RP401K331B-TR

Voltage Regulators - DC DC Switching Regulators Overview

The RP401K331B-TR is a boost switching regulator IC manufactured by Nisshinbo Micro Devices. It provides a fixed positive output voltage of 3.3V with a maximum output current of 500mA. The device operates within an input voltage range of 0.6V to 5.5V and features a single output channel. It utilizes a PWM/VFM control method for efficient power conversion. The component is housed in a compact DFN-PLP-1820-6 package, designed for surface-mount applications in portable electronic devices requiring step-up DC-DC conversion.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Boost topology for stepping up low input voltages to a stable 3.3V output
• Integrated synchronous rectification for improved efficiency
• Wide input voltage range supporting operation from very low sources
• Compact exposed pad DFN package for space-constrained designs

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered devices requiring voltage step-up
• Single-cell lithium-ion battery powered systems
• Low-voltage sensor interfaces needing regulated supply
• Mobile communication modules with varying input levels

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix B against the official datasheet to confirm pinout and thermal pad configuration. Ensure the ordering quantity aligns with the manufacturer's reel specifications. Cross-reference the RoHS compliance status with current environmental regulations. Confirm the operating temperature range meets the target application requirements before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V output is required from inputs as low as 0.6V. The 500mA current capability suits moderate load applications. Consider the DFN-PLP-1820-6 package size for PCB layout constraints. Evaluate the PWM/VFM mode transition for efficiency needs under light loads compared to continuous conduction alternatives.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the RP401K series of boost converters from Nisshinbo Micro Devices. The series focuses on high-efficiency step-up regulation for portable electronics. The RP401K331B-TR specifically targets applications needing reliable 3.3V generation from sub-3.3V sources like single-cell batteries or energy harvesting circuits.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for RP402K331A-TR if higher current capacity (1.5A) is needed, though it uses a different package. Verify electrical compatibility with existing boost converter designs before substitution.