{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM337KCSE3","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM337KCSE3","canonicalUrl":"https://icboms.com/texas-instruments/LM337KCSE3","factsUrl":"https://icboms.com/api/mcp/products/LM337KCSE3","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM337KCSE3, negative adjustable linear regulator, 1.5 A output, TO-220-3 through-hole package, 77 dB PSRR at 120 Hz, -1.2 V to -37 V output range.","salesMarkdown":"## 1.5 A negative rail, adjustable down to -1.2 V Output voltage is set with two external resistors from -1.2 V down to -37 V, covering the common negative supply needs for op-amp rails, bias generators, and analog front ends. Its 77 dB PSRR at 120 Hz means the output rejects line-frequency ripple well — useful when the negative rail shares a board with switching converters or motor drives. ## Thermal and protection envelope The TO-220-3 package allows bolt-on heatsinking; the tab is electrically connected to the output pin, so an insulating pad or mica washer is needed if the heatsink is chassis-grounded. Built-in over-temperature and short-circuit protection prevent damage under output faults or thermal runaway — the regulator folds back or shuts down rather than failing open.","metaTitle":"LM337KCSE3 – Texas Instruments Negative Adjustable Regulator","metaDescription":"Texas Instruments LM337KCSE3 negative adjustable linear regulator, 1.5 A output, 77 dB PSRR at 120 Hz, TO-220-3 package. Active lifecycle, 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":"77dB (120Hz)","Series":"-","Package":"Tube","Output Type":"Adjustable","Mounting Type":"Through Hole","Package / Case":"TO-220-3","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":"TO-220-3","Voltage - Output (Min/Fixed)":"-1.2V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.1700","priceTiers":[{"qty":1,"price":"$1.17000","currency":"USD"},{"qty":10,"price":"$1.04800","currency":"USD"},{"qty":25,"price":"$0.99440","currency":"USD"},{"qty":100,"price":"$0.81670","currency":"USD"},{"qty":250,"price":"$0.76348","currency":"USD"},{"qty":500,"price":"$0.67468","currency":"USD"},{"qty":1000,"price":"$0.53265","currency":"USD"},{"qty":2500,"price":"$0.50250","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/d1a7551c5508ee482aad7276b423590c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM337KCSE3/alternatives.json"},"ai":{"faq":[{"question":"What is the output current of the LM337KCSE3?","answer":"The LM337KCSE3 is rated for 1.5 A continuous output current. This is the maximum DC load; derating applies at elevated ambient temperature and depends on heatsinking."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM337KCSE3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM337KCSE3 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}}