MIC2954-03WS-TR

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

The MIC2954-03WS-TR is a fixed positive low-dropout regulator delivering 5V output with ±1% accuracy. It supports up to 250mA load current within an operating temperature range of -40°C to +125°C. The device operates from input voltages between 2V and 30V, featuring dropout voltage typically at 375mV under full load. Quiescent ground pin current is 12mA maximum at full load. It includes fold-back current limiting, thermal shutdown, and reverse battery protection.

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

• Provides high-accuracy regulated output with extremely tight line and load regulation specifications.
• Features robust automotive-grade protection including reverse battery withstand and load dump tolerance.
• Incorporates fold-back current limiting and thermal shutdown for reliable operation under fault conditions.

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

• Battery powered equipment
• Automotive electronics
• Cellular telephones

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

Verify the specific suffix 'WS' corresponds to the SOT-223 package and RoHS compliance status as documented in the ordering information table. Confirm that the '-03' designation strictly indicates the 1.0% output voltage tolerance variant rather than the 0.5% version. Ensure the procurement channel provides traceability to the original Micrel datasheet specifications.

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

Select this component when a fixed 5V rail is required with minimal external circuitry. The SOT-223 package suits applications needing moderate power dissipation capabilities. Consider the 1% tolerance if tighter precision is unnecessary compared to the 0.5% variant. Evaluate thermal resistance requirements based on the expected ambient temperature and load current profile.

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

This part belongs to the MIC2954 family of efficient voltage regulators known for low dropout characteristics. The series includes adjustable versions and different package options like SOIC-8 and TO-220. The MIC2954-03WS-TR specifically represents the fixed 5V output configuration housed in a surface-mount SOT-223 enclosure, designed for space-constrained designs.

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

MIC2954-03BS is the non-tray equivalent in the same package. MIC2954-03WT serves as the through-hole alternative in TO-220-3. Cross-reference electrical parameters such as dropout voltage and quiescent current to ensure compatibility with existing board designs.