Review on π‘ Packed Power: PEMENOL 5PCS AMS1117-3.3V Buck Converter β Efficient 3.3V Step-Down Voltage Regulator for Stable Power Supply (800mA) by Dwayne Shavers
Non-buck converter
Connected to a 12V supply to get a 3.3V output The output is 3.3V as it should be. Then measured the output current at 80mA and the input current at 93mA, efficiency 21.5%. I expected the buck converter efficiency to be much higher. Look at the AMS1117 part, which clearly says it's based on a linear regulator. So anything said here that it's much more efficient than a linear regulator is just a lie.
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