Pololu 12V Step-Up Voltage Regulator U3V50F12
These boost (step-up) voltage regulators generate higher output voltages from input voltages as low as 2.9V. They are switching regulators (also called switched-mode power supplies (SMPS) or DC-to-DC converters) and have a typical efficiency between 80% to 95%. The available output current is a function of the input voltage, output voltage, and efficiency (see the Typical Efficiency and Output Current section below), but the input current can typically be as high as 5A. This regulator is available with a fixed 5V, 6V, 9V, 12V, or 24V output:
The U3V50x regulator family also includes two adjustable-output versions: the U3V50ALV offers an output range of 4V to 12V and the U3V50AHV offers an output range of 9V to 30V. The different versions of the board all look very similar, so the bottom silkscreen includes a blank space where you can add your own distinguishing marks or labels.
The no-load quiescent current will typically be between 1mA and 5mA for most combinations of input and output voltages, though the combination of a very high output voltage and a very low input voltage (e.g. when boosting from 3V in to 30V out) can result in quiescent currents on the order of a few dozen milliamps. The ENABLE pin can be used to put the board in a low-power state that reduces the quiescent current to approximately 20µA per volt on VIN.
This regulator has built-in reverse-voltage protection, over-current protection, thermal shutdown (which typically activates at 165°C), and an under-voltage lockout that causes the regulator to turn off when the input voltage is below 2.5V (typical).
Features
- Input voltage: 2.9V to VOUT
- Fixed 5V, 6V, 9V, 12V or 24V output with 4% accuracy
- 5A switch allows for input currents up to 5A
- Integrated reverse-voltage protection, over-current protection, over-temperature shutoff, and under-voltage lockout
- Typical efficiency of 80% to 95%, depending on input voltage, output voltage, and load
- Compact size: 1.9″×0.6″×0.41″ (48×15×10.5mm)
- Two mounting holes for #2 or M2 screws
- Smaller holes for 0.1″ header pins and larger holes for terminal blocks offer several options for connecting to the board
Dimensions
| Size: | 0.6″ × 1.9″ × 0.41″1 |
|---|---|
| Weight: | 7.5 g2 |
General specifications
| Minimum operating voltage: | 2.9 V |
|---|---|
| Maximum operating voltage: | 12 V |
| Maximum input current: | 5 A |
| Output voltage: | 12 V |
| Reverse voltage protection?: | Y |
| Maximum quiescent current: | 8 mA3 |