RP111N331B-TR-FE

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

The RP111N331B-TR-FE is a CMOS-based low dropout regulator from the RP111x series, providing a fixed 3.3V output with a maximum current of 500mA. It operates within an input voltage range of 1.4V to 5.25V and features a typical supply current of 80µA. The device offers high output voltage accuracy of ±0.8% and excellent ripple rejection of 75dB at 1kHz. It includes built-in foldback protection, thermal shutdown, and inrush current limiting circuits for enhanced reliability.

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

• Features fast load transient response and low noise characteristics suitable for sensitive electronics.
• Includes comprehensive protection mechanisms such as thermal shutdown and inrush current limiting.
• Provides high precision output voltage regulation with minimal temperature drift.

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

• Power source for portable communication equipment
• Power source for battery-powered electrical appliances
• Power source for cameras, VCRs, and camcorders

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

Verify the specific suffix 'B' indicates the absence of the auto discharge function at the off state. Confirm the package type matches the SOT-23-5 designation required for the design. Ensure compatibility with ceramic capacitors of 1.0µF or more for stable operation as specified in the datasheet requirements.

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

Select this component when a fixed 3.3V rail is needed with moderate current demands up to 500mA. It is suitable for applications requiring low dropout performance and good line regulation. Consider the SOT-23-5 package constraints regarding power dissipation and thermal management during PCB layout.

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

This part belongs to the RP111x series of low voltage LDO regulators manufactured by Nisshinbo Micro Devices. The series is designed for portable devices requiring efficient power management with small form factors. The RP111N variant specifically utilizes the SOT-23-5 package for surface mount applications.

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

RP111N331D-TR-FE (Same voltage, different package option)

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

What is the difference between the B and D suffixes in the RP111N series?

The suffix 'B' indicates the device does not have an auto discharge function at the off state, while 'D' indicates it includes this feature.

What type of capacitors are recommended for the RP111N331B-TR-FE?

Ceramic capacitors are recommended for both input and output, with a capacitance value of 1.0µF or more to ensure stable operation.