BQ25570 Series
Ultra Low power Harvester power Management IC with boost charger, and Nanopower Buck Converter
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
Ultra Low power Harvester power Management IC with boost charger, and Nanopower Buck Converter
| Part | Package / Case | Applications | Operating Temperature [Max] | Operating Temperature [Min] | Current - Supply | Mounting Type | Voltage - Supply [Max] | Voltage - Supply [Min] |
|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ25570RGRT | 20-VFQFN Exposed Pad | Energy Harvesting | 125 °C | -40 °C | 488 nA | Surface Mount | 4 V | 0.12 V |
Texas Instruments BQ25570RGRR | 20-VFQFN Exposed Pad | Energy Harvesting | 125 °C | -40 °C | 488 nA | Surface Mount | 4 V | 0.12 V |
Key Features
• Ultra Low Power DC-DC Boost ChargerCold-Start Voltage: VIN≥ 600 mVContinuous Energy Harvesting From VIN as low as 100 mVInput Voltage Regulation Prevents Collapsing High Impedance Input SourcesFull Operating Quiescent Current of 488 nA (typical)Ship Mode with < 5 nA From BatteryEnergy StorageEnergy can be Stored to Re-chargeable Li-ion Batteries, Thin-film Batteries, Super-capacitors, or Conventional CapacitorsBattery Charging and ProtectionInternally Set Undervoltage LevelUser Programmable Overvoltage LevelsBattery Good Output FlagProgrammable Threshold and HysteresisWarn Attached Microcontrollers of Pending Loss of PowerCan be Used to Enable or Disable System LoadsProgrammable 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 GeneratorsUltra Low Power DC-DC Boost ChargerCold-Start Voltage: VIN≥ 600 mVContinuous Energy Harvesting From VIN as low as 100 mVInput Voltage Regulation Prevents Collapsing High Impedance Input SourcesFull Operating Quiescent Current of 488 nA (typical)Ship Mode with < 5 nA From BatteryEnergy StorageEnergy can be Stored to Re-chargeable Li-ion Batteries, Thin-film Batteries, Super-capacitors, or Conventional CapacitorsBattery Charging and ProtectionInternally Set Undervoltage LevelUser Programmable Overvoltage LevelsBattery Good Output FlagProgrammable Threshold and HysteresisWarn Attached Microcontrollers of Pending Loss of PowerCan be Used to Enable or Disable System LoadsProgrammable 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
Description
AI
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).
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).