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LiPo Power Stamp

This is intended to be a small sized, general purpose LiPo charge controller with power path and a 3v3 regulator. Currently the targeted size is 0.7" by 0.7", or just under 18mm square. It is intended to be used with 3.7V nominal cells.

Features

  • TP4056 Charge Controller
    • 500mA charging current
    • Low voltage trickle charging
  • Over/Under-voltage Protection
    • AP9101CK6 + FS8205
    • Disables cell on over/under charge
  • Power Path
    • Provides power via USB when connected
    • 500mA max output (USB or Cell)
  • Switchable 3v3 Regulator
    • Default off
    • 100mA+ output
  • Resettable Polyfuse
    • For high current, direct battery applications (e.g. LEDs)
    • Max 2A continuous output

Stamp v0.3.0

This is the current version of the board.

stamp render front stamp render back

Design Files

Proto Version

The first version is a larger scale test board.

The schematic is also available as PDF.

test board

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A tiny Li-Po/Li-Ion charging management SoM

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