R1172D311D-TR-FE

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

The R1172D311D-TR-FE is a fixed-output low dropout (LDO) voltage regulator manufactured by Nisshinbo Micro Devices. It provides a stable 3.1 V output with a maximum continuous current of 1 A. The device operates within an input voltage range of 1.4 V to 6 V and features a typical power supply rejection ratio (PSRR) of 70 dB. Key electrical parameters include a line regulation of 0.05 %/V, load regulation of 50 mV, and a quiescent current of 60 µA. The unit is housed in an HSON-6 surface-mount package and supports operation from -40 °C to +85 °C.

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

• Provides a fixed 3.1 V output voltage with high accuracy for sensitive circuitry.
• Delivers up to 1 A of output current while maintaining low dropout performance.
• Features high ripple rejection capability to minimize noise on the power rail.

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

• Powering microcontrollers and digital logic circuits requiring a stable 3.1 V supply.
• Biasing RF modules and sensors in portable electronic devices.
• Voltage regulation in battery-powered systems operating between 1.4 V and 6 V.

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

Verify the specific suffix 'D' against the manufacturer's official datasheet to confirm the package type and tape-and-reel configuration. Ensure the ordering quantity aligns with the standard reel size specified in the product documentation. Cross-reference the part number with the latest revision history to avoid discrepancies in pinout or thermal characteristics.

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

Select this component when a precise 3.1 V fixed output is required rather than an adjustable variant. The HSON-6 package offers a compact footprint suitable for space-constrained designs. Consider the 60 µA quiescent current for battery life calculations and verify that the 1 A current rating meets the peak load requirements of the target application without exceeding thermal limits.

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

This part belongs to the R1172D series of low voltage LDO regulators from Nisshinbo. The series is characterized by CMOS technology designed for efficiency and low noise. The R1172D variants typically utilize the HSON-6 package, distinguishing them from other series members that may use SOT-23 or SOT-89 packages. This specific model represents a fixed-output option within that family.

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

Direct substitutes within the same series include R1172D311B-TR-FE, which shares identical electrical specifications but utilizes a different package variant. Other compatible options may include parts from the R1172N or R1172H series if the package form factor can be adapted, provided the output voltage and current ratings remain consistent.