SSP7603 series 500mA LDO Voltage Regulator
There are a few IoT projects floating about and an important part of the circuits utilising ESP8266s or ESP32s are good quality voltage regulators which can deliver a decent current at 3.3V without too much drop out and with a low quiescent current.
I've used HT7333s before and they've been OK, but there appeared on my radar the SSP7603 series of LDO voltage regulators which looked pretty trick with some great overall specs.
They came in a SOT89 package and were pretty cheap! The first thing was to find a suitable adapter and solder them up according to the datasheet. I used 10µF/100nF combo instead of the 1µF tantalum suggested, but otherwise it was as follows.
Just for piece of mind I then tested the little guy under different input voltages and loads - it performed perfectly, even current limiting when appropriate.
It's my new favourite - quite a powerhouse for the size and price!
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