LM2575HVS-ADJ Buck Switching Regulator IC

Part Overview

The LM2575HVS-ADJ is a buck switching regulator IC from Texas Instruments' SIMPLE SWITCHER® series, designed for positive adjustable step-down voltage regulation. This component delivers 1A output current with an adjustable output voltage range from 1.23V to 57V, supporting input voltages from 4V to 60V. The device operates at a fixed switching frequency of 52kHz and is housed in a TO-263-6 (D2PAK) surface mount package.

The main part number LM2575HVS-ADJ carries a Last Time Buy product status, indicating discontinued production. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for new production runs and long-term support.

Substiute Parts

LM2575HVS-ADJ

Texas InstrumentsIn Stock: 985414LM2575HVS-ADJ Datasheet

Current PartRFQ

LM2575HVS-ADJ/NOPB

Texas InstrumentsIn Stock: 4499LM2575HVS-ADJ/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM2575HVS-ADJ is determined by strict equivalence across the following critical parameters:

• Functional topology: Buck (step-down) switching regulator
• Output configuration: Positive adjustable voltage
• Input voltage range: 4V to 60V
• Output voltage range: 1.23V to 57V
• Output current capability: 1A
• Switching frequency: 52kHz
• Package type: TO-263-6 (D2PAK with 5 leads plus tab)
• Thermal operating range: -40°C to 125°C
• Synchronous rectifier capability: Not required (non-synchronous)

The substitute part LM2575HVS-ADJ/NOPB maintains identical electrical specifications and mechanical compatibility. The primary distinction is product status: the main part number is Last Time Buy, while the substitute carries Active status, ensuring continued availability and supply chain support.

Parameter Comparison

Engineering Selection Recommendations

The LM2575HVS-ADJ/NOPB is the direct equivalent substitute for the LM2575HVS-ADJ. Both parts are manufactured by Texas Instruments and share identical electrical and mechanical specifications. The /NOPB suffix indicates lead-free plating and compliance with RoHS3 standards, consistent with the main part number.

The primary advantage of selecting LM2575HVS-ADJ/NOPB is its Active product status. This ensures ongoing manufacturing support, availability through authorized distributors, and compliance with current supply chain requirements. The Last Time Buy status of the original part number indicates limited remaining inventory and no future production.

Both parts maintain equivalent performance across all specified parameters: input voltage range (4V to 60V), adjustable output voltage (1.23V to 57V), 1A output current, 52kHz switching frequency, and TO-263-6 package compatibility. Thermal and environmental specifications are identical, supporting operation across the full -40°C to 125°C temperature range.

Frequently Asked Questions (FAQ)

Q: Can LM2575HVS-ADJ/NOPB be used as a direct replacement for LM2575HVS-ADJ?

A: Yes. Both parts are electrically and mechanically identical. The /NOPB designation indicates lead-free plating and RoHS3 compliance. No circuit modifications or PCB layout changes are required for substitution.

Q: What does the Last Time Buy status mean for the original part number?

A: Last Time Buy indicates that Texas Instruments has discontinued production of LM2575HVS-ADJ. Existing inventory is limited and will not be replenished. New designs and production runs should transition to LM2575HVS-ADJ/NOPB to ensure long-term supply availability.

Q: Are the pin configurations identical between these two part numbers?

A: Yes. Both parts use the TO-263-6 (D2PAK) package with 5 leads plus a thermal tab. Pin assignments, spacing, and PCB footprints are identical. Existing designs require no modification.

Q: Do both parts support the same input and output voltage ranges?

A: Yes. Both the LM2575HVS-ADJ and LM2575HVS-ADJ/NOPB support input voltages from 4V to 60V and adjustable output voltages from 1.23V to 57V. Output current capability is 1A for both variants.

Q: What is the significance of the /NOPB suffix?

A: The /NOPB suffix indicates lead-free plating (no lead on the leads) and RoHS3 compliance. This is the current manufacturing standard for Texas Instruments components and reflects environmental and regulatory compliance requirements.

Q: Are there any thermal or operating temperature differences?

A: No. Both parts operate across the identical temperature range of -40°C to 125°C (junction temperature). Thermal characteristics and performance are equivalent.

Q: Can I mix inventory of both part numbers in production?

A: Yes. Since both parts are electrically and mechanically identical, they can be used interchangeably in the same design without any functional impact or performance variation.