Datasheet > BQ25896

BQ25896

更新时间： 2025-10-07 01:08:55

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
11页	767K
描述
bq25896 I2C Controlled Single Cell 3-A Fast Charger with MaxChargeTM Technology for High Input Voltage and Adjustable Voltage USB On-the-Go Boost Mode

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bq25896

SLUSC76A –JULY 2015–REVISED SEPTEMBER 2015

bq25896 I²C Controlled Single Cell 3-A Fast Charger with MaxCharge Technology for

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

1 Features

Ship Mode

•

High Accuracy

•

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

Charge

–

±0.5% Charge Voltage Regulation

±5% Charge Current Regulation

±7.5% Input Current Regulation

–

92.5% Charge Efficiency at 2 A and 90.5%

Charge Efficiency at 3 A Charge Current

–

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

Safety

Low Power PFM mode for Light Load

Operations

–

Battery Temperature Sensing for Charge and

Boost Mode

•

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

from 4.5 V to 5.5 V

–

Thermal Regulation and Thermal Shutdown

–

Selectable 500-KHz / 1.5-MHz Boost

Converter with up-to 2 A Output

2 Applications

•

Smart Phone

–

93% Boost Efficiency at 5 V at 1 A Output

Accurate Hiccup Mode Overcurent Protection

Support down-to 2.5V Battery

Tablet PC

Portable Internet Devices

3 Description

Support PWM only or PFM/PWM control for

Light Load Efficiency

The bq25896 is a highly-integrated 3-A switch-mode

battery charge management and system power path

management device for single cell Li-Ion and Li-

polymer battery. The devices support high input

voltage fast 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.

•

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

–

Maximum Power Tracking by Input Voltage

Limit up-to 14V for Wide Range of Adapters

Device Information⁽¹⁾

•

Input Current Optimizer (ICO) to Maximize Input

Power without Overloading Adapters

PART NUMBER

PACKAGE

BODY SIZE (NOM)

Resistance Compensation (IRCOMP) from

Charger Output to Cell Terminal

bq25896

WQFN (24)

4.00mm x 4.00mm

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

the end of the datasheet.

Highest Battery Discharge Efficiency with 11-mΩ

Battery Discharge MOSFET up to 9 A

Simplified Schematic

Integrated ADC for System Monitor

(Voltage, Temperature, Charge Current)

Input

SYS 3.5Vœ4.5V

3.9Vœ14V at 3A

Narrow VDC (NVDC) Power Path Management

VBUS

USB

Host

OTG

–

Instant-on Works with No Battery or Deeply

Discharged Battery

5V at 2A

SYS

Ichg = 3A

–

Ideal Diode Operation in Battery Supplement

Mode

BAT

I2C Bus

QON

•

BATFET Control to Support Ship Mode, Wake Up,

and Full System Reset

Flexible Autonomous and I²C Mode for Optimal

System Performance

REGN

bq25896

Optional

Host Control

High Integration includes all MOSFETs, Current

Sensing and Loop Compensation

•

12-µA Low Battery Leakage Current to Support

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.

12 3 4 5 6 7...11

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与BQ25896相关器件

型号	品牌	获取价格	描述	数据表
BQ25896RTWR	TI	获取价格	bq25896 I2C Controlled Single Cell 3-A Fast Charger with MaxChargeTM Technology for High I
BQ25896RTWT	TI	获取价格	bq25896 I2C Controlled Single Cell 3-A Fast Charger with MaxChargeTM Technology for High I
BQ25896_15	TI	获取价格	bq25896 I2C Controlled Single Cell 3-A Fast Charger with MaxChargeTM Technology for High I
BQ25898	TI	获取价格	具有电源路径、采用 MaxchargeTM 技术且适用于高输入的 I2C 单节 4A 降压
BQ25898C	TI	获取价格	用于并联充电应用的 I2C 单节 3A 降压电池充电器
BQ25898CYFFR	TI	获取价格	用于并联充电应用的 I2C 单节 3A 降压电池充电器 \| YFF \| 42 \| -40
BQ25898CYFFT	TI	获取价格	用于并联充电应用的 I2C 单节 3A 降压电池充电器 \| YFF \| 42 \| -40
BQ25898D	TI	获取价格	具有电源路径和 HVDCP 的 I2C 单节 4A 降压电池充电器
BQ25898DYFFR	TI	获取价格	具有电源路径和 HVDCP 的 I2C 单节 4A 降压电池充电器 \| YFF \| 42
BQ25898DYFFT	TI	获取价格	具有电源路径和 HVDCP 的 I2C 单节 4A 降压电池充电器 \| YFF \| 42

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