RP401K181A-TR

Voltage Regulators - DC DC Switching Regulators Overview

The RP401K181A-TR is a synchronous step-up DC/DC converter from the Nisshinbo RP401K series. It provides a fixed 1.8 V output with a maximum current capability of 500 mA. The device operates within an input voltage range of 2.5 V to 5.5 V and utilizes a 1.2 MHz switching frequency. Packaged in a compact 6-pin UFDFN exposed pad format, it supports surface-mount installation. The component functions as a single-output regulator designed for efficient power conversion in portable electronic applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates synchronous rectification for improved efficiency
• Supports PWM/VFM control modes for optimized load performance
• Features a compact footprint suitable for space-constrained designs

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics
• Battery-powered devices
• Mobile communication equipment

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'TR' indicates tape-and-reel packaging when placing orders. Confirm the fixed 1.8 V output voltage matches the target circuit requirements. Ensure the 500 mA output current rating aligns with the application's peak load demands. Check RoHS compliance status if restricted substances are a constraint. Validate the UFDFN package dimensions against the PCB layout specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.8 V rail is required from a 2.5 V to 5.5 V source. The 500 mA limit defines the maximum load capacity. Consider the 1.2 MHz frequency for balancing component size and efficiency. The synchronous design offers better performance than asynchronous alternatives at moderate loads. Verify thermal dissipation capabilities within the small DFN package for the intended duty cycle.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the RP401K series of step-up converters. It shares the family's synchronous architecture and control logic. Other variants in the series offer different fixed output voltages or current ratings. The RP401K series targets low-power portable applications requiring high efficiency.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other RP401K series parts with identical pinouts but different output voltages. Cross-reference with similar 6-pin UFDFN boost converters from other manufacturers if supply constraints exist. Ensure electrical parameters match before substitution.