BQ2054_TI 采用 PDIP 或 SOIC 封装的开关模式锂离子电池充电器

BQ2054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：采用 PDIP 或 SOIC 封装的开关模式锂离子电池充电器
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BQ2054的产品详情：

The bq2054 Lithium Ion Fast-Charge IC is designed to optimize charging of lithium ion (Li-Ion) chemistry batteries. A flexible pulse-width modulation regulator allows the bq2054 to control voltage and current during charging. The regulator frequency is set by an external capacitor for design flexibility. The switch-mode design keeps power dissipation to a minimum.

The bq2054 measures battery temperature using an external thermistor for charge qualification. Charging begins when power is applied or on battery insertion.

For safety, the bq2054 inhibits charging until the battery voltage and temperature are within configured limits. If the battery voltage is less than the low-voltage threshold, the bq2054 provides low-current conditioning of the battery.

A constant current-charging phase replenishes up to 70% of the charge capacity, and a voltage-regulated phase returns the battery to full. The charge cycle terminates when the charging current falls below a user-selectable current limit. For safety, charging terminates after maximum time and is suspended if the temperature is out-side the preconfigured limits.

The bq2054 provides status indications of all charger states and faults for accurate determination of the battery and charge system conditions.

BQ2054的优势和特性：

Safe charge of Lithium Ion battery packs
Voltage-regulated current-limited charging
Fast charge terminated by selectable minimum current; safety backup termination on maximum time
Charging continuously qualified by temperature and voltage limits
Pulse-width modulation control ideal for high-efficiency switch-mode power conversion
Direct LED control outputs display charge status and fault conditions

BQ2054的参数（英文）：

Number of series cells
1
Charge current (Max) (A)
2
Operating Vin (Max) (V)
5.5
Cell chemistry
Li-Ion/Li-Polymer
Battery charge voltage (Min) (V)
4.2
Battery charge voltage (Max) (V)
4.2
Absolute Vin (safety rating) (Max) ((V))
7
Control interface
Standalone (RC-Settable)
Features
BAT temp thermistor monitoring (hot/cold profile)
Operating Vin (Min) (V)
4.5
Rating
Catalog

BQ2054具体的完整产品型号参数及价格（美元）：

BQ2054的完整型号有：BQ2054PN、BQ2054SN、BQ2054SNTR，以下是这些产品的关键参数及官网采购报价：

BQ2054PN，工作温度：-20 to 70，封装：PDIP (N)-16，包装数量MPQ：25个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：NIPDAU，TI官网BQ2054PN的批量USD价格：7.255（1000+）

BQ2054SN，工作温度：-20 to 70，封装：SOIC (D)-16，包装数量MPQ：40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BQ2054SN的批量USD价格：7.36（1000+）

BQ2054SNTR，工作温度：-20 to 70，封装：SOIC (D)-16，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BQ2054SNTR的批量USD价格：6.308（1000+）

BQ2054的评估套件：

BQ2054的电路图解：

BQ2054的评估套件：