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BQ25017 - 产品图解：
BQ25017-具有集成同步降压转换器、固定输出 1.8V 的双输入充电器
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TI产品 - BQ25017介绍

BQ25017 - 具有集成同步降压转换器、固定输出 1.8V 的双输入充电器

BQ25017是TI德州仪器公司的一款电池充电器IC产品，BQ25017是具有集成同步降压转换器、固定输出 1.8V 的双输入充电器，本站介绍了BQ25017的封装应用图解、特点和优点、功能等，并给出了与BQ25017相关的TI元器件型号供参考。

BQ25017 - 具有集成同步降压转换器、固定输出 1.8V 的双输入充电器 - 电池充电器IC - 电池管理产品 - 德州仪器

产品描述

The bq25015/7 are highly integrated charge and power management devices targeted at space-limited bluetooth applications. The bq25015/7 devices offer integrated power FET and current sensor for charge control, reverse blocking protection, high accuracy current and voltage regulation, charge status, charge termination, and a highly efficient and low-power dc-dc converter in a small package.

The bq25015/7 devices charge 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 feature for charge termination. The bq25015/7 automatically re-starts the charge if the battery voltage falls below an internal threshold. The bq25015/7 automatically enters sleep mode when VCC supply is removed.

The integrated low-power high-efficiency dc-dc converter is designed to operate directly from a single-cell Li-ion or Li-Pol battery pack. The output voltage is either adjustable from 0.7 V to VBAT, or fixed at 1.8 V (bq25017) and is capable of delivering up to 300-mA of load current. The dc-dc converter operates at a synchronized 1 MHz switching frequency allowing for the use of small inductors.

产品特性

  • Li-Ion Or Li-Pol ChargeManagement and Synchronous DC-DC Power Conversion In a Single Chip
  • Charges and Powers the System from Either the AC Adapter or USB with Autonomous Power Source Selection
  • Integrated USB Charge Control with Selectable 100 mA and 500 mA Charge Rates
  • Integrated Power FET and Current Sensor for Up to 500 mA Charge Applications AND 300 mA DC-DC Controller with Integrated FETs
  • Reverse Leakage Protection Prevents Battery Drainage
  • Automatic Power Save Mode For High Efficiency at Low Current, or Forced PWM for Frequency Sensitive Applications
  • APPLICATIONS
    • MP3 Players
    • PDAs, Smartphones
    • Digital Cameras

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