MIC5201YM Equivalent & Substitute Parts

Part Overview

The MIC5201YM is an active linear voltage regulator IC from Microchip Technology, classified as a positive adjustable power management integrated circuit (PMIC). This device delivers 150mA output current with adjustable voltage regulation capabilities, housed in an 8-SOIC surface mount package. The part is currently in active production status with 1855 units in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the specified parameter ranges.

Key Parameters

Parameter	MIC5201YM Value
Manufacturer	Microchip Technology
Category	Power Management (PMIC)
Output Configuration	Positive
Output Type	Adjustable
Number of Regulators	1
Voltage - Input (Max)	16V
Voltage - Output (Min/Fixed)	1.242V
Voltage - Output (Max)	15.6V
Current - Output	150mA
Voltage Dropout (Max)	0.4V @ 150mA
Operating Temperature	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the MIC5201YM are qualified based on the following criteria:

Electrical Compatibility Requirements:

Output configuration: Positive adjustable
Number of regulators: Single output
Package type: 8-SOIC surface mount
Output current capability: Minimum 150mA
Input voltage rating: Minimum 16V
Control features: Enable function present
Protection features: Over temperature and reverse polarity protection

Mechanical Compatibility:

Package footprint: 8-SOIC (0.154", 3.90mm Width)
Mounting type: Surface mount
Moisture sensitivity: MSL 1 (Unlimited)

Compliance Requirements:

RoHS3 compliant
Active product status

The LT1121 series (Analog Devices Inc.) and LT1521 series meet these criteria with equivalent or superior electrical specifications. Packaging variants (Tube, Tape & Reel, Cut Tape) are interchangeable for the same base part number.

Parameter Comparison

Parameter	MIC5201YM	LT1121ACS8#PBF	LT1121ACS8#TRPBF	LT1121CS8#PBF	LT1121CS8#TRPBF	LT1521IS8#PBF
Manufacturer	Microchip	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Analog Devices
Output Configuration	Positive	Positive	Positive	Positive	Positive	Positive
Output Type	Adjustable	Adjustable	Adjustable	Adjustable	Adjustable	Adjustable
Number of Regulators	1	1	1	1	1	1
Voltage - Input (Max)	16V	30V	30V	30V	30V	20V
Voltage - Output (Min/Fixed)	1.242V	3.75V	3.75V	3.75V	3.75V	3.8V
Voltage - Output (Max)	15.6V	30V	30V	30V	30V	20V
Current - Output	150mA	150mA	150mA	150mA	150mA	300mA
Voltage Dropout (Max)	0.4V @ 150mA	0.7V @ 150mA	0.7V @ 150mA	0.7V @ 150mA	0.7V @ 150mA	0.75V @ 300mA
Operating Temperature	-40°C ~ 85°C	0°C ~ 125°C	0°C ~ 125°C	0°C ~ 125°C	0°C ~ 125°C	-40°C ~ 125°C
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All substitute parts listed maintain active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment with the MIC5201YM.

LT1121 Series (LT1121ACS8#PBF, LT1121ACS8#TRPBF, LT1121CS8#PBF, LT1121CS8#TRPBF): These parts provide equivalent 150mA output current with identical 8-SOIC packaging. The LT1121 series offers higher maximum input voltage (30V vs. 16V) and extended upper operating temperature (125°C vs. 85°C). Packaging variants differ only in delivery format: Tube (PBF) or Tape & Reel (TRPBF). Selection between these variants depends on assembly process requirements.

LT1521IS8#PBF: This part doubles the output current capability to 300mA while maintaining the same 8-SOIC package footprint. The LT1521 series supports the extended temperature range (-40°C ~ 125°C) matching the MIC5201YM lower temperature limit. Maximum input voltage is 20V, exceeding the MIC5201YM specification of 16V.

Frequently Asked Questions (FAQ)

Q: Can LT1121 series parts directly replace MIC5201YM in existing designs?

A: Yes, for applications operating within the MIC5201YM's specified parameter ranges. The LT1121 series maintains identical 8-SOIC package geometry and 150mA output current. Pin-to-pin compatibility exists for the enable control and protection features. However, verify that your circuit design does not depend on the MIC5201YM's specific minimum output voltage (1.242V) or lower quiescent current specifications.

Q: What is the difference between LT1121ACS8#PBF and LT1121ACS8#TRPBF?

A: Both parts are electrically identical. The difference is packaging format: PBF indicates Tube packaging for manual or small-volume assembly, while TRPBF indicates Tape & Reel format for automated high-volume production. Select based on your manufacturing process requirements.

Q: When should LT1521IS8#PBF be selected over LT1121 variants?

A: Select LT1521IS8#PBF when your application requires output current exceeding 150mA, up to 300mA maximum. The LT1521 maintains the same 8-SOIC package and adjustable output configuration. The extended temperature range (-40°C ~ 125°C) also provides additional margin for harsh environment applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all listed substitute parts carry ROHS3 compliance certification, matching the MIC5201YM compliance status.

Q: What packaging options are available for the LT1121 series?

A: The LT1121 base part number is available in three packaging formats: Tube (PBF), Tape & Reel (TRPBF), and Cut Tape with Digi-Reel (TRPBF variant). All maintain identical electrical specifications and 8-SOIC footprint.

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