RP100N191B-TR-FE

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

The RP100N191B-TR-FE is a CMOS Low Dropout (LDO) voltage regulator manufactured by Nisshinbo Micro Devices. It provides a fixed output voltage of 1.9 V with high precision, achieving a voltage regulation accuracy of 0.6%. The device operates within an input voltage range of 1.4 V to 5.25 V and delivers a maximum output current of 150 mA. It features a typical Power Supply Rejection Ratio (PSRR) of 75 dB, ensuring effective noise suppression. The regulator is housed in a compact SOT-23-5 package and supports operation across a temperature range from -40°C to +85°C.

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

• Delivers precise 1.9 V output with 0.6% regulation accuracy for stable power supply requirements.
• Provides high noise immunity through a typical PSRR of 75 dB.
• Supports low dropout operation with an input voltage range starting at 1.4 V.

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

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

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

Verify the specific suffix 'B' corresponds to the required output voltage tolerance and package variant when sourcing. Confirm that the SOT-23-5 footprint matches the design layout. Ensure the 150 mA load capability meets the application's peak current demands. Check compliance documentation for RoHS status prior to integration.

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

Select this component when high output voltage accuracy is critical compared to standard LDOs. The 75 dB PSRR makes it suitable for noise-sensitive analog or RF sections. Consider the 150 mA limit against system load profiles. The wide input range allows flexibility in battery discharge curves.

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

This part belongs to the RP100N series of LDO regulators from Nisshinbo. The series is characterized by high precision and low noise performance. The RP100N191B-TR-FE specifically targets applications requiring tight voltage tolerances and effective ripple rejection in compact form factors.

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

Direct substitutes must match the 1.9 V output, 150 mA current rating, and SOT-23-5 package. Verify equivalent PSRR and accuracy specifications. Cross-reference pinouts to ensure compatibility without circuit redesign.