RP130K331B-TR-Y

Product Overview

The RP130K331B-TR-Y from Nisshinbo Micro Devices Inc. is a fixed-output linear voltage regulator for single-rail 3.3 V power delivery in compact surface-mount designs. It provides a positive fixed output at up to 150 mA from an input voltage of up to 6.5 V, with a maximum dropout of 0.51 V at the rated output current. The device includes an enable control and overcurrent protection, and it is specified for operation from -40°C to 105°C ambient. The 4-UDFN exposed pad package supports space-constrained board layouts where a low-current regulated supply is required.

Key Features

• Single positive fixed 3.3 V linear regulator output
• Maximum output current of 150 mA
• Maximum input voltage of 6.5 V
• Maximum voltage dropout of 0.51 V at 150 mA
• Quiescent current of 58 µA
• PSRR of 80 dB at 1 kHz
• Enable control feature
• Overcurrent protection
• Operating temperature range of -40°C to 105°C ambient
• Surface-mount 4-UDFN exposed pad package, DFN(PL)1010-4

Applications

• Portable battery-powered electronics that require a regulated 3.3 V rail for low-current sensor or logic loads.
• Embedded control boards where a 3.3 V supply is used for microcontroller peripherals or interface circuits.
• Circuits that use an enable-controlled regulator to manage a 3.3 V output during power sequencing or load switching.
• Subsystems that require rejection of input ripple on a 3.3 V rail, where the 80 dB PSRR at 1 kHz is relevant.

Design & Procurement Notes

When selecting the RP130K331B-TR-Y for a design, verify that the input voltage remains within the 6.5 V maximum and provides sufficient headroom above 3.3 V, especially at 150 mA where the dropout can be as high as 0.51 V. The 58 µA quiescent current is relevant for battery-powered or standby-sensitive circuits, while the 80 dB PSRR at 1 kHz can be considered for loads sensitive to input ripple. The enable control can be used to manage regulator output state during power sequencing, and overcurrent protection should be coordinated with the expected load behavior. Layout should account for the 4-UDFN exposed pad package and the -40°C to 105°C ambient operating range. For procurement alignment, specify the exact part number and footprint to ensure consistency with surface-mount assembly and the single-output 3.3 V fixed regulator requirement.