You can supply a range input voltages to Wide Input SHIM, either through the centre positive 3.5mm outer diameter barrel jack connector, or through the two broken-out + and - pins on the SHIM.
The board will provide 5V/2A output (through the GPIO to the Pi) at input voltages of 5V to 16V. Current drops to 1.5A at 4V, and 1A at 3V.
Pulling the EN (enable) pin to ground will cut the 5V voltage output, although it should be noted that you should shut your Pi down cleanly before doing this!
- This item is an accessory for the Wide Input SHIM (available separately)
- Using both micro-USB power and Wide Input SHIM power at the same time is not recommended with Pi Zero / W where there is no protection against back-powering