MIC5381-SSYFT-TR Equivalent & Substitute Parts

Part Overview

The MIC5381-SSYFT-TR is a linear voltage regulator IC from Microchip Technology, classified as a Power Management (PMIC) component. It provides dual positive fixed 3.3V outputs at 150mA each in a 6-TMLF surface mount package. The device is currently in active production status with 1077 units in stock. Alternative equivalent parts are necessary to support supply chain flexibility, inventory optimization, and design redundancy in applications requiring dual-output 3.3V regulation.

Key Parameters

Parameter	Value
Manufacturer	Microchip Technology
Category	Power Management (PMIC)
Output Configuration	Positive
Number of Regulators	2
Voltage - Output (Min/Fixed)	3.3V, 3.3V
Voltage - Input (Max)	5.5V
Current - Output	150mA, 150mA
Voltage Dropout (Max)	0.31V @ 150mA, 0.31V @ 150mA
Current - Quiescent (Iq)	45 µA
PSRR	60dB (1kHz)
Package / Case	6-UFQFN, 6-TMLF®
Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MIC5381-SSYFT-TR is determined by strict parametric matching across the following critical criteria:

Output Specification Match: Both output voltage levels (3.3V, 3.3V) and current ratings (150mA, 150mA) must be identical.

Electrical Performance: Maximum input voltage (5.5V), dropout voltage (0.31V @ 150mA for each output), quiescent current (45 µA), and PSRR (60dB @ 1kHz) must match exactly.

Package Compatibility: Surface mount 6-TMLF® (1x1) package with identical pin configuration and footprint.

Regulatory Compliance: RoHS3 compliance, MSL Level 1, and identical REACH/ECCN classifications.

Manufacturer & Product Status: Microchip Technology manufacture with active product status.

The MIC5380-SSYFT-TR meets all substitution criteria and is classified as a parametric equivalent.

Parameter Comparison

Parameter	MIC5381-SSYFT-TR (Main)	MIC5380-SSYFT-TR (Substitute)
Manufacturer	Microchip Technology	Microchip Technology
Category	Power Management (PMIC)	Power Management (PMIC)
Packaging	Tape & Reel (TR)	Tape & Reel (TR)
Output Configuration	Positive	Positive
Output Type	Fixed	Fixed
Number of Regulators	2	2
Voltage - Input (Max)	5.5V	5.5V
Voltage - Output (Min/Fixed)	3.3V, 3.3V	3.3V, 3.3V
Voltage Dropout (Max)	0.31V @ 150mA, 0.31V @ 150mA	0.31V @ 150mA, 0.31V @ 150mA
Current - Output	150mA, 150mA	150mA, 150mA
Current - Quiescent (Iq)	45 µA	45 µA
Current - Supply (Max)	85 µA	85 µA
PSRR	60dB (1kHz)	60dB (1kHz)
Control Features	Enable	Enable
Protection Features	Over Current, Over Temperature	Over Current, Over Temperature
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	6-UFQFN, 6-TMLF®	6-UFQFN, 6-TMLF®
Supplier Device Package	6-TMLF® (1x1)	6-TMLF® (1x1)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99
HTSUS	8542.39.0001	8542.39.0001
Product Status	Active	Active
Inventory (Pcs)	1077	21521

Engineering Selection Recommendations

Both the MIC5381-SSYFT-TR and MIC5380-SSYFT-TR are active production components from Microchip Technology with identical electrical specifications, package configurations, and regulatory compliance certifications. Selection between these parts should be based on inventory availability and supply chain requirements. The MIC5380-SSYFT-TR offers significantly higher inventory availability (21521 units versus 1077 units), making it the preferred choice for high-volume procurement or extended lead-time mitigation. Both parts maintain ROHS3 compliance, MSL Level 1 rating, and EAR99 export classification. Pin-for-pin compatibility and identical thermal/electrical performance ensure direct substitution without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Are MIC5381-SSYFT-TR and MIC5380-SSYFT-TR pin-for-pin compatible?

A: Yes. Both devices use the 6-TMLF® (1x1) surface mount package with identical pinout and electrical interface. Direct substitution on the PCB is supported without layout modifications.

Q: What are the critical parameters that define substitution eligibility?

A: Substitution is determined by matching output voltage levels (3.3V, 3.3V), output current ratings (150mA, 150mA), maximum input voltage (5.5V), dropout voltage (0.31V @ 150mA), quiescent current (45 µA), PSRR (60dB @ 1kHz), package type (6-TMLF®), and regulatory compliance status (ROHS3, MSL Level 1).

Q: Can these parts be used interchangeably in production?

A: Yes. Identical electrical specifications, package configurations, and compliance certifications support interchangeable use in production environments. Inventory selection should be based on supply availability.

Q: What is the difference between MIC5381 and MIC5380 base product numbers?

A: The base product numbers differ, but the SSYFT-TR variants of both parts are parametrically equivalent. All electrical and mechanical specifications are identical.

Q: Are there any thermal or reliability differences between these parts?

A: No differences are specified in the provided parameters. Both parts operate across -40°C to 125°C, feature identical protection mechanisms (Over Current, Over Temperature), and carry the same MSL Level 1 rating.

Q: What packaging format is used for these parts?

A: Both parts are supplied in Tape & Reel (TR) format in the 6-TMLF® (1x1) surface mount package, suitable for automated assembly processes.

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