How to give the right power supply (volts + current) for SIM800L (gsm) ?

Why resurrect a year old thread with wrong information?

The OP talked about needing 2A and you specify components with a maximum rating of 1A, both the regulator and the diode.

Hi all, Has somebody found a solution for this? Would be great to share the knowledge! I‘m still struggling to bring the SIM module to work properly from a 5V/2.5A Source.

Tried the LM2596 and LM317t already, but doesn‘t seem to work for me. I‘m not that much into electronics to understand the ti-datasheet mentioned before completely and build the whole cap-thing from scratch.

Your help is very appreciated!!