BQ25012 - 单片锂离子充电器和 DC/DC 转换器 IC，输出 1.8V

BQ25012是TI德州仪器公司的一款电池充电器IC产品，BQ25012是单片锂离子充电器和 DC/DC 转换器 IC，输出 1.8V，本站介绍了BQ25012的封装应用图解、特点和优点、功能等，并给出了与BQ25012相关的TI元器件型号供参考。

BQ25012 - 单片锂离子充电器和 DC/DC 转换器 IC，输出 1.8V - 电池充电器IC - 电池管理产品 - 德州仪器

产品描述

The bq2501x series are highly integrated charge andpower management devices targeted at space-limited bluetooth applications. The bq2501x series 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 bq2501x 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 feature for charge termination. The bq2501x automatically re-starts the charge if the battery voltage falls below an internal threshold. The bq2501x 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 (bq25010), fixed at 3.3 V (bq25011), or fixed at 1.8 V (bq25012), and is capable of delivering up to 150-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
Optimized for Powering Bluetooth™ Headsets and Accessories
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 100 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
3.5 mm × 4.5 mm QFN Package
APPLICATIONS
- Bluetooth™ Headsets
- Bluetooth™ Accessories
- Low-Power Handheld Devices

Bluetooth is a trademark of Bluetooth SIG, Inc.

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