LM2575HVS-12 Equivalent & Substitute Parts

Part Overview

The LM2575HVS-12 is a buck switching regulator IC from Texas Instruments, part of the SIMPLE SWITCHER® series. It delivers a fixed 12V output at 1A from input voltages ranging from 4V to 60V, operating at a switching frequency of 52kHz. The device is housed in a TO-263-6 (D2PAK) surface mount package with 5 leads plus tab.

The LM2575HVS-12 carries a Last Time Buy status, indicating that Texas Instruments has discontinued this part number. Equivalent and substitute parts are necessary to maintain design continuity and ensure long-term component availability for new production runs and field replacements.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Part Number	LM2575HVS-12
Function	Step-Down (Buck)
Output Voltage	12V Fixed
Output Current	1A
Input Voltage Range	4V to 60V
Switching Frequency	52kHz
Package	TO-263-6, D2PAK (5 Leads + Tab)
Operating Temperature	-40°C to 125°C (TJ)
RoHS Status	ROHS3 Compliant
Product Status	Last Time Buy

Substitute Part Grouping Explanation

Substitute parts for the LM2575HVS-12 are grouped based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

Output voltage: 12V fixed
Output current capability: 1A minimum
Package type: TO-263-6 (D2PAK, 5 leads + tab)
Switching frequency: 52kHz
Operating temperature range: -40°C to 125°C
Input voltage range: Minimum 4V, maximum 40V or higher
Topology: Buck (step-down)
Output configuration: Positive

Substitution Categories:

Direct Equivalents (Same Manufacturer, Active Status): Parts with identical electrical specifications and active product status from Texas Instruments or authorized second sources.
Functional Equivalents (Different Manufacturer, Active Status): Parts meeting all electrical and package requirements from alternative manufacturers with active product status.
Higher Current Variants (3A Output): Parts with identical voltage and package specifications but higher current rating (3A), suitable for designs with current margin requirements.
Obsolete Alternatives: Parts meeting all specifications but with obsolete product status, available only from existing inventory.

Parameter Comparison

Part Number	Manufacturer	Output Current	Input Voltage (Min)	Input Voltage (Max)	Package	Product Status	Inventory
LM2575HVS-12	Texas Instruments	1A	4V	60V	TO-263-6 (D2PAK-5)	Last Time Buy	1250 Pcs
LM2575HVS-12/NOPB	Texas Instruments	1A	4V	60V	TO-263-6 (D2PAK-5)	Active	1400 Pcs
LM2575-12WU	Microchip Technology	1A	4V	40V	TO-263-6 (D2PAK-5)	Active	7400 Pcs
LM2575-12WU-TR	Microchip Technology	1A	4V	40V	TO-263-6 (D2PAK-5)	Active	1485 Pcs
LM2575D2T-12R4G	onsemi	1A	4.75V	40V	TO-263-6 (D2PAK-5)	Active	1800 Pcs
LM2576-12WU	Microchip Technology	3A	4V	40V	TO-263-6 (D2PAK-5)	Active	1000400 Pcs
LM2576-12WU-TR	Microchip Technology	3A	4V	40V	TO-263-6 (D2PAK-5)	Active	2450 Pcs
LM2576D2TR4-012G	onsemi	3A	7V	40V	TO-263-6 (D2PAK-5)	Active	3500 Pcs
NCV2575D2T-12R4G	onsemi	1A	4.75V	40V	TO-263-6 (D2PAK-5)	Obsolete	5800 Pcs

Engineering Selection Recommendations

Tier 1 - Recommended Primary Substitutes (Active Status, Full Compatibility):

LM2575HVS-12/NOPB (Texas Instruments) is the direct equivalent with active product status. This part maintains identical electrical specifications and packaging, offering seamless design compatibility with zero circuit modifications required.

LM2575-12WU and LM2575-12WU-TR (Microchip Technology) are functionally equivalent alternatives with active status. Both meet the 1A output current requirement and 12V fixed output specification. The maximum input voltage is 40V, which is lower than the original 60V specification. These parts are suitable for applications where input voltage does not exceed 40V.

LM2575D2T-12R4G (onsemi) meets all electrical requirements with active product status. The minimum input voltage is 4.75V (versus 4V for the original), which is acceptable for most applications. Maximum input voltage is 40V.

