{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM337KTTR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM337KTTR","canonicalUrl":"https://icboms.com/texas-instruments/LM337KTTR","factsUrl":"https://icboms.com/api/mcp/products/LM337KTTR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM337KTTR, negative adjustable voltage regulator, 1.5 A output, -1.2 V to -37 V output range, 77 dB PSRR at 120 Hz, DDPAK/TO-263-3 surface-mount package, 0°C to 125°C.","salesMarkdown":"## Negative rail regulation with 77 dB line rejection The LM337KTTR is a negative adjustable voltage regulator from Texas Instruments. It delivers up to 1.5 A output current with an adjustable output from -1.2 V down to -37 V. That rejection figure holds at the line-frequency fundamental where bulk-capacitor ESR starts to matter. ## 1.5 A output and thermal budget in DDPAK Rated for 1.5 A continuous output, this part handles moderate-load negative rails — op-amp supplies, small motor drives, or local post-regulation. Input voltage maximum is -40 V, output maximum is -37 V. The minimum dropout is not listed here, but the adjustable range from -1.2 V means the regulator can produce a clean -1.2 V rail from a -3 V or -5 V input — useful for splitting a bipolar supply. Built-in over-temperature and short-circuit protection are standard for this regulator class.","metaTitle":"LM337KTTR Negative Adjustable Regulator, 1.5 A, DDPAK","metaDescription":"LM337KTTR from Texas Instruments: negative adjustable regulator, 1.5 A output, 77 dB PSRR at 120 Hz, -1.2 V to -37 V out, DDPAK/TO-263 package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","PSRR":"77dB (120Hz)","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Adjustable","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":"1.5A","Base Product Number":"LM337","Protection Features":"Over Temperature, Short Circuit","Number of Regulators":"1","Output Configuration":"Negative","Operating Temperature":"0°C~125°C","Voltage - Input (Max)":"-40V","Voltage Dropout (Max)":"-","Voltage - Output (Max)":"-37V","Supplier Device Package":"DDPAK/TO-263-3","Voltage - Output (Min/Fixed)":"-1.2V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.5800","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d1a7551c5508ee482aad7276b423590c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM337KTTR/alternatives.json"},"ai":{"faq":[{"question":"What is the output current capability of LM337KTTR?","answer":"The LM337KTTR is rated for 1.5 A continuous output current. This is the maximum DC load; derating for ambient temperature and package thermal resistance applies in practice."},{"question":"Can LM337KTTR be used for negative voltage regulation down to -1.2 V?","answer":"Yes. The adjustable output range goes from a minimum of -1.2 V to a maximum of -37 V, so it can regulate a -1.2 V rail from a more negative input."},{"question":"What is LM337KTTR's PSRR at 120 Hz?","answer":"The PSRR is listed as 77 dB at 120 Hz. This is the ripple rejection at the line-frequency fundamental, important for clean analog supplies."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM337KTTR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM337KTTR 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}}