{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2937IMPX-15/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM2937IMPX-15-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM2937IMPX-15-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM2937IMPX-15%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM2937IMPX-15/NOPB, fixed 15 V output LDO, 400 mA, 1 V dropout at 50 mA, SOT-223-4 surface-mount package, -40°C to 85°C operating range.","salesMarkdown":"## What this 15 V LDO covers and where it falls short The LM2937IMPX-15/NOPB is a fixed 15 V output LDO from Texas Instruments, delivering up to 400 mA continuous current. The 1 V maximum dropout at 50 mA means the input rail must stay above 16 V to maintain regulation — a common oversight when designers assume a lower dropout from the typical curve. ## Dropout, quiescent current, and protection trade-offs At 400 mA output, the dropout voltage rises above the 1 V figure specified at 50 mA — budget at least 1.5 V headroom for the full load. The 2 mA quiescent current is moderate; it adds 2 mW to the thermal budget at 15 V output, negligible for most designs. Protection against over-temperature, reverse polarity, and short circuit is built in, saving the cost of external clamp diodes or crowbar circuits. For high-volume or long-term programs, confirm the lead time with your sourcing desk — standard LDOs in this package rarely see allocation, but the 15 V fixed variant has a narrower demand base than adjustable versions.","metaTitle":"LM2937IMPX-15/NOPB TI 15V 400mA LDO Regulator SOT-223-4","metaDescription":"Texas Instruments LM2937IMPX-15/NOPB fixed 15V output LDO, 400mA, 1V dropout at 50mA, -40°C to 85°C, SOT-223-4. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","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)":"15V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.2600","priceTiers":[{"qty":1,"price":"$2.26000","currency":"USD"},{"qty":10,"price":"$2.03400","currency":"USD"},{"qty":25,"price":"$1.91840","currency":"USD"},{"qty":100,"price":"$1.63460","currency":"USD"},{"qty":250,"price":"$1.53488","currency":"USD"},{"qty":500,"price":"$1.34302","currency":"USD"},{"qty":1000,"price":"$1.11279","currency":"USD"},{"qty":2000,"price":"$1.08600","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/fa0d88b5b31623656f74345e6f33b73f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM2937IMPX-15%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"What input voltage range is recommended for the LM2937IMPX-15/NOPB?","answer":"The maximum input voltage is 26 V. For reliable regulation at full 400 mA load, the input should stay above 16.5 V to account for the 1 V dropout at 50 mA plus margin. Below that, the output may drop out of regulation. The part is not designed for input voltages below 16 V at full load."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM2937IMPX-15-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-15-NOPB 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}}