2.5-7.5V Adjustable Step-down Voltage Regulator D36V6ALV
The D36V6x family of buck (step-down) voltage regulators generates lower output voltages from input voltages as high as 50 V. They are switching regulators (also called switched-mode power supplies (SMPS) or DC-to-DC converters), which makes them much more efficient than linear voltage regulators, especially when the difference between the input and output voltage is large.
Input voltage: 4 V to 50 V (input must exceed the output by the dropout voltage; see the dropout voltage section for details)
Output voltage: adjustable from 2.5 V to 7.5 V by on-board trimmer potentiometer
Maximum output current: 600 mA (see the maximum continuous output current graph below)
Fixed 2.1 MHz switching frequency
High-voltage enable input can put the board into a low-power state where it draws less than 2 μA (typical)
Low quiescent current: < 2 mA (see the quiescent current graph below)
Integrated over-temperature and over-current shutoff
Small size: 0.6″ × 0.4″ × 0.15″ (15 mm × 10 mm × 4 mm)
Weight: 0.6 g
This regulator has four connections: shutdown (SHDN), input voltage (VIN), ground (GND), and output voltage (VOUT).
The SHDN pin can be driven low (under 1.25 V) to turn off the output and put the board into a low-power state (< 2 μA typical). The regulator is enabled by default, and this input can be left disconnected if you do not need this feature.
The input voltage, VIN, powers the regulator and should be between 4 V and 50 V. If the input voltage gets too close to the output voltage, the output will start to drop, so you should ensure that VIN exceeds VOUT by at least the dropout voltage, which varies with the output voltage and the load.
The output voltage, VOUT, is determined by the trimmer potentiometer position, with clockwise turns increasing the output voltage. You can use a multimeter to measure the output as you set it. Please note that the output voltage can be affected by a screwdriver touching the potentiometer, so the output measurement should be done with nothing touching the potentiometer. When setting the output voltage, note that the buck regulator can only produce voltages lower than the input voltage.
For more information: Pololu
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