{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2937ESX-3.3","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM2937ESX-3.3","canonicalUrl":"https://icboms.com/texas-instruments/LM2937ESX-3.3","factsUrl":"https://icboms.com/api/mcp/products/LM2937ESX-3.3","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM2937ESX-3.3, fixed-output LDO regulator, 3.3V, 500mA, TO-263-4 (D²Pak), -40°C to 125°C, NRND.","salesMarkdown":"It delivers up to 500 mA continuous output with a maximum dropout voltage of 1V at 50 mA load — enough headroom for 5V-to-3.3V conversion in most automotive and industrial rails. ## Dropout voltage and quiescent current — the headroom trade-off Dropout is specified at 1V maximum at 50 mA output. At full 500 mA load the dropout rises; plan for at least 1.5V input-to-output differential to stay in regulation across temperature. Quiescent current is 2 mA typical — not a micropower LDO, but acceptable for always-on rails where the load current dominates the power budget. ## Protection set — over-temp, reverse polarity, short circuit On-chip protection includes over-temperature shutdown, reverse polarity blocking, and short-circuit current limiting. These reduce the need for external clamp diodes or foldback circuits in ruggedised designs. ## NRND — what it means for new builds and BOM planning No official pin-compatible replacement has been announced; qualify a current-production LDO from the LM2937 family if you need a drop-in alternate.","metaTitle":"LM2937ESX-3.3 LDO Regulator, 3.3V Fixed, 500mA, NRND","metaDescription":"Texas Instruments LM2937ESX-3.3 is a 3.3V fixed-output LDO regulator rated for 500mA, -40°C to 125°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","PSRR":"-","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-263-4, D²Pak (3 Leads + Tab), TO-263AA","Product Status":"Not For New Designs","lifecycle_stage":"eol_hot","Control Features":"-","Current - Output":"500mA","Base Product Number":"LM2937","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)":"1.25 A","Voltage - Output (Max)":"-","Supplier Device Package":"DDPAK/TO-263-3","Current - Quiescent (Iq)":"2 mA","Voltage - Output (Min/Fixed)":"3.3V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.8511","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/fde2ea9d87633116f7579b8ea9d1fc83.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM2937ESX-3.3/alternatives.json"},"ai":{"faq":[{"question":"What is the exact replacement for LM2937ESX-3.3?","answer":"TI has not published a direct pin-compatible replacement for the LM2937ESX-3.3. The base product number LM2937 covers several variants; check the LM2937 family for a current-production fixed 3.3V output in a similar D²Pak package."},{"question":"Can LM2937ESX-3.3 be used as a replacement for LM2937ES-3.3?","answer":"The LM2937ESX-3.3 and LM2937ES-3.3 share the same base product number and electrical specifications. The suffix difference indicates packaging or tape-and-reel variation — verify the package code (D²Pak) and pinout match your board before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM2937ESX-3.3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM2937ESX-3.3 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}}