BQ24308

更新时间： 2024-11-18 06:44:11

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
24页	1011K
描述
Overvoltage and Overcurrent Protection IC and Li+ Charger Front-End Protection IC

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BQ24308 数据手册

bq24308

www.ti.com

SLUS977A –SEPTEMBER 2009–REVISED NOVEMBER 2009

Overvoltage and Overcurrent Protection IC and Li+ Charger Front-End Protection IC

Check for Samples :bq24308

FEATURES

APPLICATIONS

•

Mobile and Smart Phones

PDAs

MP3 Players

Low-Power Handheld Devices

Bluetooth Headsets

•

Provides Protection for Three Variables:

–

Input Overvoltage

Input Overcurrent with Current Limiting

Battery Overvoltage

•

30V Maximum Input Voltage

Supports Up to 1.5A Input Current

Robust Against False Triggering Due to

Current Transients

•

Thermal Shutdown

LDO Mode Voltage Regulation of 5V

Small 2 mm × 2 mm 8-Pin SON Package

DESCRIPTION

The bq24308 is a highly integrated circuit designed to provide protection to Li-ion batteries from failures of the

charging circuit. The IC continuously monitors the input voltage, the input current and the battery voltage. In case

of an input over-voltage condition, the IC immediately removes power from the charging circuit by turning off an

internal switch. In the case of an over-current condition, it limits the current to a safe value for a blanking duration

before turning the switch off. Battery voltage may also be monitored and if the battery voltage exceeds the

specified value the internal switch is turned off. Additionally, the IC also monitors its own die temperature and

switches off if it becomes too hot.

The input over-current threshold can be increased using an external resistor. The IC also offers optional

protection against reverse voltage at the input using an external P-channel FET.

PINOUT

TYPICAL APPLICATION CIRCUIT

8 OUT

ILIM

VSS

bq24308

6 VBAT

PGATE

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PowerPAD is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...24

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BQ24308 替代型号

型号	品牌	替代类型	描述	数据表
BQ24315	TI	功能相似	OVERVOLTAGE AND OVERCURRENT PROTECTION IC AND Li+ CHARGER FRONT-END PROTECTION IC
BQ24314A	TI	功能相似	OVERVOLTAGE AND OVERCURRENT PROTECTION IC AND Li+ CHARGER FRONT-END PROTECTION IC
BQ24314	TI	功能相似	OVERVOLTAGE AND OVERCURRENT PROTECTION IC AND Li+ CHARGER FRONT-END PROTECTION IC

与BQ24308相关器件

型号	品牌	获取价格	描述	数据表
BQ24308DSGR	TI	获取价格	Overvoltage and Overcurrent Protection IC and Li+ Charger Front-End Protection IC
BQ24308DSGT	TI	获取价格	Overvoltage and Overcurrent Protection IC and Li+ Charger Front-End Protection IC
BQ24311	TI	获取价格	过压和过流保护及锂离子电池充电器前端保护 IC
BQ24311DSGR	TI	获取价格	过压和过流保护及锂离子电池充电器前端保护 IC \| DSG \| 8 \| -40 to 85
BQ24311DSGT	TI	获取价格	过压和过流保护及锂离子电池充电器前端保护 IC \| DSG \| 8
BQ24312	TI	获取价格	OVERVOLTAGE AND OVERCURRENT PROTECTION IC AND Li+ CHARGER FRONT-END PROTECTION IC
BQ24312DSG	TI	获取价格	OVERVOLTAGE AND OVERCURRENT PROTECTION IC AND Li+ CHARGER FRONT-END PROTECTION IC
BQ24312DSGR	TI	获取价格	OVERVOLTAGE AND OVERCURRENT PROTECTION IC AND Li+ CHARGER FRONT-END PROTECTION IC
BQ24312DSGT	TI	获取价格	OVERVOLTAGE AND OVERCURRENT PROTECTION IC AND Li+ CHARGER FRONT-END PROTECTION IC
BQ24313	TI	获取价格	OVERVOLTAGE AND OVERCURRENT PROTECTION IC AND Li+ CHARGER FRONT-END PROTECTION IC

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