REG102NA-A/250G4

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

The REG102NA-A/250G4 is a single-channel adjustable positive low-dropout linear voltage regulator manufactured by Texas Instruments. It operates within an input voltage range of 2.5 V to 5.5 V and delivers a maximum output current of 250 mA. The device utilizes NMOS technology and features a dropout voltage of 0.27 V. It provides high accuracy with a maximum regulation error of ±1.5% and maintains very low noise characteristics, specified at 28 µVrms. The unit is housed in a 5-pin SOT-23 surface-mount package.

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

• Adjustable output voltage capability across the 2.5 V to 5.5 V range
• Low noise performance suitable for sensitive analog circuits
• High efficiency with low ground current consumption
• Fast transient response for dynamic load conditions

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

• Portable battery-powered equipment requiring stable power rails
• Noise-sensitive analog signal processing stages
• Embedded systems with strict space constraints
• Precision measurement instrumentation

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

Verify the specific suffix 'A' indicates the adjustable version distinct from fixed-output variants. Confirm the '/250G4' designation aligns with RoHS compliance and lead-free manufacturing standards required for your assembly process. Ensure the SOT-23-5 footprint matches your PCB layout specifications before finalizing orders.

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

Select this component when an adjustable output is necessary within the 2.5 V to 5.5 V window. It is appropriate for designs prioritizing low noise and fast transient response over ultra-low quiescent current found in other LDO families. Verify that the external resistor network for setting the output voltage does not introduce excessive noise or stability issues.

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

This part belongs to the REG102 family of low-noise, low-dropout regulators designed for portable applications. Unlike fixed-voltage counterparts, the adjustable variant offers flexibility in setting precise output levels. It shares core architectural benefits such as DMOS/NMOS pass elements and internal compensation, ensuring stability without external capacitors in many configurations.

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

Direct functional substitutes include other adjustable LDOs from the same family, such as the REG102GA-A, which offers similar electrical characteristics but in a different SOT-223-6 package. Cross-referencing pinouts and thermal dissipation requirements is essential when moving between package types.