MIC5201-3.0YS-TR Equivalent & Substitute Parts

Part Overview

The MIC5201-3.0YS-TR is a linear voltage regulator IC manufactured by Microchip Technology, designed for positive fixed 3V output applications. This Surface Mount device in SOT-223-3 package delivers 150mA output current with integrated protection features including over-current, over-temperature, and reverse polarity protection. The part is Active status and ROHS3 compliant, suitable for applications requiring regulated 3V power from input sources up to 26V.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained within the specified parameter ranges for this product category.

Substiute Parts

MIC5201-3.0YS-TR

Microchip TechnologyIn Stock: 3887MIC5201-3.0YS-TR Datasheet

Current PartRFQ

LT1521CST-3#PBF

Analog Devices Inc.In Stock: 2020LT1521CST-3#PBF Datasheet

MFR RecommendedRFQ

LT1521IST-3#PBF

Analog Devices Inc.In Stock: 790LT1521IST-3#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MIC5201-3.0YS-TR are qualified based on the following criteria:

• Fixed output voltage of 3V
• SOT-223-3 package compatibility
• Positive output configuration with single regulator
• Protection features including over-current and over-temperature
• ROHS3 compliance and Active product status
• Surface Mount mounting type

The LT1521CST-3#PBF and LT1521IST-3#PBF from Analog Devices Inc. meet these substitution criteria. Both devices maintain the 3V fixed output voltage and SOT-223-3 package specification. While these substitutes provide higher output current capability (300mA versus 150mA) and lower quiescent current, they remain functionally compatible for applications designed around the MIC5201-3.0YS-TR specifications.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain Active product status and ROHS3 compliance. The LT1521IST-3#PBF extends the operating temperature range to -40°C ~ 125°C, matching the lower temperature limit of the MIC5201-3.0YS-TR while providing extended upper temperature capability. The LT1521CST-3#PBF operates from 0°C ~ 125°C, which may limit application in environments requiring -40°C operation.

Input voltage maximum specification differs between the main part (26V) and substitutes (20V). Applications requiring input voltages above 20V must retain the MIC5201-3.0YS-TR.

Both LT1521 variants provide superior quiescent current performance (25 µA versus 400 µA), beneficial for battery-powered or low-power standby applications.

Frequently Asked Questions (FAQ)

Q: Can LT1521CST-3#PBF replace MIC5201-3.0YS-TR in all applications?

A: The LT1521CST-3#PBF is compatible for applications operating within 0°C ~ 125°C temperature range and input voltages not exceeding 20V. Applications requiring -40°C operation or input voltages above 20V require the original MIC5201-3.0YS-TR or the LT1521IST-3#PBF.

Q: What is the difference between LT1521CST-3#PBF and LT1521IST-3#PBF?

A: Both parts are functionally identical with identical electrical specifications. The primary difference is operating temperature range: LT1521CST-3#PBF operates 0°C ~ 125°C, while LT1521IST-3#PBF operates -40°C ~ 125°C. Selection depends on application temperature requirements.

Q: Are the substitute parts pin-compatible with MIC5201-3.0YS-TR?

A: All three parts use the SOT-223-3 package with identical pinout configuration, enabling direct board-level substitution without layout modifications.

Q: Why do substitute parts have higher output current ratings?

A: The LT1521 series is designed with higher current capability (300mA) compared to the MIC5201-3.0YS-TR (150mA). Applications designed for 150mA operation remain fully compatible, as the substitute parts operate within their specified range at lower current levels.

Q: What compliance certifications apply to all three parts?

A: All parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8542.39.0001.