MP7721DF-LF-Z Equivalent & Substitute Parts

Part Overview

The MP7721DF-LF-Z is a Class D stereo amplifier IC manufactured by Monolithic Power Systems Inc., designed for 2-channel audio amplification applications. This device is classified as obsolete and no longer in active production. The MP7721DF-LF-Z delivers 10W per channel at 8Ω load impedance with a supply voltage range of 9.5V to 24V, housed in a 20-TSSOP surface mount package with exposed pad.

Due to its obsolete status, locating new original inventory of the MP7721DF-LF-Z presents sourcing challenges. Identifying compatible substitute components ensures design continuity and maintains system functionality for applications currently utilizing this amplifier IC.

Substiute Parts

MP7721DF-LF-Z

Monolithic Power Systems Inc.In Stock: 6612MP7721DF-LF-Z Datasheet

Current PartRFQ

MP7722DF-LF-Z

Monolithic Power Systems Inc.In Stock: 5708MP7722DF-LF-Z Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MP7721DF-LF-Z is determined by the following critical parameters:

Package Compatibility: Both the main part and substitute must utilize the 20-TSSOP (0.173", 4.40mm Width) Exposed Pad package to ensure PCB layout compatibility and pin-to-pin correspondence.

Amplifier Classification: The substitute must be a Class D stereo amplifier IC to maintain the same operational topology and efficiency characteristics.

Channel Configuration: The substitute must provide 2-channel (stereo) output to match the original application requirements.

Mounting Technology: Surface mount technology must be preserved for manufacturing process alignment.

Environmental Specifications: Operating temperature range of -40°C to 85°C (TA) must be maintained for thermal performance consistency.

Regulatory Compliance: ROHS3 compliance and REACH Unaffected status ensure regulatory alignment with the original component.

The MP7722DF-LF-Z qualifies as a direct substitute based on these parameters. While the MP7722DF-LF-Z provides higher output power (20W x 2 @ 4Ω) compared to the MP7721DF-LF-Z (10W x 2 @ 8Ω), both devices share identical package geometry, amplifier topology, channel configuration, mounting technology, and environmental specifications.

Parameter Comparison

Engineering Selection Recommendations

The MP7722DF-LF-Z is the direct substitute for the obsolete MP7721DF-LF-Z. Selection of the MP7722DF-LF-Z is supported by the following factors:

Active Product Status: The MP7722DF-LF-Z maintains active production status with Monolithic Power Systems Inc., ensuring long-term availability and supply chain reliability compared to the obsolete MP7721DF-LF-Z.

Regulatory Compliance Alignment: Both devices maintain ROHS3 compliance and REACH Unaffected status, ensuring compatibility with current environmental and regulatory requirements.

Identical Package Geometry: The 20-TSSOP (0.173", 4.40mm Width) Exposed Pad package is identical between both devices, enabling direct PCB layout compatibility without redesign.

Preserved Amplifier Architecture: Both devices utilize Class D amplification topology with 2-channel stereo configuration, maintaining operational characteristics and system integration requirements.

Environmental Specification Consistency: Operating temperature range of -40°C to 85°C (TA) is identical, ensuring thermal performance alignment across the operating envelope.

Enhanced Performance Capability: The MP7722DF-LF-Z delivers 20W per channel at 4Ω load impedance, providing increased power delivery capability while maintaining backward compatibility with the original application's package and mounting requirements.

Frequently Asked Questions (FAQ)

Q: Can the MP7722DF-LF-Z be used as a direct replacement for the MP7721DF-LF-Z without PCB modifications?

A: Yes. Both devices utilize the identical 20-TSSOP (0.173", 4.40mm Width) Exposed Pad package with surface mount technology. Pin-to-pin compatibility is maintained, allowing direct substitution without PCB layout changes.

Q: What is the primary difference between the MP7721DF-LF-Z and MP7722DF-LF-Z?

A: The primary difference is output power specification. The MP7721DF-LF-Z delivers 10W per channel at 8Ω load impedance, while the MP7722DF-LF-Z delivers 20W per channel at 4Ω load impedance. Both devices share identical package geometry, amplifier topology, and environmental specifications.

Q: Why is the MP7721DF-LF-Z classified as obsolete?

A: The MP7721DF-LF-Z has been discontinued by Monolithic Power Systems Inc. and is no longer in active production. The MP7722DF-LF-Z represents the current active product offering from the manufacturer for stereo Class D amplification in this package category.

Q: Are there any supply voltage considerations when substituting the MP7722DF-LF-Z for the MP7721DF-LF-Z?

A: The MP7721DF-LF-Z specifies a supply voltage range of 9.5V to 24V. The MP7722DF-LF-Z does not provide explicit supply voltage specification in the available documentation. Applications requiring specific voltage range confirmation should reference the MP7722DF-LF-Z datasheet.

Q: Do both devices maintain the same regulatory compliance status?

A: Yes. Both the MP7721DF-LF-Z and MP7722DF-LF-Z are ROHS3 compliant and REACH Unaffected, ensuring alignment with current environmental and regulatory requirements.

Q: What is the moisture sensitivity level of the MP7722DF-LF-Z?

A: The MP7722DF-LF-Z has a Moisture Sensitivity Level (MSL) of 2A (4 Weeks), indicating standard moisture handling requirements for surface mount assembly processes.

Q: Is the MP7722DF-LF-Z available in the same packaging format as the MP7721DF-LF-Z?

A: The MP7722DF-LF-Z is available in Tape & Reel (TR) packaging format. Both devices utilize the 20-TSSOP (0.173", 4.40mm Width) Exposed Pad package type for surface mount applications.