bq25505 ultra low-power boost charger with battery management and autonomous power multiplexer for primary battery in energy harvester applications
- SLUSBJ3F August 2013 – March 2019
  
  PRODUCTION DATA.

DATA SHEET

bq25505 ultra low-power boost charger with battery management and autonomous power multiplexer for primary battery in energy harvester applications

1 Features

Ultra Low-Power With High-Efficiency DC-DC Boost Charger
- Cold-Start Voltage: V_IN ≥ 600 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