MP2249DN-LF-Z Equivalent & Substitute Parts

Part Overview

The MP2249DN-LF-Z is a buck switching regulator IC manufactured by Monolithic Power Systems Inc., designed for positive adjustable output applications. This device delivers 3A output current with a single adjustable output ranging from 0.6V to 6V, operating from a 2.5V to 6V input supply. The component is housed in an 8-SOIC package with exposed pad and features synchronous rectification at 1MHz switching frequency.

The MP2249DN-LF-Z carries a "Not For New Designs" product status, indicating it has been superseded in the manufacturer's product line. This status necessitates identification of functionally equivalent alternatives for ongoing production requirements and new design implementations.

Substiute Parts

MP2249DN-LF-Z

Monolithic Power Systems Inc.In Stock: 167827MP2249DN-LF-Z Datasheet

Current PartRFQ

PAM2320BECADJR

Diodes IncorporatedIn Stock: 2218PAM2320BECADJR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MP2249DN-LF-Z is determined by the following critical parameters:

• Topology: Buck switching regulator
• Output type: Positive adjustable
• Number of outputs: Single output
• Package: 8-SOIC with exposed pad
• Output current rating: 3A minimum
• Synchronous rectification: Required
• Operating temperature range: -40°C to 85°C minimum
• RoHS compliance: ROHS3 Compliant

The PAM2320BECADJR from Diodes Incorporated meets these substitution criteria. Both devices share identical package geometry, output current capability, operating temperature range, and regulatory compliance status. Functional equivalence is established through matching topology, output configuration, and electrical performance envelope.

Parameter Comparison

Engineering Selection Recommendations

The PAM2320BECADJR is a direct functional equivalent for the MP2249DN-LF-Z in applications requiring a 3A adjustable buck regulator in 8-SOIC packaging. Both devices maintain identical compliance certifications (ROHS3, REACH Unaffected, EAR99 ECCN classification) and support the same operating temperature envelope.

The primary design consideration involves input and output voltage ranges. The MP2249DN-LF-Z accepts input voltages from 2.5V to 6V with output capability to 6V, while the PAM2320BECADJR operates from 2.7V to 5.5V input with maximum 5.5V output. Applications operating at the lower input voltage boundary (below 2.7V) or requiring output voltages above 5.5V require the MP2249DN-LF-Z. Designs within the 2.7V to 5.5V input and output range are compatible with either device.

Switching frequency differs between the two parts: the MP2249DN-LF-Z operates at 1MHz while the PAM2320BECADJR operates at 1.5MHz. This frequency difference affects filter component selection and electromagnetic interference characteristics but does not prevent functional substitution in standard buck regulator applications.

Both devices carry "Not For New Designs" status, indicating neither is recommended for new product development. Consultation with manufacturers regarding current-generation alternatives is advised for new designs.

Frequently Asked Questions (FAQ)

Q: Can the PAM2320BECADJR replace the MP2249DN-LF-Z in all applications?

A: The PAM2320BECADJR is functionally equivalent for applications operating within its specified input voltage range (2.7V to 5.5V) and output voltage range (0.6V to 5.5V). Applications requiring input voltages below 2.7V or output voltages above 5.5V must use the MP2249DN-LF-Z or identify alternative devices with extended voltage specifications.

Q: What is the impact of the different switching frequencies?

A: The MP2249DN-LF-Z operates at 1MHz while the PAM2320BECADJR operates at 1.5MHz. Higher switching frequency reduces filter component size but may increase switching losses and electromagnetic emissions. Filter component values require recalculation when substituting between these devices.

Q: Are the packages physically identical?

A: Both devices use 8-SOIC (0.154", 3.90mm Width) packaging with exposed pad. Pin-to-pin compatibility is maintained, allowing direct PCB footprint reuse without layout modification.

Q: What are the moisture sensitivity differences?

A: The MP2249DN-LF-Z has MSL 2A (4 weeks shelf life), while the PAM2320BECADJR has MSL 3 (168 hours shelf life). The PAM2320BECADJR requires more stringent moisture control during storage and handling.

Q: Are both devices suitable for new designs?

A: Both devices carry "Not For New Designs" product status. For new product development, contact the manufacturers to identify current-generation buck regulator alternatives meeting your specifications.