{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2937ESX-3.3/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM2937ESX-3.3-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM2937ESX-3.3-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM2937ESX-3.3%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM2937ESX-3.3/NOPB, positive fixed-output LDO regulator, 3.3V, 500 mA, max dropout 1V at 50 mA, DDPAK/TO-263-3 surface-mount package, -40°C to 125°C operating temperature.","salesMarkdown":"## 3.3 V fixed LDO with 500 mA output and 1 V dropout ceiling It is designed for applications that need a clean, regulated 3.3 V rail from a higher input voltage — up to 26 V maximum — with a maximum dropout voltage of 1 V at 50 mA load. The fixed output eliminates the need for external resistor dividers, simplifying the BOM. ## Dropout and quiescent current — the headroom and idle budget The dropout voltage is specified at a maximum of 1 V at 50 mA output. That means the input must stay at least 1 V above 3.3 V to maintain regulation at light loads; at full 500 mA the dropout will be higher, so budget a 2 V headroom for the rail design. Quiescent current is 2 mA typical, which keeps the idle draw low for always-on or battery-backed rails. ## Protection suite and temperature grade Built-in over-temperature shutdown, reverse polarity protection, and short-circuit current limiting reduce the need for external protection diodes or foldback circuits. ## Package and mounting — DDPAK footprint for power dissipation Supplied in a TO-263-4 (D²Pak) surface-mount package with three leads plus a tab — the tab is the ground path and the primary heat sink.","metaTitle":"LM2937ESX-3.3/NOPB LDO Regulator, 3.3V Fixed Output, 500 mA","metaDescription":"Texas Instruments LM2937ESX-3.3/NOPB is a 3.3V fixed-output LDO regulator rated for 500 mA with a max dropout of 1V at 50 mA.","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-263-4, D²Pak (3 Leads + Tab), TO-263AA","Product Status":"Active","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":"$2.3500","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/fa0d88b5b31623656f74345e6f33b73f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM2937ESX-3.3%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"What is the output type of LM2937ESX-3.3/NOPB?","answer":"Fixed 3.3 V output — no external resistor divider needed. The output is positive and the part regulates to 3.3 V ± tolerance."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM2937ESX-3.3-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/LM2937ESX-3.3-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}}