R1172D181A-TR-FE

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

The R1172D181A-TR-FE is a low voltage drop-out (LDO) linear voltage regulator manufactured by Nisshinbo Micro Devices. It provides a fixed output voltage of 1.8V with a maximum continuous output current of 1A. The device is housed in a compact HSON-6 package, measuring 2.9x2.8mm. It operates within an input voltage range up to 6V and supports junction temperatures from -40°C to +85°C. Key electrical characteristics include a typical power supply rejection ratio (PSRR) of 70dB at 1kHz and a maximum dropout voltage of 0.32V at full load.

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

• Integrated overcurrent protection and thermal shutdown circuits for enhanced reliability under fault conditions.
• High power supply rejection ratio ensures stable output voltage against input line noise.
• Compact surface-mount packaging facilitates space-constrained printed circuit board layouts.

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

• Portable battery-powered electronic devices requiring efficient power regulation.
• Embedded systems utilizing microprocessors or memory components needing stable 1.8V rails.
• Communication equipment interfaces demanding low-noise power supplies.

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

Verify the specific suffix codes on the component marking against the official datasheet to confirm the exact output voltage and package variant. Ensure that the ordering quantity aligns with the manufacturer's standard reel size requirements. Cross-reference the RoHS compliance status with current environmental regulations applicable to your region before finalizing procurement orders.

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

Select this component when a fixed 1.8V output is required with high current capability in a minimal footprint. Compare the dropout voltage specifications against the minimum available input voltage headroom in the target design. Evaluate the thermal performance of the HSON-6 package relative to the expected ambient temperature and power dissipation levels in the application environment.

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

This part belongs to the R1172D series of LDO regulators, designed for general-purpose power management applications. The series offers various fixed output voltages to accommodate different logic families. The R1172D variant specifically utilizes the HSON-6 package, distinguishing it from other series members that may use SOT-23-5 packages while maintaining similar electrical performance profiles.

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

Publicly confirmed parameter-equivalent substitutes include R1172D181B-TR-FE and R1172D181D-TR-FE. These alternatives share identical electrical specifications and pin configurations, allowing for direct replacement without circuit redesign. Verify package compatibility and marking differences before substitution.