MIC94355-GYCS-TR Equivalent & Substitute Parts

Part Overview

The MIC94355-GYCS-TR is a linear voltage regulator IC from Microchip Technology's Ripple Blocker™ series, designed to deliver a fixed 1.8V output at 500mA with a maximum dropout voltage of 0.2V. The device is packaged in a 6-WLCSP (0.84x1.32mm) configuration and includes integrated over-current and over-temperature protection with an enable control feature.

The MIC94355-GYCS-TR is classified as obsolete. Identifying equivalent substitute parts is essential for design continuity, procurement planning, and ensuring long-term product availability in applications where this regulator is currently deployed.

Substiute Parts

MIC94355-GYCS-TR

Microchip TechnologyIn Stock: 991MIC94355-GYCS-TR Datasheet

Current PartRFQ

MIC94355-GYMT-TR

Microchip TechnologyIn Stock: 3702MIC94355-GYMT-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MIC94355-GYCS-TR is determined by electrical and mechanical parameter equivalence within the Microchip Ripple Blocker™ product line. The critical parameters governing substitutability are:

• Fixed output voltage of 1.8V
• Output current capability of 500mA
• Maximum input voltage of 3.6V
• Dropout voltage specification of 0.2V @ 500mA
• Quiescent current of 250 µA
• Identical protection and control features (Over Current, Over Temperature, Enable)
• Operating temperature range of -40°C ~ 125°C
• Compliance certifications (ROHS3, REACH Unaffected, EAR99)

The MIC94355-GYMT-TR qualifies as a direct substitute based on identical electrical specifications. The primary difference is the package configuration: the substitute uses a 6-TDFN (1.6x1.6mm) package instead of the 6-WLCSP format, and carries an Active product status with higher inventory availability.

Parameter Comparison

Engineering Selection Recommendations

The MIC94355-GYMT-TR is the qualified substitute for the obsolete MIC94355-GYCS-TR. Both devices maintain identical electrical performance specifications and comply with the same regulatory standards (ROHS3, REACH Unaffected, EAR99).

The primary consideration for selection is package compatibility. The substitute employs a 6-TDFN package (1.6x1.6mm) compared to the original 6-WLCSP format (0.84x1.32mm). PCB layout modifications are required to accommodate the larger footprint of the TDFN package. The MIC94355-GYMT-TR offers the advantage of Active product status and significantly higher inventory availability (3637 units versus 890 units), supporting long-term supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the MIC94355-GYMT-TR be used as a direct replacement for the MIC94355-GYCS-TR?

A: Electrically, yes. The MIC94355-GYMT-TR provides identical voltage regulation performance, output current capability, and protection features. However, the package change from 6-WLCSP to 6-TDFN requires PCB layout redesign. The TDFN package is larger (1.6x1.6mm versus 0.84x1.32mm), necessitating footprint modifications.

Q: What are the key electrical parameters that define substitutability?

A: Substitutability is determined by: fixed 1.8V output voltage, 500mA output current, 3.6V maximum input voltage, 0.2V dropout voltage at 500mA, 250 µA quiescent current, identical PSRR performance, and matching protection/control features. All these parameters are identical between the main part and substitute.

Q: Why is the MIC94355-GYCS-TR classified as obsolete?

A: The MIC94355-GYCS-TR is listed as obsolete by Microchip Technology. The MIC94355-GYMT-TR carries Active status, indicating ongoing production and support.

Q: Are there compliance or certification differences between these parts?

A: No. Both devices are ROHS3 compliant, REACH unaffected, and classified under EAR99. Moisture sensitivity level is identical at MSL 1 (Unlimited).

Q: What is the primary design consideration when switching to the substitute?

A: Package footprint compatibility is the primary consideration. The 6-TDFN package requires a larger PCB area than the 6-WLCSP. Thermal performance and PCB routing may also differ due to the package geometry change.