MIC94345-GYCS TR Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The MIC94345-GYCS TR is a linear voltage regulator IC from Microchip Technology's Ripple Blocker™ series, designed for positive fixed 1.8V output at 500mA in a 6-WLCSP (0.84x1.32) package. This component is classified as obsolete product status. Due to its obsolete designation, identifying equivalent and substitute parts is essential for ongoing design support, production continuity, and system maintenance where this regulator is currently deployed.

Substiute Parts

MIC94345-GYCS TR

Microchip TechnologyIn Stock: 850MIC94345-GYCS TR Datasheet

Current PartRFQ

MIC94345-GYMT-TR

Microchip TechnologyIn Stock: 3344MIC94345-GYMT-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MIC94345-GYCS TR is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Output voltage: 1.8V fixed
• Output current capability: 500mA
• Input voltage maximum: 3.6V
• Voltage dropout: 0.2V @ 500mA
• Quiescent current: 250 µA
• PSRR performance: 85dB ~ 50dB (100Hz ~ 5MHz)
• Protection features: Over Current and Over Temperature
• Control features: Enable function
• Operating temperature range: -40°C ~ 125°C

Mechanical Compatibility Criteria:

• Mounting type: Surface Mount
• Base product number: MIC94345
• Manufacturer: Microchip Technology
• Series: Ripple Blocker™
• Compliance: ROHS3, REACH Unaffected, MSL 1

The MIC94345-GYMT-TR qualifies as a direct substitute based on identical electrical specifications and compliance certifications. The primary difference is the package format change from 6-WLCSP to 6-TDFN, which represents a mechanical substitution suitable for applications where package footprint flexibility is available.

Parameter Comparison

Engineering Selection Recommendations

The MIC94345-GYMT-TR is the manufacturer-recommended substitute for the obsolete MIC94345-GYCS TR. Both parts maintain identical electrical performance specifications and comply with ROHS3 and REACH requirements. The transition from obsolete to active product status makes the MIC94345-GYMT-TR the appropriate choice for new production and ongoing system support.

The primary consideration for selection is the package format transition from 6-WLCSP to 6-TDFN. This change requires PCB layout modification to accommodate the different footprint dimensions (0.84x1.32mm versus 1.6x1.6mm). The 6-TDFN package provides an exposed pad configuration, which may offer improved thermal performance in certain applications.

Both parts carry identical compliance certifications and moisture sensitivity ratings, ensuring no additional handling or storage requirements are introduced through substitution.

Frequently Asked Questions (FAQ)

Q: Can the MIC94345-GYMT-TR directly replace the MIC94345-GYCS TR without circuit modifications?

A: Electrical substitution is direct. The MIC94345-GYMT-TR provides identical voltage output, current capability, dropout voltage, quiescent current, and protection features. However, PCB layout modification is required due to the package format change from 6-WLCSP to 6-TDFN. Pin-to-pin electrical compatibility exists, but physical footprint differs.

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

A: The MIC94345-GYCS TR uses a 6-WLCSP package (0.84x1.32mm), while the MIC94345-GYMT-TR uses a 6-TDFN package (1.6x1.6mm). All electrical specifications, performance parameters, and compliance certifications remain identical.

Q: Why is the MIC94345-GYCS TR listed as obsolete?

A: Product status reflects Microchip Technology's manufacturing and support decisions. The MIC94345-GYMT-TR is the active equivalent, providing the same functionality in an alternative package format.

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

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings. No additional compliance considerations apply to substitution.

Q: What inventory considerations apply to these parts?

A: The MIC94345-GYCS TR has 783 pieces in stock as new original inventory. The MIC94345-GYMT-TR has 3330 pieces in stock as new original inventory. The substitute part offers significantly higher availability.