{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM317MQKTPR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM317MQKTPR","canonicalUrl":"https://icboms.com/texas-instruments/LM317MQKTPR","factsUrl":"https://icboms.com/api/mcp/products/LM317MQKTPR","rawCanonicalId":null},"summary":{"shortDescription":"onsemi LM317MQKTPR, adjustable positive voltage regulator, 500 mA output, 1.25 V to 37 V output range, 40 V max input, PSRR 80 dB ~ 65 dB at 120 Hz, -40°C to 125°C junction, TO-252-3 (DPak) surface-mount package.","salesMarkdown":"## Adjustable 500 mA regulator with industrial temperature range The LM317MQKTPR from onsemi is an adjustable positive voltage regulator delivering up to 500 mA output current. Its output can be set anywhere from 1.25 V to 37 V using two external resistors, making it a flexible choice for local post-regulation or variable bench supplies. Built-in protection against overcurrent, overtemperature, and short circuits reduces the need for external supervisory circuitry. ## PSRR and ripple rejection for analog rails Power-supply rejection ratio is specified at 80 dB to 65 dB at 120 Hz — the full-wave rectifier ripple frequency. At 80 dB, a 1 V peak-to-peak input ripple is attenuated to roughly 100 µV at the output, which is sufficient for most op-amp and ADC supply rails that do not require an ultra-low-noise LDO.","metaTitle":"LM317MQKTPR adjustable regulator, 500 mA, TO-252-3, obsolete","metaDescription":"LM317MQKTPR adjustable positive regulator, 500 mA output, 1.25V to 37V, PSRR 80dB~65dB at 120Hz, industrial temp -40°C to 125°C, TO-252-3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","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-252-3, DPak (2 Leads + Tab), SC-63","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Control Features":"-","Current - Output":"500mA","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(TJ)","Voltage - Input (Max)":"40V","Voltage Dropout (Max)":"-","Voltage - Output (Max)":"37V","Supplier Device Package":"TO-252-3","Current - Quiescent (Iq)":"10 mA","Voltage - Output (Min/Fixed)":"1.25V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.0000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8add0f5d520bdac069fa89d976dea0aa.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM317MQKTPR/alternatives.json"},"ai":{"faq":[{"question":"What package is LM317MQKTPR?","answer":"It comes in a TO-252-3 (DPak) surface-mount package with two leads and a tab, also known as SC-63. The supplier device package is TO-252-3."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM317MQKTPR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM317MQKTPR 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}}