主页 电池管理 IC 电池保护器
主页
电池管理 IC
电池保护器

BQ29401

正在供货

针对 2 节、3 节或 4 节锂离子电池的电压保护（二次保护）

立即订购
数据表

BQ29401

正在供货
数据表 立即订购

产品详情

Rating Catalog Number of series cells (max) 4 Number of series cells (min) 2 Function Protection Operating current (typ) (µA) 2 Vin (max) (V) 25 Overvoltage protection 4.45 Operating temperature range (°C) -20 to 85
Rating Catalog Number of series cells (max) 4 Number of series cells (min) 2 Function Protection Operating current (typ) (µA) 2 Vin (max) (V) 25 Overvoltage protection 4.45 Operating temperature range (°C) -20 to 85
TSSOP (PW) 8 19.2 mm² (3 mm × 6.4 mm)
  • 2-, 3-, or 4-Cell Secondary Protection
  • Low Power Consumption ICC < 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
    • 2nd 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 ICC < 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
    • 2nd 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

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 out 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

订购和质量

支持和培训