RP123K281D-TR

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The RP123K281D-TR is a fixed-output low-dropout (LDO) voltage regulator manufactured by Nisshinbo Micro Devices. It provides a stable 2.8 V output with a maximum continuous current of 250 mA. The device operates within an input voltage range that supports a typical dropout voltage of 105 mV and a maximum of 165 mV. Key electrical specifications include a quiescent current of 9.5 uA, a line regulation of 0.02 %/V, and a load regulation of 8 mV. It features a typical power supply rejection ratio (PSRR) of 90 dB and maintains an output voltage accuracy of 0.8 %. The component is housed in a DFN(PLP)1010-4 package and functions reliably across a temperature range of -40°C to +85°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Ultra-low quiescent current consumption for extended battery life
• High ripple rejection ratio suitable for noise-sensitive circuits
• Compact surface-mount packaging for space-constrained designs

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Battery-powered portable electronic devices
• Low-noise analog circuit power supplies
• Microcontroller system voltage regulation

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific manufacturer part number against official Nisshinbo Micro Devices documentation to ensure authenticity. Confirm that the DFN(PLP)1010-4 package dimensions match your PCB footprint requirements. Check for RoHS compliance status in the latest datasheet revision. Ensure the operating temperature range meets your environmental design constraints before finalizing procurement.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when low static current and high PSRR are critical for signal integrity. The 250 mA output capability suits moderate load applications. Compare the 105 mV typical dropout against other LDOs if input voltage headroom is limited. Consider the 0.8% output accuracy for precision reference requirements. Evaluate thermal dissipation limits based on the 550 mW power dissipation rating.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This regulator belongs to the RP123K series of low-noise LDOs from Nisshinbo Micro Devices. The series is designed for applications requiring minimal power consumption and high stability. The DFN(PLP)1010-4 package offers a small form factor compared to traditional SOT packages. It serves as a power management solution for modern compact electronics requiring efficient voltage conversion.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Check for direct pin-compatible alternatives within the same Nisshinbo family, such as other RP123K variants with different output voltages. Verify that substitute components maintain similar PSRR and quiescent current specifications. Ensure any replacement supports the required 250 mA output current and fits the DFN(PLP)1010-4 footprint.