With the addition of an op amp to provide feedback to control the duty cycle of the ATtiny85, the buck-boost overcomes its limitations and keeps a solid set point regardless of load or supply voltage.

[minh7a6] loves the Adafruit Feather, but sees some room for improvement. First is the matter of 5V tolerance. While just about everything is available in a 3.3v range these days, sometimes it&#821… ...

Analog Devices has created a pair of 6A buck-boost converters for automotive use. “MAX25239 and MAX25240 small-footprint 2V to 36V converters are the industry’s only 6A automotive buck-boost with ...