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BQ25050-具有 50mA LDO 的 1A、单输入、单节锂离子电池充电器
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TI产品 - BQ25050介绍

BQ25050 - 具有 50mA LDO 的 1A、单输入、单节锂离子电池充电器

BQ25050是TI德州仪器公司的一款电池充电器IC产品，BQ25050是具有 50mA LDO 的 1A、单输入、单节锂离子电池充电器，本站介绍了BQ25050的封装应用图解、特点和优点、功能等，并给出了与BQ25050相关的TI元器件型号供参考。

BQ25050 - 具有 50mA LDO 的 1A、单输入、单节锂离子电池充电器 - 电池充电器IC - 电池管理产品 - 德州仪器

产品描述

The bq25050 is a highly integrated Li-Ion linear battery charger targeted at space-limited portable applications. It operates from either a USB port or AC Adapter and charges a single-cell Li-Ion battery with up to 1A of charge current. The 30V input voltage range with input over-voltage protections supports low-cost unregulated adapters.

The bq25050 has a single power output that charges the battery. The system load is connected to OUT. The low-battery system startup circuitry maintains OUT greater than 3.4V whenever an input source is connected. This allows the system to start-up and run whenever an input source is connected regardless of the battery voltage. The charge current is programmable up to 1A using the CTRL input. Additionally, a 4.9V 50mA LDO is integrated into the IC for supplying low power external circuitry.

The battery is charged in three phases: conditioning, constant current and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if an internal temperature threshold is exceeded. The charger power stage and charge current sense functions are fully integrated. The charger function has high accuracy current and voltage regulation loops, charge status display, and charge termination.

产品特性

  • 30V input Rating, With 10.5V Over-Voltage Protection (OVP)
  • FET Controller for External Battery FET for External Power Path Control (BGATE)
  • Input Voltage Dynamic Power Management
  • 50mA integrated Low Dropout Linear Regulator (LDO)
  • Programmable Charge Current Through Single Input Interface (CTRL)
  • 0.5% Battery Voltage Regulation Accuracy
  • 7% Charge Current Regulation Accuracy
  • Thermal Regulation and Protection
  • Battery NTC Monitoring During Charge and Discharge
  • Status Indication – Charging/Done and Temperature Faults
  • Available in small 2mm × 3mm 10 Pin SON Package
  • APPLICATIONS
    • Smart Phones
    • Mobile Phones
    • Portable Media Players
    • Low Power Handheld Devices

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