NCP623DM-50R2G Linear Voltage Regulator - Equivalent & Substitute Parts

Part Overview

The NCP623DM-50R2G is a linear voltage regulator IC manufactured by onsemi, designed to provide a fixed 5V output at 150mA. This device features an 8-MSOP package and includes enable control and protection against over-temperature and short-circuit conditions. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

NCP623DM-50R2G

onsemiIn Stock: 2247NCP623DM-50R2G Datasheet

Current PartRFQ

LP2986IMM-5.0/NOPB

Texas InstrumentsIn Stock: 29490LP2986IMM-5.0/NOPB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the NCP623DM-50R2G is determined by the following critical parameters:

• Fixed output voltage of 5V
• Surface mount 8-pin package (8-MSOP or equivalent 8-pin configuration)
• Enable control functionality
• Over-temperature and short-circuit protection
• Operating temperature range compatibility
• Output current capability equal to or greater than 150mA
• Maximum input voltage rating of 12V or higher
• Dropout voltage performance suitable for the application

The LP2986IMM-5.0/NOPB from Texas Instruments meets these substitution criteria. This part maintains the same fixed 5V output, operates in an 8-pin surface mount package, includes enable control and comprehensive protection features, and exceeds the current handling capability of the original part.

Parameter Comparison

Engineering Selection Recommendations

The LP2986IMM-5.0/NOPB is a direct functional substitute for the NCP623DM-50R2G. Key advantages of this substitution include:

• Active product status ensures long-term availability and supply chain stability
• Higher output current rating (200mA vs. 150mA) provides design margin
• Extended maximum input voltage rating (16V vs. 12V) accommodates broader input supply ranges
• Lower quiescent current (120 µA vs. 200 µA) reduces standby power consumption
• Enhanced protection with over-current detection in addition to over-temperature and short-circuit protection
• Extended operating temperature range (-40°C ~ 125°C vs. -40°C ~ 85°C) supports wider environmental applications
• RoHS3 compliance ensures regulatory alignment with current standards

The 8-pin surface mount package footprint remains compatible, though the specific package variant changes from 8-MSOP to 8-VSSOP. PCB layout verification is required to confirm mechanical compatibility with existing designs.

Frequently Asked Questions (FAQ)

Q: Can the LP2986IMM-5.0/NOPB directly replace the NCP623DM-50R2G without PCB modifications?

A: The LP2986IMM-5.0/NOPB uses an 8-VSSOP package while the original uses 8-MSOP. Both are 8-pin surface mount packages with 0.118" width, but pin spacing and thermal pad configuration may differ. PCB layout review is necessary to confirm mechanical and electrical compatibility before implementation.

Q: What is the impact of the different dropout voltage specifications?

A: The LP2986IMM-5.0/NOPB has a maximum dropout voltage of 0.35V @ 200mA compared to 0.26V @ 150mA for the NCP623DM-50R2G. At the original design current of 150mA, the LP2986 dropout performance will be better than specified, making it suitable for applications with similar input voltage margins.

Q: Does the higher output current rating of the LP2986IMM-5.0/NOPB affect circuit design?

A: The 200mA output capability of the LP2986IMM-5.0/NOPB exceeds the 150mA requirement of the original design. This provides additional design margin and allows for future load expansion without component replacement. No circuit modifications are required.

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

A: The LP2986IMM-5.0/NOPB is RoHS3 compliant and carries active product status. The NCP623DM-50R2G is obsolete. Both parts are REACH unaffected and carry EAR99 ECCN classification. The substitute part's active status ensures continued availability and support.

Q: How does the extended temperature range of the LP2986IMM-5.0/NOPB affect suitability?

A: The LP2986IMM-5.0/NOPB operates from -40°C to 125°C, compared to -40°C to 85°C for the original part. This extended range provides compatibility with a broader range of environmental conditions and industrial applications without performance degradation.