BQ25505 - 具有升压充电器的超低功耗收集电源管理 IC 以及自主电源复用器

BQ25505是TI德州仪器公司的一款能源采集和太阳能充电产品，BQ25505是具有升压充电器的超低功耗收集电源管理 IC 以及自主电源复用器，本站介绍了BQ25505的封装应用图解、特点和优点、功能等，并给出了与BQ25505相关的TI元器件型号供参考。

BQ25505 - 具有升压充电器的超低功耗收集电源管理 IC 以及自主电源复用器 - 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 With High-Efficiency DC-DC Boost Charger
- Cold-Start Voltage: VIN ≥ 330 mV
- Continuous Energy Harvesting From Input Sources as Low as 100 mV
- Ultra-Low Quiescent Current of 325 nA
- Input Voltage Regulation Prevents Collapsing High-Impedance Input Sources
- Ship Mode With < 5 nA From Battery
Energy Storage
- Energy can be Stored to Rechargeable Li-Ion Batteries, Thin-Film Batteries, Super-Capacitors, or Conventional Capacitors
Battery Charging and Protection
- Internally Set Undervoltage Level
- User-Programmable Overvoltage Level
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 Maximum Power Point Tracking (MPPT)
- Integrated MPPT for Optimal Energy Extraction From a Variety of Energy Harvesters
Gate Drivers for Primary (Nonrechargeable) and Secondary (Rechargeable) Storage Element Multiplexing
- Autonomous Switching Based on VBAT_OK
- Break-Before-Make Prevents System Rail Droop

产品应用

Energy Harvesting
Solar Chargers
Thermal Electric Generator (TEG) Harvesting
Wireless Sensor Networks (WSN)
Industrial 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 bq25505 device is specifically designed to efficiently extract the microwatts (µW) to miliwatts (mW) of power generated from a variety of DC energy harvesting, high-impedance sources like photovoltaic (solar) or thermal electric generators (TEGs) without collapsing those sources. The battery-management features of the bq25505 ensure that a secondary rechargeable battery is not overcharged by this extracted power, with voltage boosted, nor depleted beyond safe limits by a system load. The integrated multiplexer gate drivers autonomously switch the system load to a primary nonrechargeable battery if the secondary battery voltage falls below the user-defined VBAT_OK threshold.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
bq25505	VQFN (20)	3.50 mm x 3.50 mm

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