LM2575HVT-15/LF03 Equivalent & Substitute Parts

Part Overview

The LM2575HVT-15/LF03 is a buck switching regulator IC manufactured by Texas Instruments, designed for step-down voltage conversion with a fixed 15V output. This device operates across a wide input voltage range of 4V to 60V and delivers 1A of output current in a TO-220-5 through-hole package. The part is currently in active production status with 1100 units available in inventory.

Substitute parts become necessary when the primary device reaches end-of-life status, inventory constraints occur, or application requirements demand higher output current capacity or different input voltage specifications.

Substiute Parts

LM2575HVT-15/LF03

Texas InstrumentsIn Stock: 1200LM2575HVT-15/LF03 Datasheet

Current PartRFQ

LM2576TV-015G

onsemiIn Stock: 8910LM2576TV-015G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM2575HVT-15/LF03 is determined by the following critical parameters:

• Fixed output voltage of 15V
• TO-220-5 through-hole package compatibility
• Buck topology with positive output configuration
• Operating temperature range of -40°C to 125°C
• Switching frequency of 52kHz
• RoHS3 compliance

The identified substitute part, LM2576TV-015G, maintains compatibility across these core parameters while offering enhanced output current capacity (3A versus 1A). However, this substitute operates under a reduced input voltage range (7V to 40V versus 4V to 60V) and carries an obsolete product status designation.

Parameter Comparison

Engineering Selection Recommendations

The LM2576TV-015G from onsemi is electrically compatible with the LM2575HVT-15/LF03 for applications requiring 15V fixed output with identical package footprint and thermal operating range. The substitute provides increased output current capacity of 3A, accommodating higher load requirements within the same form factor.

Selection of the LM2576TV-015G requires verification that the application input voltage does not exceed 40V, as this represents a constraint relative to the primary part's 60V maximum rating. Both devices maintain ROHS3 compliance and identical switching frequency characteristics, ensuring functional equivalence in buck converter topologies.

The obsolete status of the LM2576TV-015G indicates limited future availability. For new designs or long-term production requirements, the active-status LM2575HVT-15/LF03 remains the preferred selection.

Frequently Asked Questions (FAQ)

Q: Can the LM2576TV-015G directly replace the LM2575HVT-15/LF03 in existing designs?

A: Direct replacement is possible when the application input voltage remains within 7V to 40V. If the design requires operation below 7V or above 40V input voltage, the LM2575HVT-15/LF03 must be retained. The identical TO-220-5 package and 15V fixed output enable pin-for-pin compatibility.

Q: What is the primary difference between these two parts?

A: The LM2576TV-015G provides 3A output current capacity compared to the LM2575HVT-15/LF03's 1A rating. The substitute operates within a narrower input voltage window (7V–40V versus 4V–60V). Both devices share identical switching frequency, package type, and temperature range.

Q: Why is the LM2576TV-015G marked as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. While existing inventory may be available, long-term sourcing cannot be guaranteed. The LM2575HVT-15/LF03 maintains active production status and represents the recommended choice for new designs.

Q: Are there thermal or PCB layout considerations when substituting these parts?

A: Both devices use the TO-220-5 package with identical thermal characteristics and pin configuration. PCB layout modifications are not required for substitution. Thermal management design remains unchanged between the two parts.

Q: Do both parts require identical external component values?

A: The 15V fixed output voltage and 52kHz switching frequency are identical across both devices. External filter and feedback components designed for the LM2575HVT-15/LF03 remain compatible with the LM2576TV-015G without modification.