RP131K301B-TR

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

The RP131K301B-TR is a fixed-output low dropout regulator from the Nisshinbo RP131x series, providing a stable 3.0V output with a maximum current capability of 1A. It operates within an input voltage range of 1.6V to 6.5V and features a typical supply current of 65µA. The device utilizes a DFN(PL)1820-6 package and includes built-in protections such as over-current limit, short-circuit protection, and thermal shutdown.

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

• Integrates a low ON-resistance transistor for efficient power regulation
• Includes chip enable functionality for ultra-low standby current consumption
• Features built-in inrush current limiting and fold-back protection circuits
• Incorporates thermal shutdown circuitry to prevent damage during overheating

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

• Power source for battery-powered equipment
• Power source for portable communication equipment
• Power source for notebook PCs
• Power source for home appliances

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

Verify the specific suffix 'B' indicates the absence of the auto-discharge function at off state. Confirm the package type matches the design requirements, as this part uses the DFN(PL)1820-6 form factor. Ensure external capacitor selection aligns with datasheet recommendations for stability, particularly regarding ESR characteristics for ceramic capacitors.

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

Select this component when a fixed 3.0V rail is required with high current drive capabilities up to 1A. Consider the DFN(PL)1820-6 package for high-density mounting applications. Evaluate the need for the chip enable pin if power management via standby modes is necessary for the system architecture.

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

This device belongs to the RP131x family of low voltage LDO regulators manufactured by Nisshinbo Micro Devices. The series offers various output voltages and packages, including DFN, SOT-89, HSOP, and TO-252 options. The RP131K variant specifically denotes the DFN(PL)1820-6 package configuration.

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

RP131K301D-TR (includes auto discharge function)

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

What is the purpose of the 'B' suffix in the part number?

The 'B' suffix indicates that the IC does not include the auto-discharge function at the off state.

How does the chip enable pin affect operation?

Driving the CE pin high activates the regulator, while driving it low enters standby mode, reducing supply current to approximately 0.15µA.