BQ25570 - 具有升压充电器的超低功耗收集电源管理 IC 以及毫微功率降压转换器

BQ25570是TI德州仪器公司的一款能源采集和太阳能充电产品，BQ25570是具有升压充电器的超低功耗收集电源管理 IC 以及毫微功率降压转换器，本站介绍了BQ25570的封装应用图解、特点和优点、功能等，并给出了与BQ25570相关的TI元器件型号供参考。

BQ25570 - 具有升压充电器的超低功耗收集电源管理 IC 以及毫微功率降压转换器 - 能源采集和太阳能充电 - 电池管理产品 - 德州仪器

产品特性

Ultra Low Power DC-DC Boost Charger
- Cold-start Voltage: VIN ≥ 330 mV
- Continuous Energy Harvesting From VIN as low as 100 mV
- Input Voltage Regulation Prevents Collapsing High Impedance Input Sources
- Full Operating Quiescent Current of 488 nA (typical)
- Ship Mode with < 5 nA From Battery
Energy Storage
- Energy can be Stored to Re-chargeable Li-ion Batteries, Thin-film Batteries, Super-capacitors, or Conventional Capacitors
Battery Charging and Protection
- Internally Set Undervoltage Level
- User Programmable Overvoltage Levels
Battery Good Output Flag
- Programmable Threshold and Hysteresis
- Warn Attached Microcontrollers of Pending Loss of Power
- Can be Used to Enable or Disable System Loads
Programmable Step Down Regulated Output (Buck)
- High Efficiency up to 93%
- Supports Peak Output Current up to 110 mA (typical)
Programmable Maximum Power Point Tracking (MPPT)
- Provides Optimal Energy Extraction From a Variety of Energy Harvesters including Solar Panels, Thermal and Piezo Electric Generators

产品应用

Energy Harvesting
Solar Chargers
Thermal Electric Generator (TEG) Harvesting
Wireless Sensor Networks (WSN)
Low Power Wireless Monitoring
Environmental Monitoring
Bridge and Structural Health Monitoring (SHM)
Smart Building Controls
Portable and Wearable Health Devices
Entertainment System Remote Controls

产品说明

The bq25570 device is specifically designed to efficiently extract microwatts (µW) to milliwatts (mW) of power generated from a variety of high output impedance DC sources like photovoltaic (solar) or thermal electric generators (TEG) without collapsing those sources. The battery management features ensure that a rechargeable battery is not overcharged by this extracted power, with voltage boosted, or depleted beyond safe limits by a system load. In addition to the highly efficient boosting charger, the bq25570 integrates a highly efficient, nano- power buck converter for providing a second power rail to systems such as wireless sensor networks (WSN) which have stringent power and operational demands. All the capabilities of bq25570 are packed into a small foot-print 20-lead 3.5-mm x 3.5-mm QFN package (RGR).

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
bq25570	VQFN (20)	3.50 mm × 3.50 mm

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