BQ29443中文资料用于 2 节、3 节或 4 节锂离子电池的电压保护 (4.50V)数据手册TI规格书

描述 Description

The bq2944x is a secondary overvoltage protection IC for 2-series, 3-series, or 4-series cell Li-Ion battery packs that incorporates a high-accuracy precision overvoltage detection circuit.
FUNCTION
The voltage of each cell in a battery pack is compared to an internal reference voltage. If any cells reach an overvoltage condition, the bq2944x device starts a timer that provides a delay proportional to the capacitance on the CD pin.Upon expiration of the internal timer, the OUT pin changes from a low state to a high state. An optional latch configuration is available that holds the OUT pin in a high state indefinitely after an overvoltage condition has satisfied the specified delay timer period. The latch is released when the CD pin is shorted to GND.

特性 Features

• 2-Series, 3-Series, or 4-Series Cell SecondaryProtection
• Low Power Consumption ICC [VCELL(ALL) PROTECT]
• Fixed Overvoltage Protection Thresholds: 4.30 V, 4.35 V, 4.40 V, 4.45 V, 4.50 V
• APPLICATIONS
• Power Tools
• Portable Equipment and Instrumentation

应用 Application

• 2-Series, 3-Series, or 4-Series Cell Secondary Protection
• Low Power Consumption ICC < 2 µA Typical [VCELL(ALL)< VPROTECT]
• Fixed Overvoltage Protection Thresholds:
• Small 8L QFN Package

简介

BQ29443属于集成电路（IC）的电池管理。由TI制造生产的BQ29443电池管理电池管理 PMIC（电源管理集成电路）系列产品可用于电池相关的监测和控制功能，包括身份验证、电池平衡、状态监测、电量计量、电源选择、短路保护、过压和欠压保护等等。请注意，虽然该系列中的某些产品可能包括电池充电功能，但将充电功能作为主要功能的产品是单独分类的。