Tier 2 - Higher Current Alternatives (3A Output, Active Status):

LM2576-12WU, LM2576-12WU-TR (Microchip Technology), and LM2576D2TR4-012G (onsemi) provide 3A output current capability in the same package. These parts are suitable for designs requiring additional current margin or for applications with higher load requirements. All maintain the 12V fixed output and 52kHz switching frequency. Maximum input voltage is 40V for Microchip parts and 7V minimum for onsemi variant.

Tier 3 - Inventory Availability Consideration:

NCV2575D2T-12R4G (onsemi) carries obsolete product status but maintains full electrical compatibility with 1A output current and 12V fixed output. This part is available from existing inventory only and should be used only when other active alternatives are unavailable.

Compliance and Certification:

All recommended substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the original part's regulatory requirements. Moisture sensitivity levels vary between MSL 1 (unlimited) and MSL 3 (168 hours), which may affect storage and handling procedures.

Frequently Asked Questions (FAQ)

Q: Can I use LM2575-12WU as a direct replacement for LM2575HVS-12?

A: LM2575-12WU is functionally equivalent for applications where input voltage does not exceed 40V. The original LM2575HVS-12 accepts input voltages up to 60V. If your application requires input voltages above 40V, this substitute is not suitable. All other electrical parameters (12V output, 1A current, 52kHz switching frequency, operating temperature range) are identical.

Q: What is the difference between LM2575-12WU and LM2575-12WU-TR?

A: Both parts are electrically identical. The difference is packaging: LM2575-12WU is supplied in Tube packaging, while LM2575-12WU-TR is supplied in Tape & Reel (TR) format. Tape & Reel packaging is typically used for automated assembly processes, while Tube packaging is used for manual handling or lower-volume applications.

Q: Can I use LM2576-12WU instead of LM2575HVS-12?

A: Yes, LM2576-12WU is a suitable substitute. It provides the same 12V fixed output and operates at the same 52kHz switching frequency in the identical TO-263-6 package. The key difference is that LM2576-12WU delivers 3A output current compared to the 1A of the original part. This higher current capability makes it suitable for designs with increased load requirements or for applications requiring additional design margin. The maximum input voltage is 40V.

Q: What does "Last Time Buy" status mean for the LM2575HVS-12?

A: Last Time Buy indicates that Texas Instruments has discontinued this part number and will not manufacture additional units beyond a specified cutoff date. Existing inventory may still be available, but no new production is planned. Designers should transition to active alternatives such as LM2575HVS-12/NOPB or other recommended substitutes.

Q: Are there any input voltage limitations I should consider when selecting a substitute?

A: Yes. The original LM2575HVS-12 accepts input voltages from 4V to 60V. Most substitute parts (LM2575-12WU, LM2575D2T-12R4G, LM2576 variants) have a maximum input voltage of 40V. If your application requires input voltages above 40V, verify that your selected substitute supports this range. LM2575HVS-12/NOPB maintains the full 4V to 60V input range.

Q: What is the difference between D2PAK and TO-263 packaging?

A: D2PAK and TO-263 refer to the same package type. TO-263-6 is the formal designation, while D2PAK is the industry common name. Both describe a surface mount package with 5 leads plus a thermal tab. All recommended substitutes use this identical package, ensuring mechanical and thermal compatibility without PCB redesign.

Q: Can I use NCV2575D2T-12R4G if other parts are unavailable?

A: NCV2575D2T-12R4G meets all electrical specifications (12V output, 1A current, 52kHz frequency, identical package) but carries obsolete product status. It is available only from existing inventory and should be used only when active alternatives are unavailable. Long-term supply cannot be guaranteed.

Q: What is the moisture sensitivity level (MSL), and does it affect my selection?

A: Moisture Sensitivity Level (MSL) indicates how sensitive the component is to moisture during storage and handling. MSL 1 (unlimited) means the part has no moisture sensitivity restrictions. MSL 3 (168 hours) means the part must be used within 168 hours of opening the moisture barrier bag. If your manufacturing process involves extended storage or high-humidity environments, select parts with MSL 1 rating (LM2575D2T-12R4G, LM2576D2TR4-012G, NCV2575D2T-12R4G).

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