March 12, 2017
ST makes a device called the "LDF", which is a 1 amp low dropout voltage regulator.
Dropout is 500 mV. It has 5 pins. In, Out, Gnd, Enable, and Adjust.
It is available in fixed output and adjustable versions.
PCF8574T is an 8 bit i2c expander.
PCF8575T is a 16 bit i2c expander.
Both are available cheap on Aliexpress
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