{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM337IMP/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM337IMP-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM337IMP-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM337IMP%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM337IMP/NOPB, negative adjustable voltage regulator, 1.5 A output, -1.2 V to -37 V range, 60 dB PSRR at 120 Hz, SOT-223-4 surface-mount package, -40°C to 125°C operating temperature.","salesMarkdown":"## Negative rail workhorse — 1.5 A adjustable in SOT-223-4 The Texas Instruments LM337IMP/NOPB is a negative adjustable voltage regulator delivering up to 1.5 A output current from a -1.2 V to -37 V output range, in a surface-mount SOT-223-4 package. It is the negative complement to the LM317 family, used wherever a clean negative rail is needed — op-amp bipolar supplies, ADC/DAC reference rails, or local board-level regulation in industrial and automotive environments. ## 1.5 A output — sizing the load and the thermal budget Rated for 1.5 A continuous output, this part handles moderate local loads like analog front-end rails or small motor drives. The SOT-223-4 package has a thermal pad on the tab — the board copper area under that pad sets the junction-to-ambient thermal resistance; at 1.5 A with a moderate dropout, a 2 oz copper pour of at least 1 in² is typical to keep junction temperature below the 125°C maximum. Output voltage is adjustable with two external resistors down to -1.2 V reference, and the maximum input voltage is -40 V, giving headroom for -48 V telecom rails or -24 V industrial buses. ## 60 dB PSRR — ripple rejection for sensitive analog rails The 60 dB PSRR at 120 Hz is the figure that matters for audio or precision analog designs — it attenuates full-wave rectifier ripple by a factor of 1000. That keeps hum off the negative supply of an op-amp or ADC reference, which directly affects noise floor and THD in the signal path.","metaTitle":"Texas Instruments LM337IMP/NOPB Negative Adjustable","metaDescription":"Texas Instruments LM337IMP/NOPB negative adjustable voltage regulator, 1.5 A output, -1.2 V to -37 V range, 60 dB PSRR at 120 Hz, SOT-223-4, active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","PSRR":"60dB (120Hz)","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"TO-261-4, TO-261AA","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":"-40°C~125°C","Voltage - Input (Max)":"-40V","Voltage Dropout (Max)":"-","Voltage - Output (Max)":"-37V","Supplier Device Package":"SOT-223-4","Voltage - Output (Min/Fixed)":"-1.2V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.4400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/0778c63670ae2b9da77d4109fe26090b.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM337IMP%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"What protection features does LM337IMP/NOPB include?","answer":"Over-temperature shutdown and short-circuit current limiting are built in — no external protection diodes needed for most applications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM337IMP-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/LM337IMP-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}}