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Description
Adjustable switching DC-DC converter
Input voltage: 1.5V to 16V
Selectable output voltage: 2.5V - 9.5V
Integrated over-temperature and over-current shutoff
This powerful Pololu 2.5-9.5V Adjustable Boost Regulator can generate an output voltage as high as 9.5V from an input voltage as low as 1.5V. A trimmer potentiometer lets you set the boost regulator's output voltage to a value between 2.5V and 9.5V.
It 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. Manufacturer also offers another adjustable range of approximately 4V to 25V. The output voltage can be set using the trimmer potentiometer in the upper-right corner of the board. The input voltage range is 1.5V to 16V (the input voltage should be kept below the output voltage). The integrated 2A switch allows for output currents high enough to drive small motors, as in Pololu's 3pi robot, and allows large voltage gains, such as obtaining 24V from two NiMH or NiCd cells. This regulator features a typical efficiency of 80-90% when doubling voltage and with 100-500 mA output.
Application examples:
Powering 5V or 3.3V systems from lower-voltage batteries
Powering 5V 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
Note: For high-volume applications, this product can be customized with fixed output voltages ranging from 2V to 30V.
Dimensions: 10.7mm x 22.4mm x 5.8mm (0.42" x 0.88" x 0.23")
Be sure to tune the output using a < 2V source (e.g. a AA battery) before connecting the actual input source. I bought two, and the first one I tuned with an input of around 5V... an hour later the IC must have shorted internally because it glowed bright and released a lot of the magic smoke :)
J
Jonathan
Faites vraiment attention au réglage!
Veillez à régler la sortie en utilisant une source <2V (par exemple, une pile AA) avant de connecter la source d'entrée réelle. J'en ai acheté deux, et le premier que j'ai réglé avec une entrée d'environ 5V ... une heure plus tard, le circuit intégré a dû être en court-circuit interne car il brillait et libérait beaucoup de fumée magique :)
A
Andre
Works perfectly
Works exactly as stated, instructions and silkscreen make it foolproof. Great for prototyping!
A
Andre
Marche parfaitement
Fonctionne exactement comme indiqué, les instructions et la sérigraphie le rendent infaillible. Idéal pour le prototypage!