MIC94310-MYCS-TR Equivalent & Substitute Parts

Part Overview

The MIC94310-MYCS-TR is a linear voltage regulator IC from Microchip Technology's Ripple Blocker™ series, delivering a fixed 2.8V output at 200mA in a 4-WLCSP (0.88x0.88) package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part provides positive fixed output configuration with integrated over-current and over-temperature protection, suitable for low-power applications requiring compact surface-mount solutions.

Key Parameters

Parameter	Value
Manufacturer	Microchip Technology
Category	Power Management (PMIC)
Output Configuration	Positive Fixed
Voltage - Output (Fixed)	2.8V
Voltage - Input (Max)	3.6V
Current - Output	200mA
Voltage Dropout (Max)	0.1V @ 200mA
Current - Quiescent (Iq)	250 µA
PSRR	85dB ~ 50dB (100Hz ~ 10MHz)
Protection Features	Over Current, Over Temperature
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	4-WLCSP (0.88x0.88)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the MIC94310-MYCS-TR is determined by the following critical parameters:

Primary Substitution Criteria:

Output voltage: 2.8V fixed
Output current capability: 200mA minimum
Input voltage range: Maximum 3.6V
Voltage dropout: 0.1V @ 200mA or lower
Quiescent current: 250 µA or lower
Protection features: Over-current and over-temperature protection
Operating temperature range: -40°C to 125°C
Surface-mount packaging with compact footprint
RoHS3 compliance and MSL 1 rating

Substitute Categories:

Category 1: Direct Microchip Equivalent MIC94310-MYMT-TR maintains identical electrical specifications and Ripple Blocker™ series characteristics. The primary difference is packaging format (4-TDFN vs. 4-WLCSP), with the TDFN variant offering larger inventory availability and active product status.

Category 2: Texas Instruments Power Switch Alternatives The TPS22914 and TPS22915 series represent functional alternatives from a different manufacturer. These are power switch/driver ICs with N-channel output configuration, 1:1 ratio, and 2A output capability. While these devices operate at higher current levels (2A vs. 200mA) and different voltage load ranges (1.05V ~ 5.5V), they provide equivalent protection features and surface-mount 4-DSBGA packaging. The TPS22915 variants include load discharge functionality as an additional feature.

Parameter Comparison

Parameter	MIC94310-MYCS-TR	MIC94310-MYMT-TR	TPS22914BYFPR	TPS22914CYFPR	TPS22915CYFPR
Manufacturer	Microchip	Microchip	Texas Instruments	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Active	Active	Active
Output Type	Fixed Positive	Fixed Positive	N-Channel High Side	N-Channel High Side	N-Channel High Side
Current - Output (Max)	200mA	200mA	2A	2A	2A
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	4-WLCSP (0.88x0.88)	4-TDFN (1.2x1.6)	4-DSBGA	4-DSBGA	4-DSBGA
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Packaging Format	Tape & Reel	Tape & Reel	Tape & Reel	Cut Tape	Cut Tape
Inventory Status	659 Pcs	2535 Pcs	176600 Pcs	5517 Pcs	38900 Pcs

Engineering Selection Recommendations

For Direct Replacement (Recommended Primary Path): MIC94310-MYMT-TR is the preferred substitute. This part maintains identical electrical specifications, series designation, and compliance certifications as the obsolete MIC94310-MYCS-TR. The only functional difference is the package format change from 4-WLCSP to 4-TDFN, which requires PCB layout modification but provides superior inventory availability (2535 units vs. 659 units) and active product status ensuring long-term supply continuity.

For Alternative Sourcing: Texas Instruments TPS22914 and TPS22915 series variants provide functional alternatives with active product status and significantly higher inventory levels. These parts operate as power switches rather than linear regulators, requiring circuit topology changes. Selection among TPS22914BYFPR, TPS22914CYFPR, TPS22915BYFPR, TPS22915BYFPT, TPS22915CYFPR, and TPS22915CYFPT variants depends on packaging format requirements (Tape & Reel vs. Cut Tape) and load discharge feature necessity. All variants maintain ROHS3 compliance and MSL 1 rating.

Compliance Considerations: All substitute parts maintain ROHS3 compliance, MSL 1 rating, and EAR99 export classification matching the original part. Operating temperature range differs for Texas Instruments alternatives (-40°C ~ 85°C vs. -40°C ~ 125°C), which may impact applications requiring extended high-temperature operation.

Frequently Asked Questions (FAQ)

Q: Can MIC94310-MYMT-TR be used as a direct drop-in replacement for MIC94310-MYCS-TR? A: Electrically yes, but physically no. The MIC94310-MYMT-TR provides identical voltage regulation specifications and protection features. However, the package changes from 4-WLCSP (0.88x0.88mm) to 4-TDFN (1.2x1.6mm), requiring PCB redesign and re-qualification of the assembly process.

Q: What are the key differences between Microchip MIC94310 and Texas Instruments TPS22914/TPS22915 alternatives? A: The MIC94310 series are linear voltage regulators providing fixed 2.8V output. The TPS22914/TPS22915 series are power switches with N-channel output configuration and 2A capability. These represent different circuit topologies and require different application circuits. TPS22915 variants include load discharge functionality not present in TPS22914 variants.

Q: Are all substitute parts RoHS3 compliant? A: Yes. MIC94310-MYMT-TR, all TPS22914 variants, and all TPS22915 variants are ROHS3 compliant with MSL 1 rating, matching the original part's compliance profile.

Q: Which substitute part has the highest inventory availability? A: TPS22915CYFPT from Texas Instruments has the highest inventory at 408,960 units. For Microchip alternatives, MIC94310-MYMT-TR provides 2,535 units.

Q: Does operating temperature range affect substitute selection? A: Yes. The original MIC94310-MYCS-TR and its direct equivalent MIC94310-MYMT-TR operate from -40°C to 125°C. Texas Instruments alternatives (TPS22914 and TPS22915 series) operate from -40°C to 85°C. Applications requiring operation above 85°C must use the Microchip alternatives.

Q: What packaging formats are available for substitute parts? A: MIC94310-MYMT-TR uses 4-TDFN (1.2x1.6mm). All TPS22914 and TPS22915 variants use 4-DSBGA packaging. Packaging selection depends on PCB layout constraints and assembly equipment capabilities.

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