LM2575D2T-15R4 Equivalent & Substitute Parts

Part Overview

The LM2575D2T-15R4 is a buck switching regulator IC manufactured by onsemi, designed for step-down voltage conversion with a fixed 15V output and 1A output current capability. This device operates across an input voltage range of 4.75V to 40V and features a 52kHz switching frequency in a surface-mount D2PAK-5 package.

The LM2575D2T-15R4 is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for applications utilizing this power management topology.

Substiute Parts

LM2575D2T-15R4

onsemiIn Stock: 2083LM2575D2T-15R4 Datasheet

Current PartRFQ

LM2575D2T-15R4G

onsemiIn Stock: 12493LM2575D2T-15R4G Datasheet

DirectRFQ

TL2575HV-15IKTTR

Texas InstrumentsIn Stock: 1402TL2575HV-15IKTTR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM2575D2T-15R4 are identified based on strict electrical and mechanical parameter alignment:

Direct Substitutes maintain identical specifications across all critical parameters: step-down topology, 15V fixed output, 1A output current, 4.75V to 40V input range, 52kHz switching frequency, -40°C to 125°C operating temperature, and D2PAK-5 package configuration.

Similar Substitutes share the same functional topology, output voltage, output current, switching frequency, operating temperature range, and package type, but may exhibit variations in maximum input voltage rating or other secondary parameters. These parts are electrically compatible for the specified application but require verification of the specific parameter differences.

The key parameters determining substitution eligibility are: output voltage (15V fixed), output current (1A), input voltage range compatibility, switching frequency (52kHz), operating temperature range (-40°C to 125°C), and physical package (D2PAK-5).

Parameter Comparison

Engineering Selection Recommendations

LM2575D2T-15R4G (onsemi) is the primary direct substitute. This part is manufactured by the same supplier as the original component and maintains identical electrical and mechanical specifications. The LM2575D2T-15R4G carries Active product status, ensuring ongoing availability and support. It is ROHS3 compliant and available in Tape & Reel packaging, making it suitable for high-volume production environments. The MSL rating of 1 (Unlimited) provides favorable moisture handling characteristics.

TL2575HV-15IKTTR (Texas Instruments) is a similar substitute manufactured by an alternative supplier. This part maintains functional equivalence across all critical parameters: 15V fixed output, 1A output current, 52kHz switching frequency, -40°C to 125°C operating temperature, and D2PAK-5 package configuration. The TL2575HV-15IKTTR features an extended maximum input voltage rating of 60V compared to the 40V specification of the original part, providing additional design margin in applications with higher input voltage transients. This part is ROHS3 compliant and Active in product status. The MSL rating of 3 (168 Hours) requires standard moisture control procedures during storage and handling.

Selection between these substitutes should be based on supply chain availability, procurement lead times, and specific application input voltage requirements.

Frequently Asked Questions (FAQ)

Q: Can the LM2575D2T-15R4G be used as a direct replacement for the LM2575D2T-15R4?

A: Yes. The LM2575D2T-15R4G maintains identical electrical specifications and physical package configuration. The primary differences are product status (Active vs. Obsolete), RoHS compliance level, and packaging format (Tape & Reel vs. Bulk). Both parts are functionally equivalent for the specified application.

Q: What is the key difference between the LM2575D2T-15R4G and TL2575HV-15IKTTR?

A: Both parts share identical output voltage (15V), output current (1A), switching frequency (52kHz), operating temperature range (-40°C to 125°C), and package type (D2PAK-5). The TL2575HV-15IKTTR features a maximum input voltage rating of 60V compared to 40V for the onsemi parts, and has an MSL rating of 3 versus MSL 1 for the onsemi substitute.

Q: Are there any package compatibility concerns when substituting these parts?

A: All three parts utilize the TO-263-6 D2PAK (5 Leads + Tab) package configuration. PCB footprints and thermal pad designs are compatible across all substitutes. No layout modifications are required.

Q: What compliance certifications apply to these substitute parts?

A: The LM2575D2T-15R4G and TL2575HV-15IKTTR are both ROHS3 compliant. The original LM2575D2T-15R4 is RoHS non-compliant. All three parts are REACH Unaffected and carry ECCN classification EAR99.

Q: Does the extended input voltage range of the TL2575HV-15IKTTR affect circuit design?

A: The TL2575HV-15IKTTR accepts input voltages up to 60V, compared to 40V for the onsemi parts. This specification difference does not require circuit modifications if your application operates within the 4.75V to 40V range. The extended rating provides additional design margin for applications with higher input voltage transients or future design revisions.