BQ29412

更新时间： 2024-09-16 04:09:27

品牌	Logo	应用领域
德州仪器 - TI		电池
页数	文件大小	规格书
13页	205K
描述
VOLTAGE PROTECTION FOR 2-, 3-, OR 4-CELL Li-Ion BATTERIES (2nd-LEVEL PROTECTION)

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BQ29412 数据手册

bq29410, bq29411, bq29412

bq29413, bq29414, bq29415

www.ti.com

SLUS669D–AUGUST 2005–REVISED OCTOBER 2006

VOLTAGE PROTECTION FOR 2-, 3-, OR 4-CELL Li-Ion BATTERIES

(2 -LEVEL PROTECTION)

FEATURES

FUNCTION

•

2-, 3-, or 4-Cell Secondary Protection

Low Power Consumption I_CC< 2 µA

[VCELL_(ALL)< V_(PROTECT)

Each cell in a multiple-cell pack is compared to an

internal reference voltage. If one cell reaches an

overvoltage condition, the protection sequence

begins. The bq2941x device starts charging an

external capacitor through the CD pin. When the CD

pin voltage reaches 1.2 V, the OUT pin changes

from a low level to a high level.

•

]

•

Fixed High Accuracy Overvoltage Protection

Threshold

– bq29410 = 4.35 V

– bq29411 = 4.40 V

DCT PACKAGE

(TOP VIEW)

– bq29412 = 4.45 V

– bq29413 = 4.50 V

OUT

VDD

VC1

VC2

VC3

– bq29414 = 4.55 V

– bq29415 = 4.60 V

•

Programmable Delay Time of Detection

High Power Supply Ripple Rejection

Stable During Pulse Charge Operation

VC4

GND

PW PACKAGE

(TOP VIEW)

APPLICATIONS

•

2^nd-Level Overvoltage Protection in Li-Ion

Battery Packs in:

VC1

OUT

VC2

VC3

GND

VDD

– Notebook Computers

– Portable Instrumentation

– Portable Equipment

VC4

DESCRIPTION

The bq2941x is a secondary overvoltage protection

IC for 2-, 3-, or 4-cell lithium-ion battery packs that

incorporates a high-accuracy precision overvoltage

detection circuit. It includes a programmable delay

circuit for overvoltage detection time.

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.

UNLESS OTHERWISE NOTED this document contains

PRODUCTION DATA information current as of publication date.

Products conform to specifications per the terms of Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...13

中文翻译

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与BQ29412相关器件

型号	品牌	获取价格	描述	数据表
BQ29412DCT3R	TI	获取价格	VOLTAGE PROTECTION FOR 2-, 3-, OR 4-CELL Li-Ion BATTERIES (2nd-LEVEL PROTECTION)
BQ29412DCT3RE6	TI	获取价格	VOLTAGE PROTECTION FOR 2-, 3-, OR 4-CELL Li-Ion BATTERIES (2nd-LEVEL PROTECTION)
BQ29412DCT3T	TI	获取价格	VOLTAGE PROTECTION FOR 2-, 3-, OR 4-CELL Li-Ion BATTERIES (2nd-LEVEL PROTECTION)
BQ29412DCTR	TI	获取价格	VOLTAGE PROTECTION FOR 2-, 3-, OR 4-CELL Li-Ion BATTERIES (2nd-LEVEL PROTECTION)
BQ29412DCTRG4	TI	获取价格	VOLTAGE PROTECTION FOR 2-, 3-, OR 4-CELL Li-Ion BATTERIES (2nd-LEVEL PROTECTION)
BQ29412DCTT	TI	获取价格	VOLTAGE PROTECTION FOR 2-, 3-, OR 4-CELL Li-Ion BATTERIES (2nd-LEVEL PROTECTION)
BQ29412DCTTG4	TI	获取价格	VOLTAGE PROTECTION FOR 2-, 3-, OR 4-CELL Li-Ion BATTERIES (2nd-LEVEL PROTECTION)
BQ29412PW	TI	获取价格	VOLTAGE PROTECTION FOR 2-, 3-, OR 4-CELL Li-Ion BATTERIES (2nd-LEVEL PROTECTION)
BQ29412PWG4	TI	获取价格	VOLTAGE PROTECTION FOR 2-, 3-, OR 4-CELL Li-Ion BATTERIES (2nd-LEVEL PROTECTION)
BQ29412PWR	TI	获取价格	VOLTAGE PROTECTION FOR 2-, 3-, OR 4-CELL Li-Ion BATTERIES (2nd-LEVEL PROTECTION)

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