REG101UA-2.5/2K5G4

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

The REG101UA-2.5/2K5G4 is a low-dropout (LDO) voltage regulator manufactured by Texas Instruments, featuring a fixed 2.5 V output and a maximum output current of 100 mA. It operates within an input voltage range supporting the regulation and maintains a typical quiescent current of 100 µA. The device provides high line and load regulation with a dropout voltage of approximately 300 mV at full load. It is housed in an 8-pin SOIC package and supports operation from -40°C to +85°C.

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

• Fixed 2.5 V output voltage for precise reference applications
• Low quiescent current consumption for power efficiency
• High power supply rejection ratio across frequency ranges
• Integrated thermal shutdown and current limiting protection

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

• Portable battery-powered instrumentation
• Microcontroller power supply rails
• Sensor biasing circuits
• Data acquisition systems

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

Verify the complete part number including the suffix /2K5G4 to ensure correct reel packaging and RoHS compliance. Confirm the manufacturer is Texas Instruments to avoid counterfeit components. Check the datasheet for specific handling precautions regarding moisture sensitivity level and storage conditions prior to assembly.

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

Select this component when a stable 2.5 V reference is required with minimal current draw. Ensure the input voltage exceeds the output by at least the specified dropout voltage under maximum load conditions. Consider the SOIC-8 package constraints for thermal dissipation and PCB layout requirements compared to higher current alternatives.

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

This device belongs to the REG10x series of DMOS LDO regulators from Texas Instruments. It shares architectural similarities with the REG102 but offers lower output current capability optimized for precision reference duties rather than high-power driving. The series is designed for cost-sensitive applications requiring reliable linear regulation in compact packages.

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

Direct substitutes include the REG101UA-2.5/NOPB for lead-free compliance variations. Cross-reference with other 2.5 V LDOs only if pin compatibility and electrical specifications such as dropout voltage and quiescent current are strictly matched.