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Pololu 5V, 5A Step-Down Voltage Regulator D24V50F5
This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 38 V and efficiently reduces it to 5 V. The board measures only 0.7″ × 0.8″, but it allows a typical continuous output current of up to 5 A. Typical efficiencies of 85% to 95% make this regulator well suited for high-power applications like powering motors or servos. High efficiencies are maintained at light loads by dynamically changing the switching frequency, and an optional shutdown pin enables a low-power state with a current draw of a few hundred microamps.
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| Description | Specs (10) | Pictures (10) | Resources (3) | FAQs (0) | On the blog (3) |
|---|
Dimensions
| Size: | 0.7″ × 0.8″ × 0.35″1 |
|---|---|
| Weight: | 3.0 g1 |
General specifications
| Minimum operating voltage: | 6 V2 |
|---|---|
| Maximum operating voltage: | 38 V |
| Continuous output current: | 5 A3 |
| Output voltage: | 5 V |
| Reverse voltage protection?: | Y |
| Maximum quiescent current: | 0.8 mA4 |
Identifying markings
| PCB dev codes: | reg15d |
|---|---|
| Other PCB markings: | 0J8511 |
Notes:
- 1
- Without included optional headers.
- 2
- For small loads; this voltage rises approximately linearly up to around 6.2 V at 5 A output.
- 3
- Typical. Actual continuous output current limited by thermal dissipation.
- 4
- Typical worst case (i.e. with VIN close to 6V). The ENABLE pin can be used to reduce the quiescent current to a few hundred microamps.
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