MP2040DQ-LF-P Equivalent & Substitute Parts

Part Overview

The MP2040DQ-LF-P is a linear voltage regulator IC from Monolithic Power Systems Inc., designed for positive adjustable output applications. This Surface Mount device delivers 3A output current in a compact 10-QFN (3x3) package with integrated enable, power good, over-current, over-temperature, and soft-start protection features.

The MP2040DQ-LF-P carries a "Not For New Designs" product status, making identification of equivalent substitute parts essential for ongoing production support and design continuity.

Substiute Parts

MP2040DQ-LF-P

Monolithic Power Systems Inc.In Stock: 972MP2040DQ-LF-P Datasheet

Current PartRFQ

MP2040DQ-LF-Z

Monolithic Power Systems Inc.In Stock: 1013MP2040DQ-LF-Z Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MP2040DQ-LF-P is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must maintain identical specifications for:

• Output configuration (Positive) and output type (Adjustable)
• Voltage input maximum (5.5V), output minimum (0.9V), and output maximum (3.3V)
• Output current rating (3A)
• Voltage dropout specification (0.15V @ 3A Typ)
• Quiescent current (4.6 mA)
• PSRR performance (40dB at 100kHz)
• Control features (Enable, Power Good)
• Protection features (Over Current, Over Temperature, Soft Start)
• Operating temperature range (-40°C ~ 125°C)
• Package type (10-VFDFN Exposed Pad / 10-QFN 3x3)
• Compliance certifications (ROHS3, REACH Unaffected)

Only parts meeting all these criteria are classified as direct parametric equivalents.

Parameter Comparison

Engineering Selection Recommendations

The MP2040DQ-LF-Z is a direct parametric equivalent to the MP2040DQ-LF-P. Both parts are manufactured by Monolithic Power Systems Inc. and share identical electrical specifications, package configuration, and compliance certifications.

Given the "Not For New Designs" status of both parts, selection between them should be based on inventory availability and supply chain considerations. The MP2040DQ-LF-Z currently maintains higher inventory levels (994 Pcs vs. 936 Pcs), which may provide supply continuity advantages for ongoing production requirements.

Both parts meet ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for current manufacturing standards.

Frequently Asked Questions (FAQ)

Q: Can MP2040DQ-LF-Z replace MP2040DQ-LF-P in existing designs?

A: Yes. The MP2040DQ-LF-Z is a direct parametric equivalent with identical electrical performance, output characteristics, protection features, and package configuration. No circuit modifications are required.

Q: Are there any differences in the package or pinout between these parts?

A: No. Both parts use the 10-VFDFN Exposed Pad package (10-QFN 3x3) with identical pinout and mechanical dimensions.

Q: What is the significance of the "-P" and "-Z" suffixes?

A: These suffixes denote different tape and reel packaging configurations from Monolithic Power Systems Inc. The electrical and functional specifications remain identical.

Q: Are both parts suitable for new production?

A: Both parts carry "Not For New Designs" status. For new designs, consult Monolithic Power Systems Inc. for current-generation alternatives within the MP2040 series or successor product lines.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating.