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U3V40x Step-Up Voltage Regulators
The U3V40Fx family of boost (step-up) voltage regulators are high-efficiency synchronous switching regulators that generate higher output voltages from input voltages as low as 1.3 V. (Note: minimum start-up voltage is 2.7 V; see the product web pages for details.) The regulators actively limit the instantaneous input currents to 9.5 A while boosting, and the input current can typically be as high as 4.5 A for several seconds before the thermal protection activates. Input currents of around 3.5 A to 4 A can typically be maintained for many minutes without triggering thermal shutdown, though the actual performance depends on the input and output voltages as well as external factors such as ambient temperature and airflow. For boost regulators, the output current equals the input current times the efficiency divided by the boost ratio of VOUT to VIN, so the more you are boosting, the lower the maximum output current will be. 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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These regulators feature a variety of built-in protections, including cycle-by-cycle input current limiting, soft-start, configurable under-voltage lockout, and over-temperature shutdown. The family includes five versions with fixed output voltages ranging from 5 V to 12 V:
- U3V40F5: Fixed 5V output
- U3V40F6: Fixed 6V output
- U3V40F7: Fixed 7.5V output
- U3V40F9: Fixed 9V output
- U3V40F12: Fixed 12V output
Compare all products in this category
Products in category “U3V40x Step-Up Voltage Regulators”
| Pololu item #: 4012 | |
| Brand: Pololu | supply outlook |
| Status: Active and Preferred | |
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| Output voltage | Typical max input current* | Min input voltage |
|---|---|---|
| 5 V | 4 A | 1.3 V (2.7 V startup) |
*Actual achievable maximum continuous 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.
| Pololu item #: 4013 | |
| Brand: Pololu | supply outlook |
| Status: Active and Preferred | |
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| Output voltage | Typical max input current* | Min input voltage |
|---|---|---|
| 6 V | 4 A | 1.3 V (2.7 V startup) |
*Actual achievable maximum continuous 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.
| Pololu item #: 4014 | |
| Brand: Pololu | supply outlook |
| Status: Active and Preferred | |
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| Output voltage | Typical max input current* | Min input voltage |
|---|---|---|
| 7.5 V | 4 A | 1.3 V (2.7 V startup) |
*Actual achievable maximum continuous 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.
| Pololu item #: 4015 | |
| Brand: Pololu | supply outlook |
| Status: Active and Preferred | |
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| Output voltage | Typical max input current* | Min input voltage |
|---|---|---|
| 9 V | 3.5 A | 1.3 V (2.7 V startup) |
*Actual achievable maximum continuous 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.
| Pololu item #: 4016 | |
| Brand: Pololu | supply outlook |
| Status: Active and Preferred | |
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| Output voltage | Typical max input current* | Min input voltage |
|---|---|---|
| 12 V | 3.5 A | 1.3 V (2.7 V startup) |
*Actual achievable maximum continuous 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.
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