RP114K131B-TR

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

The RP114K131B-TR is a CMOS-based low dropout regulator from the RP114x series, manufactured by Nisshinbo Micro Devices. It provides a fixed output voltage of 1.3V with a maximum output current of 300mA. The device operates within an input voltage range of 1.4V to 5.25V and features a typical supply current of 50µA. It includes a chip enable function for standby mode control and offers high ripple rejection of 75dB at 1kHz. The component is housed in a DFN(PL)1010-4 package.

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

• Built-in short circuit protection circuit limits output current during fault conditions.
• Chip enable pin allows switching between active operation and low-power standby mode.
• Internal phase compensation ensures stable operation with external ceramic capacitors.

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

• Power source for portable communication equipment
• Power source for battery-powered electrical appliances such as cameras and camcorders

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

Verify that the specific part number matches the required output voltage and package type before ordering. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors. Ensure that the procurement channel provides valid traceability data for quality assurance purposes.

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

Select this component when a fixed 1.3V output is required with a maximum load of 300mA. The DFN(PL)1010-4 package is suitable for high-density board mounting. Consider the 50µA supply current for battery-operated applications requiring extended standby times via the chip enable feature.

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

This component belongs to the RP114x series of low dropout regulators designed for portable electronic devices. The series offers various fixed output voltages ranging from 0.8V to 3.6V in 0.1V steps. The RP114K variant specifically utilizes the DFN(PL)1010-4 package format.

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

Compatible substitutes include other RP114x series parts with different output voltages or packages, such as RP114Qxx1y-TR-FE (SC-88A package) or RP114Nxx1y-TR-FE (SOT-23-5 package). Verify pin compatibility and thermal performance when substituting.

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

What is the purpose of the Chip Enable (CE) pin?

The CE pin controls the operating state of the regulator. A high signal activates the device, while a low signal switches it to standby mode, reducing supply current to approximately 0.1µA.

What type of capacitors are recommended for this IC?

Ceramic capacitors with a capacitance of 1.0µF or more are recommended for both input and output connections to ensure stability and proper phase compensation.