RP131H121D5-T1-FE

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

The RP131H121D5-T1-FE is a low dropout regulator from the RP131x series, manufactured by Nisshinbo Micro Devices Inc. It provides a fixed output voltage of 1.2V with a maximum output current capability of 1A. The device operates within an input voltage range of 1.6V to 6.5V and features a typical supply current of 65µA. It utilizes a SOT-89-5 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

• Integrated auto discharge function for rapid output voltage reduction during standby mode
• Built-in inrush current limit circuit to manage startup surge currents
• Fold-back protection circuit activates during short-circuit conditions
• Thermal shutdown circuit prevents damage at elevated junction temperatures

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 D5 indicates the inclusion of the auto discharge function and the 1.2V fixed output voltage. Confirm the SOT-89-5 package type matches the design requirements. Ensure the ordering code corresponds exactly to the manufacturer's specification sheet to avoid functional discrepancies regarding the enable pin behavior or discharge capabilities.

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

Select this component when a fixed 1.2V rail is required with high current drive capability. The SOT-89-5 package offers higher power dissipation compared to smaller surface mount options. The auto discharge feature is critical for applications requiring fast output voltage decay upon disabling the regulator. Verify input voltage stability remains within the 1.6V to 6.5V operational range.

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

This part belongs to the RP131x series of low ON-resistance LDO regulators. The series supports various packages including DFN, HSOP, and TO-252. The RP131H variant specifically denotes the SOT-89-5 package configuration. The 'D' suffix in the part number signifies the presence of the auto discharge function, distinguishing it from the 'B' suffix variants which lack this feature.

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

RP131H121B5-T1-FE