LM2575TV-5G Equivalent & Substitute Parts

Part Overview

The LM2575TV-5G is a buck switching regulator IC from onsemi, delivering a fixed 5V output at 1A with input voltage range of 4.75V to 40V. This TO-220-5 through-hole component operates across -40°C to 125°C and features a 52kHz switching frequency. The part is currently obsolete, making equivalent substitutes necessary for new designs and ongoing production support.

Substiute Parts

LM2575TV-5G

onsemiIn Stock: 1181LM2575TV-5G Datasheet

Current PartRFQ

LM2575TV-ADJG

onsemiIn Stock: 3331LM2575TV-ADJG Datasheet

MFR RecommendedRFQ

LM2575HVT-5.0/LF03

Texas InstrumentsIn Stock: 1185LM2575HVT-5.0/LF03 Datasheet

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TL2575HV-05IKV

Texas InstrumentsIn Stock: 1446TL2575HV-05IKV Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM2575TV-5G is determined by the following critical parameters:

• Output Configuration: Fixed 5V output (eliminates adjustable variants for direct replacement)
• Output Current: 1A minimum capability
• Input Voltage Range: Minimum 4.75V, maximum 40V or higher
• Package / Case: TO-220-5 Formed Leads (mechanical and thermal compatibility)
• Switching Frequency: 52kHz (system design integration)
• Operating Temperature Range: -40°C to 125°C (environmental compatibility)
• Topology: Buck switching regulator

Substitutes are grouped into two categories:

Direct Equivalents (Fixed 5V Output): Parts with identical output voltage specification, matching all critical electrical and mechanical parameters.

Functional Alternatives (Adjustable Output): Parts with adjustable output capability that can be configured to 5V, offering broader application flexibility but requiring external resistor network design.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Fixed 5V Output Required):

LM2575HVT-5.0/LF03 (Texas Instruments) and TL2575HV-05IKV (Texas Instruments) are active, production-supported alternatives. Both maintain the fixed 5V output specification and TO-220-5 package. The LM2575HVT-5.0/LF03 supports input voltage down to 4V, while TL2575HV-05IKV maintains the 4.75V minimum. Both support input voltage up to 60V, exceeding the original 40V specification. All parts are ROHS3 compliant and REACH unaffected.

For Adjustable Output Configuration:

LM2575TV-ADJG (onsemi) provides an active alternative with adjustable output (1.23V to 37V). This part requires external resistor network design to achieve 5V output but offers design flexibility for future modifications. It maintains onsemi manufacturing continuity and identical electrical specifications to the main part.

Compliance Basis:

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and identical operating temperature ranges. Selection should prioritize active product status for long-term supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can LM2575TV-ADJG replace LM2575TV-5G directly without circuit modification?

A: No. LM2575TV-ADJG requires external resistor network design to set output voltage to 5V. Direct pin-for-pin substitution will not produce the correct output voltage. Circuit redesign is necessary.

Q: What are the mechanical compatibility requirements for substitution?

A: All substitute parts use TO-220-5 Formed Leads package with identical pinout and thermal characteristics. Through-hole mounting compatibility is maintained across all alternatives.

Q: Does the higher input voltage rating (60V) of Texas Instruments parts affect compatibility?

A: No. Higher maximum input voltage rating does not affect circuit operation within the original 4.75V to 40V specification. The parts remain fully compatible with existing input voltage ranges.

Q: Are there differences in switching frequency between substitutes?

A: No. All substitute parts operate at 52kHz switching frequency, matching the original specification. System design integration remains unchanged.

Q: Why is product status (Active vs. Obsolete) important for selection?

A: Active product status ensures long-term manufacturing support, availability, and supply chain stability. Obsolete parts face discontinuation risk and limited inventory. Active alternatives provide production continuity.

Q: Can I use TL2575HV-05IKV in place of LM2575HVT-5.0/LF03?

A: Yes. Both parts are Texas Instruments fixed 5V buck regulators with identical output specifications, current rating, switching frequency, and TO-220-5 package. The primary difference is minimum input voltage (4V vs. 4.75V). Selection depends on your specific input voltage range requirements.