LM2575T-ADJ Equivalent & Substitute Parts

Part Overview

The LM2575T-ADJ is a buck switching regulator IC from onsemi designed for step-down voltage conversion with positive adjustable output. It delivers 1A output current across an input voltage range of 4.75V to 40V, with adjustable output voltage from 1.23V to 37V. The device operates at a fixed switching frequency of 52kHz and is housed in a TO-220-5 through-hole package.

The LM2575T-ADJ is classified as obsolete. Locating direct replacements becomes necessary for new designs, production restocking, or system maintenance where this component is specified.

Substiute Parts

LM2575T-ADJ

onsemiIn Stock: 1232LM2575T-ADJ Datasheet

Current PartRFQ

LM2575T-ADJG

onsemiIn Stock: 5000346LM2575T-ADJG Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM2575T-ADJ is determined by equivalence across the following critical parameters:

• Function and topology (step-down buck converter)
• Output configuration (positive adjustable)
• Electrical specifications (input voltage range 4.75V–40V, output voltage 1.23V–37V, 1A output current)
• Switching frequency (52kHz)
• Operating temperature range (-40°C ~ 125°C)
• Package type (TO-220-5 through-hole)

The LM2575T-ADJG meets all these criteria and is therefore a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The LM2575T-ADJG is the direct substitute for the LM2575T-ADJ. Both devices are manufactured by onsemi and share identical electrical and mechanical specifications across all functional parameters.

The LM2575T-ADJG offers two distinct advantages:

• Product Status: The LM2575T-ADJG maintains active production status, ensuring long-term availability and supply chain reliability compared to the obsolete LM2575T-ADJ.
• Regulatory Compliance: The LM2575T-ADJG is ROHS3 compliant, meeting current environmental and regulatory requirements, whereas the LM2575T-ADJ is RoHS non-compliant.

For new designs or production restocking, the LM2575T-ADJG is the appropriate selection. For legacy system maintenance where the original LM2575T-ADJ is specified, the LM2575T-ADJG provides full functional compatibility with improved compliance status.

Frequently Asked Questions (FAQ)

Q: Can the LM2575T-ADJG replace the LM2575T-ADJ in existing designs?

A: Yes. The LM2575T-ADJG is electrically and mechanically identical to the LM2575T-ADJ across all specified parameters. Pin configuration, voltage ratings, current capacity, switching frequency, and operating temperature range are equivalent. Direct substitution is possible without circuit modification.

Q: What is the difference between LM2575T-ADJ and LM2575T-ADJG?

A: The primary differences are product status and regulatory compliance. The LM2575T-ADJ is obsolete and RoHS non-compliant. The LM2575T-ADJG is in active production and ROHS3 compliant. Electrical and mechanical specifications are identical.

Q: Why is the LM2575T-ADJ obsolete?

A: The LM2575T-ADJ has been discontinued by onsemi. The LM2575T-ADJG represents the current production equivalent and is recommended for all new applications.

Q: Are there any package or mounting differences?

A: Both devices use the TO-220-5 through-hole package. The LM2575T-ADJG is supplied in tube packaging, while the LM2575T-ADJ packaging specification is not provided. Both are through-hole mounted components with identical footprints.

Q: What output voltage range does this regulator support?

A: The adjustable output voltage range is 1.23V to 37V for both the LM2575T-ADJ and LM2575T-ADJG, determined by external resistor divider configuration.

Q: Is the LM2575T-ADJG suitable for new designs?

A: Yes. The LM2575T-ADJG is in active production status with ROHS3 compliance, making it the appropriate choice for new designs requiring a 1A adjustable buck regulator in the TO-220-5 package.