MIC94345-MYCS-TR Equivalent & Substitute Parts

Part Overview

The MIC94345-MYCS-TR is a linear voltage regulator IC from Microchip Technology's Ripple Blocker™ series, designed for positive fixed output regulation at 2.8V with 500mA output current capability. The device is packaged in a 6-WLCSP (0.84x1.32mm) form factor and features integrated over-current and over-temperature protection with enable control functionality.

The MIC94345-MYCS-TR is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this regulator.

Substiute Parts

MIC94345-MYCS-TR

Microchip TechnologyIn Stock: 1194MIC94345-MYCS-TR Datasheet

Current PartRFQ

MIC94345-MYMT-TR

Microchip TechnologyIn Stock: 5687MIC94345-MYMT-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MIC94345-MYCS-TR is determined by strict equivalence across the following critical parameters:

• Output voltage: 2.8V fixed
• Output current capability: 500mA
• Maximum input voltage: 3.6V
• Dropout voltage: 0.2V @ 500mA
• Quiescent current: 250 µA
• PSRR performance: 85dB ~ 50dB (100Hz ~ 5MHz)
• Operating temperature range: -40°C ~ 125°C
• Protection features: Over-current and over-temperature protection
• Control features: Enable functionality
• Regulatory compliance: ROHS3 Compliant, REACH Unaffected

The MIC94345-MYMT-TR qualifies as a direct substitute based on identical electrical specifications and functional characteristics. The primary difference is packaging format: the substitute uses 6-TDFN (1.6x1.6mm) instead of 6-WLCSP (0.84x1.32mm), and carries Active product status with higher inventory availability.

Parameter Comparison

Engineering Selection Recommendations

The MIC94345-MYMT-TR is the qualified substitute for the obsolete MIC94345-MYCS-TR. Both parts maintain identical electrical performance specifications and regulatory compliance status (ROHS3 Compliant, REACH Unaffected).

The primary consideration for selection is package footprint compatibility. The MIC94345-MYCS-TR uses a 6-WLCSP package (0.84x1.32mm), while the MIC94345-MYMT-TR uses a 6-TDFN package (1.6x1.6mm). PCB layout and design constraints must accommodate the larger TDFN footprint if substitution is implemented.

The MIC94345-MYMT-TR carries Active product status with significantly higher inventory availability (5637 pcs vs. 1178 pcs), providing superior supply chain reliability for new designs and ongoing production support.

Frequently Asked Questions (FAQ)

Q: Can the MIC94345-MYMT-TR directly replace the MIC94345-MYCS-TR in existing designs?

A: Electrical substitution is direct and complete. However, PCB layout modification is required due to package format differences. The TDFN package is larger (1.6x1.6mm) than the WLCSP package (0.84x1.32mm), necessitating footprint redesign.

Q: Are the electrical specifications identical between these parts?

A: Yes. Output voltage, output current, input voltage range, dropout voltage, quiescent current, PSRR, operating temperature range, and protection features are identical across both parts.

Q: What is the significance of the product status difference?

A: The MIC94345-MYCS-TR is classified as obsolete, indicating discontinued manufacturing and limited future availability. The MIC94345-MYMT-TR is Active, ensuring ongoing production support and supply chain continuity.

Q: Are there any compliance or certification differences?

A: No. Both parts maintain identical RoHS3 compliance, REACH Unaffected status, and Moisture Sensitivity Level (MSL) ratings.

Q: What packaging format should be selected for new designs?

A: The MIC94345-MYMT-TR (6-TDFN) is recommended for new designs due to Active product status and superior inventory availability. Existing designs using the WLCSP format require PCB layout modification to accommodate the TDFN footprint.