{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LT1121AHVIS8#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LT1121AHVIS8PBF","canonicalUrl":"https://icboms.com/analog-devices/LT1121AHVIS8PBF","factsUrl":"https://icboms.com/api/mcp/products/LT1121AHVIS8%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LT1121AHVIS8#PBF, positive adjustable LDO regulator, 150 mA output, 0.7 V dropout at 150 mA, 50 µA quiescent current, 58 dB PSRR at 120 Hz, -40°C to 125°C, 8-SOIC package, ROHS3 compliant.","salesMarkdown":"## LDO for industrial and automotive supply rails The Analog Devices LT1121AHVIS8#PBF is a single-output positive adjustable LDO regulator delivering 150 mA. It accepts an input up to 30 V. ## Temperature grade and protection in harsh environments Rated for -40°C to 125°C operation, this part covers engine-bay electronics, outdoor telecom enclosures, and factory-floor control boards without derating. The protection set includes over-temperature shutdown and reverse-polarity protection — the latter is a practical safeguard in field-wired equipment where a miswired supply can otherwise kill an unprotected LDO. An Enable pin (active-high) provides a means to sequence the rail or shut down the regulator in low-power sleep modes. ## Package and mounting The SOIC-8 footprint is a standard low-profile package for linear regulators; thermal performance depends on PCB copper area — this 150 mA part typically does not require a dedicated heatsink in normal ambient conditions, but the 125°C junction rating should be checked against the application's power dissipation. ## Lifecycle and sourcing The LT1121AHVIS8#PBF carries an Active product status from Analog Devices and is ROHS3 compliant. It remains a current-production line item suitable for new designs. Pricing and availability are confirmed at quote time against an RFQ through independent distribution — no factory authorization or minimum-buy constraints apply for standard volumes.","metaTitle":"LT1121AHVIS8#PBF LDO Regulator, 150 mA, Adjustable","metaDescription":"LT1121AHVIS8#PBF positive adjustable LDO, 150 mA output, 0.7 V dropout at full load, 50 µA quiescent current, -40°C to 125°C, 8-SOIC.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"PSRR":"58dB (120Hz)","Package":"Tube","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Control Features":"Enable","Current - Output":"150mA","Protection Features":"Over Temperature, Reverse Polarity","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C","Voltage - Input (Max)":"30V","Voltage Dropout (Max)":"0.7V @ 150mA","Current - Supply (Max)":"14 mA","Voltage - Output (Max)":"30V","Supplier Device Package":"8-SO","Current - Quiescent (Iq)":"50 µA","Voltage - Output (Min/Fixed)":"3.75V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$8.73","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$8.73000","currency":"USD"},{"qty":10,"price":"$7.88500","currency":"USD"},{"qty":25,"price":"$7.51840","currency":"USD"},{"qty":100,"price":"$6.52830","currency":"USD"},{"qty":250,"price":"$6.23492","currency":"USD"},{"qty":500,"price":"$5.68478","currency":"USD"},{"qty":1000,"price":"$5.19000","currency":"USD"}]},"links":{"datasheetUrl":"https://www.analog.com/media/en/technical-documentation/data-sheets/1121fg.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional equivalent or replacement for LT1121AHVIS8#PBF?","answer":"The LT1521CMS8#PBF is a pin-compatible second source from the same manufacturer with the same PSRR (58 dB at 120 Hz) and adjustable output, but it offers 300 mA output current and a lower 20 V maximum input. For higher current at the same 30 V input rating, the through-hole LT1129CT#PBF delivers 700 mA with 64 dB PSRR. Neither is a direct drop-in — verify the input voltage and current requirements against your BOM before substituting."},{"question":"What is LT1121AHVIS8#PBF's PSRR?","answer":"PSRR is 58 dB at 120 Hz, which provides meaningful attenuation of mains ripple in post-rectifier analog supply rails."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LT1121AHVIS8PBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LT1121AHVIS8PBF when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}