{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2937ET-15-TI","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM2937ET-15-TI","canonicalUrl":"https://icboms.com/texas-instruments/LM2937ET-15-TI","factsUrl":"https://icboms.com/api/mcp/products/LM2937ET-15-TI","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM2937ET-15-TI, fixed 15 V positive LDO regulator, 500 mA output, through-hole TO-220-3, -40°C to 125°C, over-temperature / reverse polarity / short-circuit protection.","salesMarkdown":"## 15 V fixed rail for industrial and automotive auxiliary supplies The LM2937ET-15-TI is a fixed 15 V output LDO regulator from Texas Instruments, delivering up to 500 mA continuous current. The 15 V rail is useful for powering op-amp front-ends, relay coils, or gate-drive bias circuits that need a clean, regulated supply above the 12 V bus. Output configuration is positive fixed — no external resistor divider needed for voltage setting. The single regulator channel keeps the BOM count low for a dedicated rail. ## Sizing the input-output differential for dropout Maximum dropout is 1 V at 50 mA load. At the full 500 mA rating, expect dropout to rise well above 1 V — the datasheet curve (not reproduced here) shows the trade-off. For a 15 V output, the input must stay above roughly 16 V at light load and higher at full load to maintain regulation. Maximum input voltage is 26 V, giving a 10 V headroom at 16 V input. Dropout is not the limiting factor here; thermal dissipation in the TO-220-3 package will be. At 500 mA and 26 V in, the LDO dissipates over 5 W — a heatsink is mandatory. ## Protection features and temperature grade for harsh environments On-chip protection includes over-temperature shutdown, reverse polarity protection, and short-circuit current limiting. These features let the regulator survive a miswired input or a sustained output short without external clamp diodes or crowbar circuits. The TO-220-3 package with a heatsink can handle the junction temperature at high load.","metaTitle":"LM2937ET-15-TI — Texas Instruments 15 V Fixed LDO, 500 mA","metaDescription":"LM2937ET-15-TI: 15 V fixed output LDO from TI, 500 mA, TO-220-3, -40°C to 125°C. Active production. Over-temp, reverse polarity, short-circuit protection.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","PSRR":"-","Series":"-","Package":"Bulk","Output Type":"Fixed","Mounting Type":"Through Hole","Package / Case":"TO-220-3","Product Status":"Active","lifecycle_stage":"eol_hot","Control Features":"-","Current - Output":"500mA","Protection Features":"Over Temperature, Reverse Polarity, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C~125°C","Voltage - Input (Max)":"26V","Voltage Dropout (Max)":"1V @ 50mA","Current - Supply (Max)":"20 mA","Voltage - Output (Max)":"-","Supplier Device Package":"TO-220-3","Current - Quiescent (Iq)":"2 mA","Voltage - Output (Min/Fixed)":"15V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.3800","priceTiers":[{"qty":217,"price":"$1.38000","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM2937ET-15-TI/alternatives.json"},"ai":{"faq":[{"question":"What package does the LM2937ET-15-TI come in?","answer":"Through-hole TO-220-3 (three-lead). The supplier device package is also TO-220-3. The bulk packaging option is listed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM2937ET-15-TI","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM2937ET-15-TI when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}