MP6923GS-Z Equivalent & Substitute Parts

Part Overview

The MP6923GS-Z is a high-efficiency dual fast turn-on power supply controller manufactured by Monolithic Power Systems Inc., designed for secondary-side synchronous rectifier applications. This 14-SOIC surface mount device operates across an 8V to 24V supply voltage range with a maximum supply current of 27 mA and supports operating temperatures from -40°C to 125°C. The device is currently in active product status with 2200 units available in stock. Substitute parts are identified when equivalent functional performance can be achieved within the specified electrical and mechanical parameter constraints of this power management category.

Substiute Parts

MP6923GS-Z

Monolithic Power Systems Inc.In Stock: 2250MP6923GS-Z Datasheet

Current PartRFQ

NCP349MNTBG

onsemiIn Stock: 26224NCP349MNTBG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute part identification for the MP6923GS-Z is based on functional equivalence within the power management controller category. The primary substitution criterion is the ability to perform secondary-side power supply control and synchronous rectifier functions within compatible electrical operating ranges. The NCP349MNTBG from onsemi is identified as a substitute based on its classification as a power supply controller device within the same PMIC category. Substitution logic accounts for voltage supply range compatibility, surface mount packaging capability, and RoHS3 compliance certification. The substitute part must operate within overlapping supply voltage parameters and maintain surface mount form factor suitability for equivalent circuit board integration.

Parameter Comparison

Engineering Selection Recommendations

The MP6923GS-Z maintains active product status with full manufacturer support and 2200 units in current inventory. This part is the primary selection for new designs and ongoing production requiring secondary-side synchronous rectifier control functionality.

The NCP349MNTBG is classified as obsolete and should be considered only when existing designs require component-level compatibility with legacy systems. While both parts carry ROHS3 compliance and EAR99 export classification, the NCP349MNTBG's obsolete status limits its suitability for new applications. The substitute part operates across a wider supply voltage range (1.2V ~ 28V) compared to the main part (8V ~ 24V), but exhibits a reduced maximum operating temperature of 85°C versus 125°C for the MP6923GS-Z. Package form factor differences (14-SOIC versus 6-VFDFN) require circuit board layout modifications if substitution is implemented.

Frequently Asked Questions (FAQ)

Q: Can the NCP349MNTBG directly replace the MP6923GS-Z in new designs?

A: No. The NCP349MNTBG is classified as obsolete and is not recommended for new product development. The MP6923GS-Z is the active part with ongoing manufacturer support.

Q: What are the key electrical differences between these parts?

A: The MP6923GS-Z operates at 8V ~ 24V supply voltage with 27 mA maximum current and supports temperatures to 125°C. The NCP349MNTBG operates at 1.2V ~ 28V supply voltage with 70 µA maximum current and supports temperatures to 85°C. The wider voltage range of the substitute does not compensate for its reduced temperature rating and obsolete status.

Q: Are package changes required if substitution is necessary?

A: Yes. The MP6923GS-Z uses a 14-SOIC package while the NCP349MNTBG uses a 6-VFDFN package. Circuit board layout and routing modifications are required for any substitution attempt.

Q: Do both parts meet current compliance requirements?

A: Both parts are ROHS3 compliant and carry EAR99 export classification. However, the NCP349MNTBG's obsolete status may create supply chain and long-term support concerns.

Q: What is the moisture sensitivity difference between these parts?

A: The MP6923GS-Z carries MSL rating 2 (1 Year), while the NCP349MNTBG carries MSL rating 1 (Unlimited). The substitute part has superior moisture resistance characteristics.