{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2937ES-12","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM2937ES-12","canonicalUrl":"https://icboms.com/texas-instruments/LM2937ES-12","factsUrl":"https://icboms.com/api/mcp/products/LM2937ES-12","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM2937ES-12, fixed 12V output LDO regulator, 500mA output, 1V dropout at 500mA, 26V max input, -40°C to 125°C junction temperature, TO-263-4 D2PAK surface-mount package, tube.","salesMarkdown":"## 12 V fixed output, 500 mA — the rail it feeds The Texas Instruments LM2937ES-12 is a fixed 12 V output LDO regulator rated for 500 mA continuous output. It accepts up to 26 V input and drops 1 V maximum at full load, so the input rail must stay above 13 V to maintain regulation. Intended for powering analog supplies, relay coils, or sensor bias in automotive and industrial equipment where a clean 12 V bus is needed from a higher, unregulated source. The 10 mA quiescent current is modest for a 500 mA part; it adds 120 mW of idle dissipation at 12 V, which the TO-263 tab can sink with a reasonable copper area. ## Protection and package — what keeps it alive Built-in protection includes over-temperature shutdown, short-circuit current limiting, and transient voltage clamping. The mirror-image insertion feature prevents damage if the part is installed backwards. That means TI has announced end-of-life for this specific variant; final production orders have been taken, and remaining stock is what is available through distribution. For new designs, a pin-compatible 12 V LDO from the same or another manufacturer should be qualified.","metaTitle":"LM2937ES-12 12V Fixed 500mA LDO Regulator, TO-263-4 D2PAK","metaDescription":"Texas Instruments LM2937ES-12 fixed 12V output LDO regulator, 500mA, 1V dropout at full load, -40°C to 125°C junction temp, TO-263-4 D2PAK.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Last Buy","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","PSRR":"-","Series":"-","Package":"Tube","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-263-4, D2PAK (3 Leads + Tab), TO-263AA","Product Status":"Last Time Buy","lifecycle_stage":"eol_hot","Control Features":"-","Current - Output":"500mA","Base Product Number":"LM2937","Protection Features":"Mirror-Image Insertion, Over Temperature, Short Circuit, Transient Voltage","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C (TJ)","Voltage - Input (Max)":"26V","Voltage Dropout (Max)":"1V @ 500mA","Current - Supply (Max)":"20 mA","Voltage - Output (Max)":"-","Supplier Device Package":"TO-263 (DDPAK-3)","Current - Quiescent (Iq)":"10 mA","Voltage - Output (Min/Fixed)":"12V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.1900","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/51039af61f3a9196879201ba09696b51.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM2937ES-12/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for LM2937ES-12?","answer":"No official replacement part number is recorded in the lifecycle data. For a pin-compatible alternative, evaluate other fixed 12 V output LDOs in the TO-263-4 package from TI or alternate vendors — confirm pinout and dropout voltage before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM2937ES-12","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM2937ES-12 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}