Adjustable Boost Regulator 4-25V

SKU : ABR4-25V

This powerful, adjustable boost regulator can generate an output voltage as high as 25 V from an input voltage as low as 1.5 V, all in a small, 0.42" x 0.88" x 0.23" package. A trimmer potentiometer lets you set the boost regulator’s output voltage to a value between 4 and 25 V.

Overview

The Pololu adjustable boost regulator is a very flexible switching regulator (also called a switched-mode power supply, SMPS, or DC-to-DC converter) that can generate voltages higher than its input voltage. We offer two adjustable ranges: approximately 2.5 V to 9.5 V and 4 V to 25 V. The output voltage can be set using the trimmer potentiometer in the upper-right corner of the board. The input voltage range is 1.5 V to 16 V (the input voltage should be kept below the output voltage). The integrated 2 A switch allows for output currents high enough to drive small motors, as in our 3pi robot, and allows large voltage gains, such as obtaining 24 V from two NiMH or NiCd cells.

Some example applications include:

•    - Powering 5 V or 3.3 V systems from lower-voltage batteries.
•    - Powering 5 V subsystems (e.g. sensors) in lower-voltage (e.g. 3.3 V) systems.
•    - Achieving consistent actuator operation when powered by fluctuating batteries
•    - Powering high-brightness LEDs or a large number of LEDs in series
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Feature summary

•    - input voltage: 1.5 V to 16 V
•    - output adjustable from 2.5 V to 9.5 V or 4 V to 25 V
•    - 750 kHz switching frequency
•    - 2 A switch (and input) limit
•    - integrated over-temperature and over-current shutoff
•    - typical efficiency of 80-90% when doubling voltage and with 100-500 mA output
•    - small size: 10.7 x 22.4 x 5.8 mm (0.42" x 0.88" x 0.23")
•    - weight without header pins: 1.6 g (0.06 oz)