BQ29400

正在供货

针对 2 节、3 节或 4 节锂离子和锂聚合物电池的 2 级过压保护（第 2 级保护）

立即订购

数据表

document-pdfAcrobat Voltage Protection for 2-,3-or,4-Cell Lion Batteries 数据表 (Rev. C) (英语)

BQ29400

正在供货

数据表

立即订购

产品详情

Rating

Catalog

Number of series cells (max)

3, 4

Number of series cells (min)

2, 3, 4

Features

Overvoltage, Single pin output drive

Function

Protection

Operating current (typ) (µA)

2

Vin (max) (V)

25.3

Overvoltage protection

4.35

Operating temperature range (°C)

-25 to 85

Battery overvoltage protection (min) (V)

4.325

Battery overvoltage protection (max) (V)

4.375

Rating

Catalog

Number of series cells (max)

3, 4

Number of series cells (min)

2, 3, 4

Features

Overvoltage, Single pin output drive

Function

Protection

Operating current (typ) (µA)

2

Vin (max) (V)

25.3

Overvoltage protection

4.35

Operating temperature range (°C)

-25 to 85

Battery overvoltage protection (min) (V)

4.325

Battery overvoltage protection (max) (V)

4.375

TSSOP (PW)

8

19.2 mm² (3 mm × 6.4 mm)

SSOP (DCT)

8

11.8 mm² (2.95 mm × 4 mm)

2-, 3-, or 4-Cell Secondary Protection
Low Power Consumption I_CC < 2 µA [VCELL_(ALL) <V_(PROTECT)]
High Accuracy Over Sense Voltage:
- bq29400: 4.35 V ±25 mV
- bq29400A: 4.40 V ±25 mV
- bq29401: 4.45 V ±25 mV
- bq29405: 4.65 V ±25 mV
Prefixed Protection Threshold Voltage
Programmable Delay Time
High Power Supply Ripple Rejection
Stable During Pulse Charge Operation
APPLICATIONS
- 2^nd Level Protection in Lion Battery Packs in
  - Notebook PCs
  - Portable Instrumentation
  - Medical and Test Equipment

2-, 3-, or 4-Cell Secondary Protection
Low Power Consumption I_CC < 2 µA [VCELL_(ALL) <V_(PROTECT)]
High Accuracy Over Sense Voltage:
- bq29400: 4.35 V ±25 mV
- bq29400A: 4.40 V ±25 mV
- bq29401: 4.45 V ±25 mV
- bq29405: 4.65 V ±25 mV
Prefixed Protection Threshold Voltage
Programmable Delay Time
High Power Supply Ripple Rejection
Stable During Pulse Charge Operation
APPLICATIONS
- 2^nd Level Protection in Lion Battery Packs in
  - Notebook PCs
  - Portable Instrumentation
  - Medical and Test Equipment

The bq29400, bq29400A, bq29401, and bq29405 are BiCMOS secondary protection ICs for 2-, 3-, or 4-cell Lithium-Ion battery packs that incorporate a high-accuracy precision over voltage detection circuit. They include a programmable delay circuit for over voltage detection time.

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 bq2940x 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.

The bq29400, bq29400A, bq29401, and bq29405 are BiCMOS secondary protection ICs for 2-, 3-, or 4-cell Lithium-Ion battery packs that incorporate a high-accuracy precision over voltage detection circuit. They include a programmable delay circuit for over voltage detection time.

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 bq2940x 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.

filter

查找其他电池保护器

下载观看带字幕的视频视频

您可能感兴趣的相似产品

open-in-new

比较替代产品

功能与比较器件相同但引脚有所不同。

BQ2947

正在供货

锂离子保护，可实现精确的逐节电池电压监视 This product is a 3-s - 5-s monitor with integrated ADC.

技术文档

未找到结果。请清除搜索并重试。

查看全部 1

顶层文档	类型	标题	格式选项	下载最新的英语版本		日期
*	数据表	Voltage Protection for 2-,3-or,4-Cell Lion Batteries 数据表 (Rev. C)				2005-9-26

设计与开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

封装	引脚	CAD 符号、封装和 3D 模型
TSSOP (PW)	8	Ultra Librarian
SSOP (DCT)	8	Ultra Librarian

适用于评估类项目的 TI 标准条款与条件。

BQ29400

针对 2 节、3 节或 4 节锂离子和锂聚合物电池的 2 级过压保护（第 2 级保护）

BQ29400

产品详情

您可能感兴趣的相似产品

功能与比较器件相同但引脚有所不同。

技术文档

设计与开发

订购和质量

支持和培训

可获得 TI 工程师技术支持的 TI E2E™ 论坛

视频系列

视频