R1271L331B-TR
30V, 1A SYNCHRONOUS PWM STEP-DOW
Pmic Voltage Regulators Dc Dc Switching Regulators
12-WFDFN Exposed Pad
R1271x
Active
$2.88 / unit (market reference)
MOQ: 1 pcs
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Parameters
| Parameter | Value |
|---|---|
| Brand | Nisshinbo Micro Devices Inc. |
| Model | R1271L331B-TR |
| Package / Case | 12-WFDFN Exposed Pad |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 105°C (TA) |
| Topology | Buck |
| Voltage - Input (Min) | 3.6V |
| Voltage - Input (Max) | 30V |
| Voltage - Output | 3.3V |
| Current - Output | 1A |
| Frequency - Switching | 2MHz |
| Number of Outputs | 1 |
| Supplier Device Package | DFN3030-12B |
| RoHS | RoHS |
| Part Status | Active |
Application & Notes
R1271L331B-TR by Nisshinbo Micro Devices Inc. is a Buck IC commonly used in power supply designs, battery-powered devices, and DC-DC conversion modules. Input voltage up to 30V, output 3.3V. The 12-WFDFN Exposed Pad package with surface mount mounting is standard for compact designs. Pay attention to input/output capacitor selection and PCB layout — switching regulators are sensitive to trace inductance.
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All Technical Specifications
| Function | Step-Down |
| Topology | Buck |
| Output Type | Fixed |
| Current - Output | 1A |
| Number of Outputs | 1 |
| Output Configuration | Positive |
| Frequency - Switching | 2MHz |
| Synchronous Rectifier | Yes |
| Voltage - Input (Max) | 30V |
| Voltage - Input (Min) | 3.6V |
| Voltage - Output (Min/Fixed) | 3.3V |
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