LTC3588-1 and LTC3588-2
Piezoelectric Energy Harvesting Power Supplies



Linear Technology's complete energy harvesting solution optimized for high
output impedance energy sources


Linear Technology - LTC3588-1/-2 Piezoelectric Energy Harvesting Power Supplies Linear Technology's LTC3588-1 and LTC3588-2 integrate a low-loss full-wave bridge rectifier with a high efficiency buck converter to form a complete energy harvesting solution optimized for high output impedance energy sources such as piezoelectric transducers. With the LTC3588-1, an ultralow quiescent current undervoltage lockout (UVLO) mode with a wide hysteresis window allows charge to accumulate on an input capacitor until the buck converter can efficiently transfer a portion of the stored charge to the output. In regulation, the LTC3588-1 enters a sleep state in which both input and output quiescent currents are minimal. The buck converter turns on and off as needed to maintain regulation. With the LTC3588-2, an ultralow quiescent current undervoltage lockout (UVLO) mode with a 16V rising threshold enables efficient energy extraction from piezoelectric transducers with high open circuit voltages. This energy is transferred from the input capacitor to the output via a high efficiency synchronous buck regulator. The 16V UVLO threshold also allows for input to output current multiplication through the buck regulator. The buck features a sleep state that minimizes both input and output quiescent currents while in regulation.

   Features - LTC3588-1    Features - LTC3588-2
  • 950nA input quiescent current
    (output in regulation – no load)
  • 450nA input quiescent current in UVLO
  • 2.7V to 20V input operating range
  • Integrated low-loss full-wave bridge rectifier
  • Up to 100mA of output current
  • Selectable output voltages of:
    1.8V, 2.5V, 3.3V, 3.6V
  • 1500nA input quiescent current
    (output in regulation – no load, VIN = 18V)
  • 830nA input quiescent current in UVLO,
    VIN = 12V
  • 14V to 20V input operating range
  • Integrated low-loss full-wave bridge rectifier
  • 16V UVLO improves power utilization from high voltage current limited inputs
  • Up to 100mA of output current

   Applications - LTC3588-1    Applications - LTC3588-2
  • Piezoelectric energy harvesting
  • Electro-mechanical energy harvesting
  • Wireless HVAC sensors
  • Mobile asset tracking
  • Tire pressure sensors
  • Battery replacement for industrial sensors
  • Remote light switches
  • Standalone nanopower buck regulator
  • Piezoelectric energy harvesting
  • Electro-mechanical energy harvesting
  • Low power battery charging
  • Wireless HVAC sensors
  • Mobile asset tracking
  • Tire pressure sensors
  • Battery replacement for industrial sensors

Digi-Key P/N Linear Tech P/N Description  
   LTC3588EDD-1#PBF-ND    LTC3588EDD-1#PBF   Energy Harvesting PSU 10-WFDFN LTC3588-1 Datasheet
   LTC3588EMSE-1#PBF-ND    LTC3588EMSE-1#PBF   Energy Harvesting PSU 10-TFSOP, 10-MSOP
   LTC3588IMSE-1#PBF-ND    LTC3588IMSE-1#PBF   Energy Harvesting PSU 10-TFSOP, 10-MSOP
   LTC3588EMSE-2#PBF-ND    LTC3588EMSE-2#PBF   Energy Harvesting PSU 10-TFSOP, 10-MSOP LTC3588-2 Datasheet
   LTC3588EDD-2#PBF-ND    LTC3588EDD-2#PBF   Energy Harvesting PSU 10-WFDFN