BQ77910A

更新时间： 2024-01-13 12:07:53

品牌	Logo	应用领域
德州仪器 - TI		电池
页数	文件大小	规格书
52页	940K
描述
Multi-Cell Lithium-Ion/Polymer Precision Protector

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技术参数
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BQ77910A 技术参数

是否无铅：	含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	TSSOP
包装说明：	TSSOP, TSSOP38,.25,20	针数：	38
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.8
可调阈值：	YES	模拟集成电路 - 其他类型：	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：	R-PDSO-G38	JESD-609代码：	e4
长度：	9.7 mm	湿度敏感等级：	2
信道数量：	1	功能数量：	1
端子数量：	38	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	TSSOP	封装等效代码：	TSSOP38,.25,20
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：	260	电源：	5.6/43.75 V
认证状态：	Not Qualified	座面最大高度：	1.2 mm
子类别：	Power Management Circuits	最大供电电流 (Isup)：	0.075 mA
最大供电电压 (Vsup)：	43.75 V	最小供电电压 (Vsup)：	5.6 V
标称供电电压 (Vsup)：	36 V	表面贴装：	YES
温度等级：	INDUSTRIAL	端子面层：	Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式：	GULL WING	端子节距：	0.5 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	4.4 mm	Base Number Matches：	1

BQ77910A 数据手册

bq77910A

www.ti.com

SLUSAV6 –FEBRUARY 2012

Multi-Cell Lithium-Ion/Polymer Precision Protector

Check for Samples: bq77910A

FEATURES

Automatic cell balancing is provided using internal

50-mA cell circuits. A robust balancing algorithm

ensures optimum performance by maintaining all cell

voltages in balance. Balancing may be configured to

operate at all times, only during charge, or can be

disabled completely.

•

4-, 5-, 6-, 7-, 8-, 9-, or 10-Series Cell Protection

Individual Cell-Voltage Monitoring

Low-Side NMOS FET Drive for Charge and

Discharge Control

•

Compatible With 1-mΩ Current-Sense Resistor

Supply-Voltage Range From 5.6 V to 50 V

Integrated 3.3-V Micro-Power LDO Regulator

Low Supply Current

Additional advanced safety features of the bq77910A

include the ability to control split power-path

MOSFETs, an open-cell sense-line detection

mechanism, and the ability to detect an open or

shorted external temperature sensor fault condition.

–

Normal Mode: 50 µA, Typical

Shutdown Mode, LDO OFF: 3 µA, Typical

Programmable Protection Functions

•

38-Pin TSSOP Package

•

Wide range of programmable detection thresholds

and delay times

Internal 50-mA Automatic Cell Balancing

•

Configurable for multiple cell types and application

requirements:

APPLICATIONS

–

Cell overvoltage

Cell undervoltage

Pack discharge overcurrent

Pack discharge short circuit

Pack charge short-circuit current

•

Cordless Power Tools

Cordless Lawn Equipment

Electric Bikes

UPS

Medical Equipment

Light Electric Vehicles (LEV)

•

Variable gain (×1 or ×5) current-sense circuit

–

Compatible with a wide range of current-sense

resistors (1 mΩ to 5 mΩ typical) sized for

application requirements

DESCRIPTION

The bq77910A is a battery protection and cell

balancing device intended for Li-ion and Li-Polymer

battery packs.

Fixed Hardware Protection Functions

•

Preset overtemperature protections

Open-cell detection

Open and shorted thermistor detection

Brownout protection quickly shuts off FETs under

low-battery conditions to minimize the risk of FET

overheating

The bq77910A monitors 4- to 10-series individual cell

voltages and provides fast-acting outputs which may

be used to drive N-channel MOSFETs to interrupt the

power path. Activation delays and recovery methods

for safety conditions are fully programmable in

non-volatile memory.

WARNING

The bq77908/bq77908A-series and bq77910/bq77910A-series integrated circuits

help system designers greatly enhance the safety of their Li-Ion and Li-Polymer

battery packs when integrated effectively and in accordance with the

instructions detailed in this document by technically qualified personnel familiar

with battery pack application safety. This datasheet must be read in full before

working with the bq77910A.

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.

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...52

中文翻译

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