mA to 3.25 A with 50-

mA resolution) to Support USB2.0, USB3.0

standard and High Voltage Adapters

–

Wide Input Dynamic Power Management

(DPM) Range

•

Highest Battery Discharge Efficiency with 5-m

Ω

•

Default Charge Disabled

•

Integrated ADC for System Monitor

(Voltage, Charge Current)

•

System Performance

•

Remote Battery Sensing

•

High Integration includes all MOSFETs, Current

Sensing and Loop Compensation

•

High Accuracy

–

±0.5% Charge Voltage Regulation

–

±5% Charge Current Regulation

–

±7.5% Input Current Regulation

•

Safety

–

Thermal Regulation and Thermal Shutdown

–

Input UVLO/Overvoltage Protection

–

Battery OVP

–

Safety Timer

2 Applications

•

Smart Phone

•

Tablet PC

•

Portable Internet Devices

3 Description

The bq25898C is a highly-integrated switch-mode

battery charge management and system power path

management device for single cell Li-Ion and Li-

polymer battery. The device supports high input

voltage for charging. The low impedance power path

optimizes switch-mode operation efficiency, reduces

battery charging time and extends battery life during

discharging phase. The I2C serial interface with

charging and system settings makes the device a

truly flexible solution. The bq25898C is available in a

2.8mm x 2.5mm 42-ball DSBGA package.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

bq25898C

DSBGA (42)

2.80 mm x 2.50 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Simplified Schematic