MAX20361 Tiny Single-/Multi-Cell Solar Harvester works from 225mV

MAX20361 Tiny Single-/Multi-Cell Solar Harvester works from 225mV

Maxim Integrated’s solar harvester increases runtime and reduces the size of solar-powered designs

Maxim Integrated’s MAX20361 is a fully-integrated solution for harvesting energy from single-/multi-cell solar sources. It has an ultra-low quiescent current (360 nA) boost converter that can start from input voltages as low as 225 mV (typical). To maximize the power extracted from the source, the MAX20361 implements a proprietary maximum power point tracking (MPPT) technique that allows efficient harvesting from 15 μW to over 300 mW of available input power. The MAX20361 also features an integrated charging and a protection circuit that is optimized for Li-ion batteries but can also be used to charge supercapacitors, thin-film batteries, or traditional capacitors. The charger features a programmable charging cut-off voltage with thresholds programmable through I²C interface as well as temperature shutoff. The MAX20361 is available in a 12-bump, 0.4 mm pitch, 1.63 mm x 1.23 mm wafer-level package (WLP).


  • Efficient harvesting from 15 µW to over 300 mW of available input power
  • Maximum power point tracking (MPPT)
  • Battery/supercapacitor charger


  • Wearable fitness
  • Medical devices
  • Industrial IoT sensors
  • Asset tracking devices
  • Wireless sensor networks

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About mixos

Mike is the founder and editor of, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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