BQ24401_TI 具有 dT/dt 终端的开关模式镍镉电池/镍氢电池充电器

BQ24401的基本参数

制造厂商：TI
产品类别：电源管理
技术类目：电池管理 IC - 电池充电器 IC
功能描述：具有 dT/dt 终端的开关模式镍镉电池/镍氢电池充电器
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BQ24401的产品详情：

The bq24401 is a programmable, monolithic IC for fast-charge management of nickel cadmium (NiCd) and nickel metal-hydride (NiMH) in single or multi-cell applications.

The bq24401 provides these charge termination criteria:

Rate of temperature rise (ΔT/Δt)
Maximum temperature
Maximum charge time

For safety, the bq24401 inhibits fast charge until the battery voltage and temperature are within user-defined limits. If the battery voltage is below the low-voltage threshold, the bq24401 uses trickle-charge to condition the battery. For NiMH batteries, the bq24401 provides an optional top-off charge to maximize the battery capacity.

The integrated high-speed comparator allows the bq24401 to be the basis for a complete, high-efficiency battery charger circuit for nickel-based chemistries.

BQ24401的优势和特性：

Safe Management of Fast Charge for NiCd and NiMH Battery Packs
High-Frequency Switching Controller for Efficient and Simple Charger Design
Pre-Charge Qualification for Detecting Shorted, Damaged, or Overheated Cells
Fast-Charge Termination by ΔT/Δt, Maximum Temperature, and Maximum Charge Time
Selectable Top-Off Mode for Achieving Maximum Capacity in NiMH Batteries
Programmable Trickle-Charge Mode for Reviving Deeply Discharged Batteries and for Postcharge Maintenance
Built-in Battery Removal and Insertion Detection
Sleep Mode for Low Power Consumption
APPLICATIONS
- Nickel Charger
- High-Power, Multi-Cell Charger

BQ24401的参数（英文）：

Number of series cells
1, 2, 3, 4
Charge current (Max) (A)
2
Operating Vin (Max) (V)
6
Cell chemistry
NiCd, NiMH
Battery charge voltage (Min) (V)
0.95
Battery charge voltage (Max) (V)
6
Absolute Vin (safety rating) (Max) ((V))
7
Control interface
Standalone (RC-Settable)
Features
BAT temp thermistor monitoring (hot/cold profile)
Operating Vin (Min) (V)
4
Rating
Catalog

BQ24401具体的完整产品型号参数及价格（美元）：

BQ24401的完整型号有：BQ24401D、BQ24401DR、BQ24401PW、BQ24401PWR，以下是这些产品的关键参数及官网采购报价：

BQ24401D，工作温度：-20 to 70，封装：SOIC (D)-8，包装数量MPQ：75个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网BQ24401D的批量USD价格：1.8（1000+）

BQ24401DR，工作温度：-20 to 70，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网BQ24401DR的批量USD价格：1.5（1000+）

BQ24401PW，工作温度：-20 to 70，封装：TSSOP (PW)-8，包装数量MPQ：150个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网BQ24401PW的批量USD价格：1.89（1000+）

BQ24401PWR，工作温度：-20 to 70，封装：TSSOP (PW)-8，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网BQ24401PWR的批量USD价格：1.575（1000+）

BQ24401的评估套件：

BQ24401的电路图解：

BQ24401的评估套件：