Boost regulator for battery-powered gear
The MAX857ESA+ is a step-up (boost) switching regulator from Analog Devices. It takes an input as low as 0.8 V and delivers an adjustable output up to 6 V, with a 500 mA switch current limit.
The 0.8 V minimum input lets you run this off a nearly dead alkaline cell. The 500 mA switch current is the peak the internal switch can handle.
Standard 8-SOIC package — 0.154" wide, 3.90 mm body width. Pin 1 orientation is marked by a dot on the package top. The tube delivery means the parts slide out one by one; store them in conductive foam or ESD bag after opening.
RoHS3 compliant.