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BQ24025 - 产品图解:
BQ24025-采用 3x3 QFN-10 封装的 bqTINY-II 1 节锂离子充电器 (2Ah),具有 USB/AC 电源管理、7h 定时器、使能端和温度传感器
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TI产品 - BQ24025介绍
BQ24025 - 采用 3x3 QFN-10 封装的 bqTINY-II 1 节锂离子充电器 (2Ah),具有 USB/AC 电源管理、7h 定时器、使能端和温度传感器

BQ24025是TI公司的一款电池充电器IC产品,BQ24025是采用 3x3 QFN-10 封装的 bqTINY-II 1 节锂离子充电器 (2Ah),具有 USB/AC 电源管理、7h 定时器、使能端和温度传感器,本页介绍了BQ24025的产品说明、应用、特性等,并给出了与BQ24025相关的TI元器件型号供参考。

BQ24025 - 采用 3x3 QFN-10 封装的 bqTINY-II 1 节锂离子充电器 (2Ah),具有 USB/AC 电源管理、7h 定时器、使能端和温度传感器 - 电池充电器IC - 电池管理产品 - TI公司(Texas Instruments,德州仪器)

产品描述

The bqTINY-II series are highly-integrated, flexible Li-Ion linear charge and system power management devices for space-limited charger applications. In a single monolithic device, the bqTINY-II offers integrated USB-port and ac-adapter supply management with autonomous power-source selection, power-FET and current-sensor interfaces, high-accuracy current and voltage regulation, charge status, and charge termination.

The bqTINY-II automatically selects the USB-port or the ac-adapter as the power source for the system. In the USB configuration, the host can select from two preset charge rates of 100 mA or 500 mA. In the ac-adapter configuration, an external resistor sets the system or charge current.

The bqTINY-II charges the battery in three phases: conditioning, constant current, and constant voltage. Charge is terminated based on minimum current. An internal charge timer provides a backup safety for charge termination. The bqTINY-II automatically restarts the charge if the battery voltage falls below an internal threshold. The bqTINY-II automatically enters sleep mode when both supplies are removed.

Different versions of the bqTINY-II offer many additional features. These include a temperature-sensor input for detecting hot or cold battery packs, a power-good output (PG) indicating the presence of input power, a TTL-level charge-enable input (CE) used to disable or enable the charge process, and a TTL-level timer and taper-detect enable input (TTE) used to disable or enable the fast-charge timer and charge termination.

产品特性

  • Small 3 mm × 3 mm MLP Package
  • Charges and powers Systems from Either AC Adapter or USB With Autonomous power-Source Selection
  • Integrated USB Control With Selectable 100 mA and 500 mA Charge Rates
  • Ideal for Low-Dropout Charger Designs for Single-Cell Li-Ion or Li-pol Packs in Space Limited portable applications
  • Integrated power FET and Current Sensor for Up to 1-A Charge applications From AC Adapter
  • Precharge Conditioning With Safety Timer
  • power Good (AC Adapter Present) Status Output
  • Optional Battery Temperature Monitoring Before and During Charge
  • Automatic Sleep Mode for Low-power Consumption
  • APPLICATIONS
    • PDAs, MP3 Players
    • Digital Cameras
    • Internet appliances
    • Smartphones

bqTINY is a trademark of Texas Instruments.

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