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D36V28Fx Step-Down Voltage Regulators
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The D36V28Fx family of buck (step-down) voltage regulators generates lower output voltages from input voltages as high as 50 V. They are switching regulators (also called switched-mode power supplies (SMPS) or DC-to-DC converters), which makes them much more efficient than linear voltage regulators, especially when the difference between the input and output voltage is large. These regulators can typically support continuous output currents between 2 A and 4 A, depending on the input voltage and output voltage.
The graph below shows maximum output currents that these regulators can deliver continuously at room temperature in still air and without additional heat sinking.
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Step-Down Voltage Regulator D36V28Fx, assembled on breadboard. |
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The regulators have reverse voltage protection up to 40 V, output undervoltage and overvoltage protection, over-current protection, and short-circuit protection. A thermal shutdown feature also helps prevent damage from overheating and a soft-start feature limits the inrush current and gradually ramps the output voltage on startup.
| Regulator | Output voltage | Typical max output current1 | Input voltage range2 | Size | Special features | Price |
|---|---|---|---|---|---|---|
| #3781: D36V28F3 | 3.3 V | 3.6 A | 4.5 V – 50 V | 0.7″ × 0.8″ | Reverse voltage protection3, output undervoltage protection, output overvoltage protection, over-current protection, short-circuit protection, thermal shutdown, soft-start |
$15.95 |
| #3782: D36V28F5 | 5 V | 3.2 A | 5.3 V – 50 V | $15.95 | ||
| #3783: D36V28F6 | 6 V | 2.7 A | 6.3 V – 50 V | $16.95 | ||
| #3784: D36V28F7 | 7.5 V | 2.6 A | 8 V – 50 V | $16.95 | ||
| #3785: D36V28F9 | 9 V | 2.6 A | 9.8 V – 50 V | $16.95 | ||
| #3786: D36V28F12 | 12 V | 2.4 A | 12.9 V – 50 V | $16.95 | ||
| 1Typical continuous output current at 36 V in. Actual achievable continuous output current is a function of input voltage and is limited by thermal dissipation. See the output current graphs on the product pages for more information. | ||||||
| 2Minimum input voltage is subject to dropout voltage considerations; see the dropout voltage section of product pages for more information. | ||||||
| 3Reverse voltage protection up to -40 V. Connecting supplies over 40 V in reverse can damage the device. | ||||||
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Products in category “D36V28Fx Step-Down Voltage Regulators”
| Pololu item #: 3781 | |
| Brand: Pololu | supply outlook |
| Status: Active and Preferred | |
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| Output voltage | Typical max current output1 | Input voltage range2 |
|---|---|---|
| 3.3 V | 3.6 A | 4.5 V – 50 V |
1 Typical continuous output current at 36 V in. Actual achievable continuous output current is a function of input voltage and is limited by thermal dissipation. See the output current graphs on the product pages for more information.
2 Minimum input voltage is subject to dropout voltage considerations; see the dropout voltage section of the product pages for more information.
| Pololu item #: 3782 | |
| Brand: Pololu | supply outlook |
| Status: Active and Preferred | |
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| Output voltage | Typical max current output1 | Input voltage range2 |
|---|---|---|
| 5 V | 3.2 A | 5.3 V – 50 V |
1 Typical continuous output current at 36 V in. Actual achievable continuous output current is a function of input voltage and is limited by thermal dissipation. See the output current graphs on the product pages for more information.
2 Minimum input voltage is subject to dropout voltage considerations; see the dropout voltage section of product pages for more information.
| Pololu item #: 3783 | |
| Brand: Pololu | supply outlook |
| Status: Active and Preferred | |
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| Output voltage | Typical max current output1 | Input voltage range2 |
|---|---|---|
| 6 V | 2.7 A | 6.3 V – 50 V |
1 Typical continuous output current at 36 V in. Actual achievable continuous output current is a function of input voltage and is limited by thermal dissipation. See the output current graphs on the product pages for more information.
2 Minimum input voltage is subject to dropout voltage considerations; see the dropout voltage section of product pages for more information.
| Pololu item #: 3784 | |
| Brand: Pololu | supply outlook |
| Status: Active and Preferred | |
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| Output voltage | Typical max current output1 | Input voltage range2 |
|---|---|---|
| 7.5 V | 2.6 A | 8 V – 50 V |
1 Typical continuous output current at 36 V in. Actual achievable continuous output current is a function of input voltage and is limited by thermal dissipation. See the output current graphs on the product pages for more information.
2 Minimum input voltage is subject to dropout voltage considerations; see the dropout voltage section of product pages for more information.
| Pololu item #: 3785 | |
| Brand: Pololu | supply outlook |
| Status: Active and Preferred | |
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| Output voltage | Typical max current output1 | Input voltage range2 |
|---|---|---|
| 9 V | 2.6 A | 9.8 V – 50 V |
1 Typical continuous output current at 36 V in. Actual achievable continuous output current is a function of input voltage and is limited by thermal dissipation. See the output current graphs on the product pages for more information.
2 Minimum input voltage is subject to dropout voltage considerations; see the dropout voltage section of product pages for more information.
| Pololu item #: 3786 | |
| Brand: Pololu | supply outlook |
| Status: Active and Preferred | |
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| Output voltage | Typical max current output1 | Input voltage range2 |
|---|---|---|
| 12 V | 2.4 A | 12.9 V – 50 V |
1 Typical continuous output current at 36 V in. Actual achievable continuous output current is a function of input voltage and is limited by thermal dissipation. See the output current graphs on the product pages for more information.
2 Minimum input voltage is subject to dropout voltage considerations; see the dropout voltage section of product pages for more information.
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