{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM317LIPKG3","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM317LIPKG3","canonicalUrl":"https://icboms.com/texas-instruments/LM317LIPKG3","factsUrl":"https://icboms.com/api/mcp/products/LM317LIPKG3","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM317LIPKG3, adjustable positive LDO, 100 mA output, 38 V input max, 80 dB ~ 65 dB PSRR at 120 Hz, SOT-89-3 package, -40°C to 125°C operation","salesMarkdown":"## Adjustable LDO with 80 dB PSRR floor The LM317LIPKG3 is a Texas Instruments adjustable positive LDO delivering up to 100 mA from a 38 V input rail. Its PSRR holds 80 dB at 120 Hz, rolling to 65 dB — a meaningful margin for cleaning switching-regulator ripple before it reaches a sensitive analog load. Output voltage adjusts from 1.2 V to 32 V via two external resistors, matching the classic LM317 topology in a surface-mount SOT-89-3 footprint. ## PSRR profile and quiescent current At 120 Hz the PSRR starts at 80 dB and degrades to 65 dB — the 15 dB delta across frequency is typical of a three-terminal LDO without a separate bypass pin. The 2.5 mA quiescent current is a trade-off for that ripple rejection; a lower-Iq LDO would sacrifice PSRR at the same corner. Protection includes over-current, over-temperature, and short-circuit shutdown — the three-terminal design relies on internal thermal limiting rather than an external enable pin.","metaTitle":"LM317LIPKG3 – TI Adjustable LDO, 100 mA, SOT-89-3, Active","metaDescription":"Texas Instruments LM317LIPKG3 adjustable positive LDO, 100 mA output, 80 dB PSRR at 120 Hz, SOT-89-3 package. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","PSRR":"80dB ~ 65dB (120Hz)","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"TO-243AA","Product Status":"Active","lifecycle_stage":"eol_hot","Control Features":"-","Current - Output":"100mA","Base Product Number":"LM317","Protection Features":"Over Current, Over Temperature, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C~125°C","Voltage - Input (Max)":"38V","Voltage Dropout (Max)":"-","Voltage - Output (Max)":"32V","Supplier Device Package":"SOT-89-3","Current - Quiescent (Iq)":"2.5 mA","Voltage - Output (Min/Fixed)":"1.2V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9900","priceTiers":[{"qty":1,"price":"$0.99000","currency":"USD"},{"qty":10,"price":"$0.88800","currency":"USD"},{"qty":25,"price":"$0.84280","currency":"USD"},{"qty":100,"price":"$0.69240","currency":"USD"},{"qty":250,"price":"$0.64724","currency":"USD"},{"qty":500,"price":"$0.57198","currency":"USD"},{"qty":1000,"price":"$0.45156","currency":"USD"},{"qty":2000,"price":"$0.42600","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/6e1b4db1f31e3d4f44355e3bccdda90e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM317LIPKG3/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM317LIPKG3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM317LIPKG3 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}}