AEM30940 – Energy Harvesting Power Management IC


E-peas’ thermal energy harvesting IC solution – AEM30940 – is an integrated energy management subsystem that extracts DC power from TEG to simultaneously store energy in a rechargeable element and supply the system with two independent regulated voltages. This allows product designers and engineers to extend battery lifetime and ultimately get rid of the primary energy storage element in a large range of wireless applications like industrial monitoring, home automation, wearables.


Ultra-low-power start-up

  • Cold start from 380 mV input voltage and 3 µW input power (typical)

Ultra-low-power Boost regulator

  • Configurable MPPT with single-pin programming
    Selectable MPP ratios of 50, 65, 80, 100%
  • Open circuit voltage sensing for MPPT every 0.5 s
  • Input voltage operation range from 50 mV to 5.5V

Integrated LDO regulator at low voltage

  • 1.8 V, high efficiency
  • Up to 10 mA load current
    Power gated by external control

Integrated LDO regulator at high voltage

  • Configurable from 2.2 V to 4.2 V
  • Up to 80 mA load current with 300 mV drop-out
  • Power gated by external control

Flexible energy storage management

  • Programmable overcharge and overdischarge protection
  • For any type of rechargeable battery or (super)capacitor
  • Fast supercapacitor charging
  • Warns load when battery is getting empty
  • Warns when regulators are switched on

Smallest footprint, smallest BOM

  • Only seven passive external components

Optional primary battery

  • Automatically switches to the primary battery when
  • secondary battery gets empty

Contact us to request an evaluation board


Description Version Updated Download
AEM30940 product brief PB_AEM30940_Rev1.1 13/12/2017 Download
ALTIUM and EAGLE files about the AEM30940 / Simplified schematic and BOM AEM30940_XXC_V1.2 02/08/2019 Download