Texas Instruments LM2575T
LM2575T variants from Texas Instruments
LM2575T Overview
What changes between part numbers, and what to check before you lock the BOM — Microcontrollers.
LM2575T is a Texas Instruments order-code family — not a single orderable MPN. This page lists 11 variants that share the same core device but differ in suffix fields (package, grade, reel/tube, electrical bin, etc.). Pick the exact full part number; substituting within the family without checking the datasheet often causes assembly or spec mismatches.
12V 1A Step-Down DC/DC Regulator, TO-220, 40V In Other listed variants describe: 15V 1A Step-Down DC/DC Regulator, TO-220, 40V In; SIMPLE SWITCHER 1A Step-Down Voltage Regulator 5-TO-220 -40 to 125.
Across listed variants, watch these parameters: packages: TO-220-5 Formed Leads, TO-220-5.
Suffix examples in this family: 12/NOPB, 15, 15/NOPB, 3.3/LF03, 5.0, 5.0/LF03, 5.0/NOPB, ADJ/LF03. The characters after the base number usually encode package, temperature, or performance grade — compare the variant table column-by-column rather than assuming pin-compatible drops-in.
Columns that actually vary on this page: Package Type. If two rows match on MPN prefix but differ there, they are not interchangeable for production.
Example MPNs: LM2575T-12/NOPB, LM2575T-15, LM2575T-15/NOPB, LM2575T-3.3/LF03, LM2575T-5.0, LM2575T-5.0/LF03.
Key Features
- Footprint / package: TO-220-5 Formed Leads, TO-220-5Land pattern and thermal pad differ between these packages — run a quick footprint check before you swap variants.
- Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.
- 11 distinct suffix patternsExamples: 12/NOPB, 15, 15/NOPB, 3.3/LF03, 5.0 (+6 more). Decode suffix meaning in the ordering notes under the variant table.
Target Applications
- Microcontrollers — design-in and field replacement
- BOM scrub where only the base prefix is known but suffix is TBD
- Second-source checks when the original MPN is constrained
Ordering Variants
Compare 11 LM2575T part numbers by package, electrical parameters, lifecycle, and availability. Use RFQ for stock and lead-time confirmation.
| Part Number | Description | Package Type | Manufacturer | Lifecycle | RoHS | Availability | Action |
|---|---|---|---|---|---|---|---|
| LM2575T-12/NOPB | 12V 1A Step-Down DC/DC Regulator, TO-220, 40V In | - | Texas Instruments | Active | Compliant | In Stock | |
| LM2575T-15 | 15V 1A Step-Down DC/DC Regulator, TO-220, 40V In | - | Texas Instruments | Active | Compliant | In Stock | |
| LM2575T-15/NOPB | SIMPLE SWITCHER 1A Step-Down Voltage Regulator 5-TO-220 -40 to 125 | - | Texas Instruments | Active | Compliant | In Stock | |
| LM2575T-3.3/LF03 | SIMPLE SWITCHER 1A Step-Down Voltage Regulator 5-TO-220 | - | Texas Instruments | Active | Compliant | In Stock | |
| LM2575T-5.0 | 1A 5V Step-Down Regulator, 40V In, TO-220, 52kHz | - | Texas Instruments | Active | Compliant | In Stock | |
| LM2575T-5.0/LF03 | SIMPLE SWITCHER 1A Step-Down Voltage Regulator 5-TO-220 | - | Texas Instruments | Active | Compliant | In Stock | |
| LM2575T-5.0/NOPB | 5V 1A Step-Down DC/DC Regulator, TO-220 | - | Texas Instruments | Active | Compliant | In Stock | |
| LM2575T-ADJ/LF03 | 1A Adj Step-Down DC/DC Regulator, 40V In, TO-220 | - | Texas Instruments | Active | Compliant | In Stock | |
| LM2575T-ADJ/NOPB | 1A Adj Step-Down DC/DC Regulator, 4V-40V In, TO-220 | - | Texas Instruments | Active | Compliant | In Stock | |
| LM2575T-12/LF03 | Package: TO-220-5 Formed Leads | Mounting Type: Through Hole | Number of Outputs: 1 | Operating Temperature: -40°C ~ 125°C (TJ) | TO-220-5 Formed Leads | Texas Instruments | Active | Compliant | In Stock | |
| LM2575T-3.3 | Package: TO-220-5 | Mounting Type: Through Hole | Number of Outputs: 1 | Operating Temperature: -40°C ~ 125°C (TJ) | TO-220-5 | Texas Instruments | Active | Compliant | In Stock |
Ordering Code Differences
How suffixes on LM2575T map to package, grade, and reel options.
LM2575T uses a shared prefix; characters after the prefix encode orderable options. Two lines with the same prefix are not drop-in replacements unless the differing columns match your need.
Suffixes seen here: 12/NOPB, 15, 15/NOPB, 3.3/LF03, 5.0, 5.0/LF03, 5.0/NOPB, ADJ/LF03, ADJ/NOPB, 12/LF03 (+1 more).
What changes between rows: Package Type. Sort the table by these columns when narrowing from base number to a single MPN.
Full MPN examples: LM2575T-12/NOPB, LM2575T-15, LM2575T-15/NOPB, LM2575T-3.3/LF03, LM2575T-5.0.
Tip: photograph or copy the reel label — reel diameter, QTY per reel, and moisture sensitivity level (MSL) are often suffix-driven and won't show in the schematic.
How to Choose the Right LM2575T Microcontrollers
Match the footprint first
Packages here: TO-220-5 Formed Leads, TO-220-5. Open the land-pattern drawing before you substitute a different suffix.
Electrical headroom
Compare voltage and current columns in the variant table. For LM2575T, a suffix with lower voltage or current rating will not survive the same circuit without recalculation.
Temp grade letter matters
Commercial (0–70 °C) and industrial (−40–85 °C+) suffixes look similar in the prefix — confirm ambient + self-heating, not just the first page of the datasheet.
Copy the full MPN
Do not BOM only "LM2575T" — include the full suffix (e.g. 12/NOPB, 15, 15/NOPB). RFQ with reel/tube preference and required date code.
Technical Specifications
Core parameters for LM2575T product family
Identity
Variant Parameters
Source LM2575T with Octatronics
Request stock confirmation, lead time, date code, and pricing for all 11 ordering variants from Texas Instruments. Our team supports active, EOL, and hard-to-find component sourcing.
- Original manufacturer parts with traceability options
- BOM upload and multi-line RFQ support
- Package, grade, and compliance verification
Frequently Asked Questions
Common technical questions about the LM2575T product family.