{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2937IMPX-12/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM2937IMPX-12-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM2937IMPX-12-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM2937IMPX-12%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM2937IMPX-12/NOPB, 12V fixed output LDO voltage regulator, 400mA, 1V max dropout at 50mA, SOT-223-4 surface mount, -40°C to 85°C.","salesMarkdown":"## 12V fixed output for powering analog and logic rails The Texas Instruments LM2937IMPX-12/NOPB is a fixed-output positive LDO voltage regulator delivering 12 V at up to 400 mA. It is suited for supplying analog front-ends, sensor interfaces, or logic-level rails in industrial control and telecom equipment where a clean 12 V bus is needed from an input as high as 26 V. ## Dropout voltage and headroom budget The maximum dropout voltage is 1 V at 50 mA output. For a 12 V output, the input must stay above 13 V to maintain regulation at light loads; at full 400 mA output the dropout will be higher, so budget at least 14 V input to cover worst-case conditions across temperature. ## Protection features reduce external circuitry Built-in over-temperature, reverse polarity, and short-circuit protection allow the regulator to survive a faulted output or a reversed supply without external clamping diodes or crowbars. This simplifies the BOM and improves reliability in automotive and industrial environments where supply transients are common.","metaTitle":"Texas Instruments LM2937IMPX-12/NOPB 12V Fixed LDO Regulator","metaDescription":"Texas Instruments LM2937IMPX-12/NOPB 12V fixed output LDO, 400mA, 1V max dropout at 50mA, SOT-223-4.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","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":"Active","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)":"12V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.2600","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/fa0d88b5b31623656f74345e6f33b73f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM2937IMPX-12%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"Is LM2937IMPX-12/NOPB obsolete?","answer":"No, the product status is active."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM2937IMPX-12-NOPB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM2937IMPX-12-NOPB 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}}