BQ24450 - 用于铅酸电池的集成充电控制器

BQ24450是TI德州仪器公司的一款电池充电器IC产品，BQ24450是用于铅酸电池的集成充电控制器，本站介绍了BQ24450的封装应用图解、特点和优点、功能等，并给出了与BQ24450相关的TI元器件型号供参考。

BQ24450 - 用于铅酸电池的集成充电控制器 - 电池充电器IC - 电池管理产品 - 德州仪器

产品描述

The bq24450 contains all the necessary circuitry to optimally control the charging of valve-regulated lead-acid batteries. The IC controls the charging current as well as the charging voltage to safely and efficiently charge the battery, maximizing battery capacity and life. Depending on the application, the IC can be configured as a simple constant-voltage float charge controller or a dual-voltage float-cum-boost charge controller.

The built-in precision voltage reference is especially temperature-compensated to track the characteristics of lead-acid cells, and maintains optimum charging voltage over an extended temperature range without using any external components. The ICs low current consumption allows for accurate temperature monitoring by minimizing self-heating effects.

The IC can support a wide range of battery capacities and charging currents, limited only by the selection of the external pass transistor. The versatile driver for the external pass transistor supports both NPN and PNP types and provides at least 25mA of base drive.

In addition to the voltage- and current-regulating amplifiers, the IC features comparators that monitor the charging voltage and current. These comparators feed into an internal state machine that sequences the charge cycle. Some of these comparator outputs are made available as status signals at external pins of the IC. These status and control pins can be connected to a processor, or they can be connected up in flexible ways for standalone applications.

产品特性

Regulates Both Voltage and Current During Charging
Precision Temperature-Compensated Reference:
- Maximizes Battery Capacity Over Temperature
- Ensures Safety While Charging Over Temperature
Optimum Control to Maximize Battery Capacity and Life
Supports Different Configurations
Minimum External Components
Available in 16-Pin SOIC (DW)
APPLICATIONS
- Emergency Lighting Systems
- Security and Alarm Systems
- Telecommunication Backup Power
- Uninterruptible Power Supplies

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