RP115L291D-E2

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

The RP115L291D-E2 is a fixed-output low dropout (LDO) voltage regulator from the Nisshinbo RP115x series. It provides a stable 2.9V output with a maximum continuous current of 500mA and peak capability up to 1A. The device operates within an input voltage range supporting its linear regulation architecture, featuring a typical power supply rejection ratio (PSRR) of 80dB. It is housed in an 8-pin DFN-1216 package suitable for surface mount technology. The component functions as a positive polarity regulator with line regulation of 0.02%/V and load regulation of 1mV. Operating temperatures span from -40°C to +85°C, with a maximum power dissipation of 625mW.

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

• Fixed 2.9V output voltage configuration
• High power supply rejection ratio for noise reduction
• Low quiescent current operation
• Compact surface-mount packaging

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

• Portable electronic devices requiring stable low-voltage rails
• Battery-powered systems needing efficient linear regulation
• Embedded circuits sensitive to power supply noise

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

Verify the complete part number including suffixes such as E2 for lead-free compliance and D for package type against official Nisshinbo documentation. Confirm that the required output voltage matches the fixed 2.9V specification, as this parameter cannot be adjusted externally. Ensure thermal management strategies account for the 625mW power dissipation limit in the DFN-1216-8 package under expected load conditions.

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

Select this component when a precise 2.9V rail is required with moderate current demands up to 500mA. It is suitable for applications prioritizing low noise due to its high PSRR characteristics. Consider the DFN-1216-8 footprint constraints during PCB layout. Compare against switching regulators if higher efficiency or different voltage levels are necessary, as this is a linear solution optimized for simplicity and low ripple.

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

This device belongs to the RP115x family of low dropout regulators designed by Nisshinbo Micro Devices. The series offers various fixed output voltages, sharing common architectural features such as low standby current and compact packaging. The RP115L291D-E2 specifically targets the 2.9V segment, providing a reliable linear regulation solution within the broader portfolio of power management integrated circuits offered by the manufacturer.

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

Direct substitutes must match the 2.9V fixed output, 500mA current rating, and DFN-1216-8 package. Verify pinout compatibility and electrical specifications such as PSRR and dropout voltage before substitution. Cross-reference with other Nisshinbo RP115x variants only if voltage requirements differ.