SYS

BAT

bq2589x

Host

Input

3.9V±14V at 3A

USB

OTG

5V at 2.4A

Ichg = 5A

SYS 3.5V±4.5V

I2C Bus

Host Control

VBUS

SW

TS

QON

Optional

REGN

Product

Folder

Sample &

Buy

Technical

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Software

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Community

bq25890, bq25892

SLUSC86A – MARCH 2015 – REVISED JUNE 2015

High Input Voltage and Adjustable Voltage USB On-the-Go Boost Mode

1 Features

•

High Accuracy

–

±0.5% Charge Voltage Regulation

1

•

High Efficiency 5-A, 1.5-MHz Switch Mode Buck

Charge

–

±5% Charge Current Regulation

–

93% Charge Efficiency at 2 A and 91% Charge

–

±7.5% Input Current Regulation

Efficiency at 3 A Charge Current

•

Safety

–

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

–

Battery Temperature Sensing for Charge and

–

Low Power PFM mode for Light Load

Boost Mode

Operations

–

Thermal Regulation and Thermal Shutdown

•

USB On-the-Go (OTG) with Adjustable Output

from 4.5 V to 5.5 V

2 Applications

–

Selectable 500-KHz / 1.5-MHz Boost

•

Smart Phone

Converter with up-to 2.4 A Output

•

Tablet PC

–

93% Boost Efficiency at 5 V at 1 A Output

•

Portable Internet Devices

–

Accurate Hiccup Mode Overcurent Protection

3 Description

•

Single Input to Support USB Input and Adjustable

High Voltage Adapters

The bq25890, bq25892 are highly-integrated 5-A

switch-mode battery charge management and system

–

Support 3.9-V to 14-V Input Voltage Range

power path management device for single cell Li-Ion

–

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

and Li-polymer battery. The devices support high

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

input voltage fast charging. The low impedance

standard and High Voltage Adapters

power

path

optimizes

switch-mode

operation

efficiency, reduces battery charging time and extends

–

Maximum Power Tracking by Input Voltage

Limit up-to 14V for Wide Range of Adapters

interface with charging and system settings makes

–

Auto Detect USB SDP, CDP, DCP, and Non-

the device a truly flexible solution.

standard Adapters (bq25890)

•

Input Current Optimizer (ICO) to Maximize Input

Device Information(1)

Power without Overloading Adapters

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

Resistance Compensation (IRCOMP) from

bq25890

WQFN (24)

4.00mm x 4.00mm

Charger Output to Cell Terminal

bq25892

•

Highest Battery Discharge Efficiency with 11-m

Ω

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

Battery Discharge MOSFET up to 9 A

the end of the datasheet.

•

Integrated ADC for System Monitor

Simplified Schematic

(Voltage, Temperature, Charge Current)

•

Narrow VDC (NVDC) Power Path Management

–

Instant-on Works with No Battery or Deeply

Discharged Battery

–

Ideal Diode Operation in Battery Supplement

Mode

•

BATFET Control to Support Ship Mode, Wake Up,

and Full System Reset

•

System Performance

•

High Integration includes all MOSFETs, Current

Sensing and Loop Compensation

•

12-µA Low Battery Leakage Current to Support

Ship Mode

1

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.