This is a DC-DC Voltage Adjustable Step Down Board, made by OpenELAB. Supports input voltage from 4.5V to 28V, output voltage from 0.8V to 20V. Please note that this product is a step-down board, so the input voltage must be higher than the output voltage.
It's a small size board, the maximum supported current is 3A, using high-quality step-down converter MP1584EN
Parameters
Product Size: 20mm x 16mm
Minimum input voltage: 4.5V
Maximum input voltage: 28V
Minimum output voltage: 0.8V
Maximum output voltage: 20V
Maximum supported current: 3A
Features
The MP1584 is a high frequency step-down switching regulator with an integrated internal high-side high voltage power MOSFET. It provides 3A output with current mode control for fast loop response and easy compensation.
The wide 4.5V to 28V input range accommodates a variety of step-down applications, including those in an automotive input environment.
A 100µA operational quiescent current allows use in battery-powered applications. High power conversion efficiency over a wide load range is achieved by scaling down the switching frequency at light load condition to reduce the switching and gate driving losses.
The frequency foldback helps prevent inductor current runaway during startup and thermal shutdown provides reliable, fault tolerant operation.
By switching at 1.5MHz, the MP1584 is able to prevent EMI (Electromagnetic Interference) noise problems, such as those found in AM radio and ADSL applications. The MP1584 is available in a thermally enhanced SOIC8E package.