MIC94165YCS-TR Equivalent & Substitute Parts

Part Overview

The MIC94165YCS-TR is a Power Switch/Driver IC manufactured by Microchip Technology, designed for high-side P-channel switching applications. This component operates as a 1:1 power switch with a maximum output current of 3A and is housed in a compact 6-WLCSP (1x1.5mm) package. The device is currently in active production status and is widely used in power management circuits requiring controlled load switching with reverse current protection.

Substitute parts become necessary when the MIC94165YCS-TR reaches end-of-life status, experiences supply constraints, or when design requirements necessitate alternative packaging or performance characteristics within the same functional category.

Substiute Parts

MIC94165YCS-TR

Microchip TechnologyIn Stock: 45192MIC94165YCS-TR Datasheet

Current PartRFQ

NCP337FCT2G

onsemiIn Stock: 2466NCP337FCT2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MIC94165YCS-TR is determined by the following critical parameters:

• Output Type: P-Channel High Side configuration
• Number of Outputs: Single output (1:1 ratio)
• Maximum Output Current: 3A minimum
• Voltage - Load Range: Must support 1.7V ~ 5.5V minimum
• Operating Temperature Range: -40°C ~ 125°C (TJ)
• Package Type: 6-WLCSP surface mount
• Interface: On/Off control
• Fault Protection: Reverse current protection capability

The NCP337FCT2G from onsemi meets these core functional requirements and is classified as a direct substitute. However, product status differences and minor parameter variations must be evaluated for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The MIC94165YCS-TR is the primary component choice due to its active production status and full compliance with ROHS3 and REACH requirements. This part is suitable for new designs and ongoing production applications.

The NCP337FCT2G is classified as an obsolete substitute and should only be considered in legacy system maintenance scenarios where existing inventory is available. The obsolete status of the NCP337FCT2G presents supply chain risk and limits its applicability to new product development.

Key differentiation factors between the two parts:

• The MIC94165YCS-TR provides superior on-resistance performance (14.5mOhm vs. 20Ohm), resulting in lower power dissipation and improved thermal efficiency.
• The NCP337FCT2G supports a lower minimum load voltage (1.2V vs. 1.7V), which may be advantageous in ultra-low-voltage applications.
• The NCP337FCT2G includes a load discharge feature not present in the MIC94165YCS-TR.
• Package dimensions differ slightly (1x1.5mm vs. 1.0x1.5mm), which may impact PCB layout considerations in space-constrained designs.

Both parts maintain identical operating temperature ranges, output current ratings, and compliance certifications. Selection between these parts should be based on application-specific voltage requirements, thermal performance needs, and supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can the NCP337FCT2G directly replace the MIC94165YCS-TR in existing designs?

A: Functional compatibility exists for applications operating within the overlapping voltage range (1.7V ~ 5.5V). However, the NCP337FCT2G's obsolete status and higher on-resistance (20Ohm vs. 14.5mOhm) require thermal and power dissipation re-evaluation. The slight package dimension difference (1.0x1.5mm vs. 1x1.5mm) may require PCB layout verification.

Q: What are the critical parameters that determine substitution eligibility?

A: Substitution eligibility is determined by: P-Channel High Side output configuration, single output (1:1 ratio), 3A maximum output current, voltage load range compatibility, -40°C ~ 125°C operating temperature range, 6-WLCSP surface mount package, On/Off interface, and reverse current protection capability.

Q: Why is the MIC94165YCS-TR preferred over the NCP337FCT2G?

A: The MIC94165YCS-TR is in active production status, providing long-term supply chain stability. It also delivers superior on-resistance performance (14.5mOhm), resulting in lower power dissipation and improved thermal efficiency compared to the NCP337FCT2G (20Ohm).

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

A: Both parts are ROHS3 compliant and REACH unaffected. Both maintain MSL Rating 1 (Unlimited) and identical operating temperature ranges (-40°C ~ 125°C TJ). No compliance or certification differences exist between the two parts.

Q: What is the impact of the on-resistance difference on circuit performance?

A: The MIC94165YCS-TR's lower on-resistance (14.5mOhm) results in reduced power dissipation and lower junction temperature rise compared to the NCP337FCT2G (20Ohm). In high-current applications approaching 3A, this difference becomes significant for thermal management and overall circuit efficiency.

Q: Can the NCP337FCT2G be used in applications requiring reverse current protection?

A: The NCP337FCT2G's fault protection specifications are not provided in the available data. The MIC94165YCS-TR explicitly includes reverse current protection. Applications requiring reverse current protection should prioritize the MIC94165YCS-TR or verify NCP337FCT2G reverse current handling capability through detailed device documentation.

Q: What packaging considerations apply when substituting between these parts?

A: Both parts use 6-WLCSP surface mount packages with minor dimension differences (MIC94165YCS-TR: 1x1.5mm; NCP337FCT2G: 1.0x1.5mm). PCB layout and solder reflow profiles should be verified for the specific package variant. The 0.5mm width difference may impact placement in extremely space-constrained designs.