Texas Instruments LM2575S
LM2575S variants from Texas Instruments
LM2575S Overview
What changes between part numbers, and what to check before you lock the BOM — DC DC Switching Regulators.
LM2575S is a Texas Instruments order-code family — not a single orderable MPN. This page lists 3 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.
Package: TO-263-5 | Operating Supply Voltage: 40V | Output Voltage: 15V | Output Current: 1A | Max Output Current: 1A | Max Input Voltage: 40V | Number of Outputs: 1 | Max Operating Temp: 125°C Other listed variants describe: 5V 1A Step-Down DC/DC Controller, 40V In, 52kHz, SMD; Package: TO-263-6, D²Pak (5 Leads + Tab), TO-263BA | Mounting Type: Surface Mount | Number of Outputs: 1 | Operating Temperature: -40°C ~ 125°C (TJ).
Across listed variants, watch these parameters: packages: TO-263-5, TO-263-6, D²Pak (5 Leads + Tab), TO-263BA.
Suffix examples in this family: 15/NOPB, 5.0, 12. 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: LM2575S-15/NOPB, LM2575S-5.0, LM2575S-12.
Key Features
- Footprint / package: TO-263-5, TO-263-6, D²Pak (5 Leads + Tab), TO-263BALand 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.
- 3 distinct suffix patternsExamples: 15/NOPB, 5.0, 12. Decode suffix meaning in the ordering notes under the variant table.
Target Applications
- DC DC Switching Regulators — 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 3 LM2575S 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 |
|---|---|---|---|---|---|---|---|
| LM2575S-15/NOPB | Package: TO-263-5 | Operating Supply Voltage: 40V | Output Voltage: 15V | Output Current: 1A | Max Output Current: 1A | Max Input Voltage: 40V | Number of Outputs: 1 | Max Operating Temp: 125°C | TO-263-5 | Texas Instruments | Active | Compliant | In Stock | |
| LM2575S-5.0 | 5V 1A Step-Down DC/DC Controller, 40V In, 52kHz, SMD | - | Texas Instruments | Active | Compliant | In Stock | |
| LM2575S-12 | Package: TO-263-6, D²Pak (5 Leads + Tab), TO-263BA | Mounting Type: Surface Mount | Number of Outputs: 1 | Operating Temperature: -40°C ~ 125°C (TJ) | TO-263-6, D²Pak (5 Leads + Tab), TO-263BA | Texas Instruments | Active | Compliant | In Stock |
Ordering Code Differences
How suffixes on LM2575S map to package, grade, and reel options.
LM2575S 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: 15/NOPB, 5.0, 12.
What changes between rows: Package Type. Sort the table by these columns when narrowing from base number to a single MPN.
Full MPN examples: LM2575S-15/NOPB, LM2575S-5.0, LM2575S-12.
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 LM2575S DC DC Switching Regulators
Match the footprint first
Packages here: TO-263-5, TO-263-6, D²Pak (5 Leads + Tab), TO-263BA. Open the land-pattern drawing before you substitute a different suffix.
Electrical headroom
Compare voltage and current columns in the variant table. For LM2575S, 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 "LM2575S" — include the full suffix (e.g. 15/NOPB, 5.0, 12). RFQ with reel/tube preference and required date code.
Technical Specifications
Core parameters for LM2575S product family
Identity
Variant Parameters
Source LM2575S with Octatronics
Request stock confirmation, lead time, date code, and pricing for all 3 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 LM2575S product family.
Related Base Numbers
Related Series
Explore product families linked to this base-number page.