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Pololu 12V, 2.2A Step-Down Voltage Regulator D24V22F12
This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 36 V and efficiently reduces it to 12 V. The board measures only 0.7″ × 0.7″ yet delivers typical continuous output currents between 1.4 A and 2.2 A, depending on the input voltage, which makes this regulator well suited for powering moderate loads like sensors or small motors. An optional enable input can be used to put the regulator in a low-power state with a current draw of 5 µA to 10 µA per volt on VIN. The regulator also features reverse voltage protection and a power-good output indicates when the regulator cannot adequately maintain the output voltage.
Alternatives available with variations in these parameter(s): output voltage Select variant…
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| Description | Specs (10) | Pictures (8) | Resources (3) | FAQs (0) | On the blog (2) |
|---|
Dimensions
| Size: | 0.7″ × 0.7″ × 0.31″1 |
|---|---|
| Weight: | 2.3 g1 |
General specifications
| Minimum operating voltage: | 12.7 V2 |
|---|---|
| Maximum operating voltage: | 36 V |
| Continuous output current: | 1.9 A3 |
| Output voltage: | 12 V |
| Reverse voltage protection?: | Y |
| Maximum quiescent current: | 4 mA4 |
Identifying markings
| PCB dev codes: | reg19a |
|---|---|
| Other PCB markings: | 0J9251 |
Notes:
- 1
- Without included optional headers.
- 2
- For small loads; this voltage rises approximately linearly up to around 13.1 V at 2.2 A output.
- 3
- Typical continuous output current at 24 V in. Actual achievable continuous output current is a function of input voltage and is limited by thermal dissipation. See the output current graph under the description tab for more information.
- 4
- Typical worst case; quiescent current is typically around 1 mA for most of the operating range. The ENABLE pin can be used to reduce the quiescent current to less than 10 μA per volt on VIN.
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