Texas Instruments bq25504 Power Management IC for Energy Harvesting

Texas Instruments announced their bq25504 power management integrated circuit for energy harvesting. The boost charger for nano (ultra low) power energy harvesting features circuitry to protect the energy storage element from over voltage and under voltage conditions and to kick-start the system when the battery is deeply discharged. The TI bq25504 IC manages the microwatts to milliwatts of power generated from a number of sources and stores the extracted energy in various storage elements. The Texas Instruments bq25504 boost converter is available now in a 3-mm x 3-mm VQFN package. It is priced at $2.10 in quantities of 1,000.

Texas Instruments bq25504 power management integrated circuit for energy harvesting

TI bq25504 Boost Converter Features

  • Ultra low power with high efficiency DC/DC boost converter/charger
  • Continuous energy harvesting from low input sources: VIN = 80 mV (typical)
  • Ultra low quiescent current: IQ < 330 nA (typical)
  • Cold-start voltage: VIN = 330 mV (typical)
  • Programmable dynamic maximum power point tracking (MPPT)
  • Integrated dynamic maximum power point tracking for optimal
  • Energy extraction from a variety of energy generation sources
  • Input voltage regulation prevents collapsing input source
  • Energy can be stored to re-chargeable Li-ion batteries, thin-film batteries, super-capacitors, or conventional capacitors
  • Battery charging and protection
  • User programmable undervoltage / overvoltage levels
  • On-chip temperature sensor with programmable overtemperature shutoff
  • Battery good output pin
  • Programmable threshold and hysteresis
  • Warn attached microcontrollers of pending loss of power
  • Can be used to enable/disable system loads
TI bq25504 boost charger IC for energy harvesting

More info: Texas Instruments