MIC5355-SGYMME Equivalent & Substitute Parts

Part Overview

The MIC5355-SGYMME is a linear voltage regulator IC from Microchip Technology designed for positive fixed dual-output applications. This device provides two independent 500mA regulated outputs at 1.8V and 3.3V from a maximum input of 5.5V. The part is currently in active production status with 17,666 units in stock. Alternative models may be required due to inventory constraints, specific performance requirements, or application-specific electrical characteristics such as dropout voltage or quiescent current specifications.

Key Parameters

Parameter	MIC5355-SGYMME
Manufacturer	Microchip Technology
Category	Power Management (PMIC)
Package Type	8-MSOP-EP (0.118", 3.00mm Width)
Output Configuration	Positive Fixed, 2 Outputs
Output Voltage	1.8V, 3.3V
Output Current	500mA per output
Input Voltage (Max)	5.5V
Dropout Voltage (Max)	0.8V @ 500mA
Quiescent Current	0.53 µA
Operating Temperature	-40°C to 125°C
Protection Features	Over Current, Over Temperature
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

The MIC5357-SGYMME qualifies as a parametric equivalent to the MIC5355-SGYMME based on the following substitution criteria:

Matching Parameters (Substitution Basis):

Identical manufacturer: Microchip Technology
Identical package: 8-MSOP-EP with exposed pad
Identical output configuration: Positive fixed, dual output
Identical output voltages: 1.8V and 3.3V
Identical output current rating: 500mA per output
Identical maximum input voltage: 5.5V
Identical operating temperature range: -40°C to 125°C
Identical protection features: Over Current and Over Temperature
Identical control features: Enable function
Identical compliance: ROHS3, REACH Unaffected

Differing Parameters (Performance Variations):

Dropout voltage: MIC5357 offers 0.3V @ 500mA versus MIC5355's 0.8V @ 500mA
Quiescent current: MIC5357 draws 175 µA versus MIC5355's 0.53 µA
PSRR performance: MIC5357 provides 70dB ~ 45dB (1kHz ~ 20kHz) versus MIC5355's 60dB (1kHz)

Parameter Comparison

Parameter	MIC5355-SGYMME	MIC5357-SGYMME	Difference
Manufacturer	Microchip Technology	Microchip Technology	None
Package	8-MSOP-EP	8-MSOP-EP	None
Output Voltage	1.8V, 3.3V	1.8V, 3.3V	None
Output Current	500mA per output	500mA per output	None
Input Voltage (Max)	5.5V	5.5V	None
Dropout Voltage @ 500mA	0.8V	0.3V	MIC5357 lower by 0.5V
Quiescent Current	0.53 µA	175 µA	MIC5355 lower by 174.47 µA
PSRR @ 1kHz	60dB	70dB	MIC5357 higher by 10dB
Operating Temperature	-40°C to 125°C	-40°C to 125°C	None
Protection Features	Over Current, Over Temperature	Over Current, Over Temperature	None
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	None
Product Status	Active	Active	None
Inventory	17,666 Pcs	2,900 Pcs	MIC5355 higher availability

Engineering Selection Recommendations

Both the MIC5355-SGYMME and MIC5357-SGYMME are active production devices from Microchip Technology with identical ROHS3 compliance and REACH unaffected status. Selection between these parts depends on application-specific electrical requirements:

Select MIC5355-SGYMME when:

Ultra-low quiescent current is critical (0.53 µA versus 175 µA)
Battery-powered or energy-harvesting applications require minimal standby power consumption
Higher inventory availability is preferred (17,666 units in stock)

Select MIC5357-SGYMME when:

Lower dropout voltage is required (0.3V versus 0.8V at 500mA)
Applications operate with tight input-to-output voltage margins
Superior PSRR performance is needed (70dB at 1kHz versus 60dB)

Both devices maintain identical package footprint (8-MSOP-EP), output specifications (1.8V/3.3V at 500mA), and thermal operating range (-40°C to 125°C), ensuring direct PCB compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can MIC5357-SGYMME directly replace MIC5355-SGYMME on existing PCBs?

A: Yes. Both parts use identical 8-MSOP-EP packaging with the same pinout and footprint. No PCB layout changes are required for physical substitution.

Q: What is the primary electrical difference between these parts?

A: The MIC5357-SGYMME features lower dropout voltage (0.3V versus 0.8V at 500mA) and higher quiescent current (175 µA versus 0.53 µA). The MIC5355-SGYMME is optimized for low-power standby applications, while the MIC5357-SGYMME provides better performance under load conditions with reduced voltage headroom requirements.

Q: Are both parts suitable for the same temperature range?

A: Yes. Both the MIC5355-SGYMME and MIC5357-SGYMME operate across -40°C to 125°C, making them interchangeable for temperature-related specifications.

Q: Do both parts provide the same output voltages?

A: Yes. Both regulators provide fixed dual outputs at 1.8V and 3.3V with 500mA per output, identical to the original specification.

Q: Which part should be selected for battery-powered applications?

A: The MIC5355-SGYMME is preferred for battery-powered designs due to its significantly lower quiescent current (0.53 µA), which minimizes standby power drain and extends battery life.

Q: What compliance certifications apply to both parts?

A: Both the MIC5355-SGYMME and MIC5357-SGYMME are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

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