REG103GA-3

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

The REG103GA-3 is a DMOS low dropout regulator manufactured by Burr-Brown, now part of Texas Instruments. It provides a fixed 3V output with a maximum current capability of 500mA. The device utilizes ultra-low dropout technology, achieving typical dropout voltages as low as 115mV at full load. It operates with input voltages up to 15V and requires no external output capacitor for stability. Packaged in a surface-mount SOT-223-6 configuration, it integrates thermal shutdown and current limiting for robust protection.

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

• DMOS topology enabling ultra-low dropout voltage performance
• Fixed 3V output with 500mA continuous current capability
• Stable without requiring external output capacitors
• Integrated thermal shutdown and current limit protection

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

• Battery-powered portable electronics requiring efficient voltage regulation
• Embedded systems needing stable 3V logic supplies
• Low noise analog circuit power conditioning
• Space-constrained designs utilizing surface-mount packaging

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

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix indicates the 3V fixed output variant. Check for RoHS compliance status if required for your assembly process. Note that this part may be obsolete; ensure availability of suitable replacements before finalizing procurement plans.

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

Select this regulator when a fixed 3V supply is needed with minimal voltage drop across the input-output differential. It is suitable for applications where output capacitor space is limited due to its internal compensation design. Ensure the input voltage remains within the 15V maximum rating and consider thermal dissipation requirements for the SOT-223 package under high load conditions.

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

This component belongs to the REG103 family of low dropout regulators from Burr-Brown. These devices are designed for general-purpose linear regulation tasks. The REG103GA-3 specifically denotes the 3V output version within this series. Texas Instruments acquired Burr-Brown, so documentation and support are managed under the TI umbrella.

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

Public sources indicate the REG103GA-3 is obsolete. Consider checking for newer iterations within the same family or compatible LDOs from Texas Instruments. Verify pin compatibility and electrical specifications such as dropout voltage and current limits when selecting an alternative.