{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2937IMP-5.0","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM2937IMP-5.0","canonicalUrl":"https://icboms.com/texas-instruments/LM2937IMP-5.0","factsUrl":"https://icboms.com/api/mcp/products/LM2937IMP-5.0","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM2937IMP-5.0, 5V fixed output LDO regulator, 400 mA output current, 1 V dropout max at 50 mA, SOT-223-4 package, -40°C to 85°C operating temperature.","salesMarkdown":"## 5V fixed LDO for industrial and automotive auxiliary rails The LM2937IMP-5.0 is a 5V fixed-output low-dropout regulator from Texas Instruments, delivering up to 400 mA from a single positive supply. The 1 V maximum dropout at 50 mA means the input must stay above 6 V to maintain regulation — a typical headroom for 12 V automotive or 24 V industrial auxiliary rails. The SOT-223-4 package (TO-261-4 compatible) fits standard surface-mount assembly flows, with the tab providing a thermal path to the board. Dropout is specified as 1 V maximum at 50 mA load. At full 400 mA output, the actual dropout will be higher — the datasheet curve shows the typical rise. For a design targeting 5 V output with a 5.5 V input rail, this part will drop out of regulation; budget at least 6.5 V input for 400 mA loads, or 6 V for lighter loads. The 2 mA quiescent current (20 mA max supply current) is modest for a 400 mA LDO, keeping the thermal footprint manageable in the SOT-223 package. ## Protection features reduce external clamp circuitry Internal over-temperature shutdown, reverse polarity protection, and short-circuit current limiting are built in. For a 24 V industrial input, reverse polarity protection means a miswired battery won't instantly kill the regulator — the output simply won't come up. Short-circuit protection limits the output current during a fault, reducing the need for a series fuse in many low-power control board designs. This means the manufacturer has announced end-of-life and is accepting final orders within a defined window.","metaTitle":"LM2937IMP-5.0 5V Fixed Output LDO, 400 mA, SOT-223-4","metaDescription":"Texas Instruments LM2937IMP-5.0 5V fixed output LDO, 400 mA, 1 V dropout max at 50 mA, SOT-223-4.","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":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-261-4, TO-261AA","Product Status":"Not For New Designs","lifecycle_stage":"eol_hot","Control Features":"-","Current - Output":"400mA","Base Product Number":"LM2937","Protection Features":"Over Temperature, Reverse Polarity, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C~85°C","Voltage - Input (Max)":"26V","Voltage Dropout (Max)":"1V @ 50mA","Current - Supply (Max)":"20 mA","Voltage - Output (Max)":"-","Supplier Device Package":"SOT-223-4","Current - Quiescent (Iq)":"2 mA","Voltage - Output (Min/Fixed)":"5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.1000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/fde2ea9d87633116f7579b8ea9d1fc83.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM2937IMP-5.0/alternatives.json"},"ai":{"faq":[{"question":"What voltage does LM2937IMP-5.0 output?","answer":"The LM2937IMP-5.0 outputs a fixed 5 V. The output voltage is internally set and requires no external resistor divider."},{"question":"Is LM2937IMP-5.0 compatible with SOT-223 footprint?","answer":"Yes, the supplier device package is SOT-223-4, and the package/case is also listed as TO-261-4 (TO-261AA). The SOT-223 footprint is standard and widely used for medium-power linear regulators."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM2937IMP-5.0","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM2937IMP-5.0 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}}