{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM317LCPWRE4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM317LCPWRE4","canonicalUrl":"https://icboms.com/texas-instruments/LM317LCPWRE4","factsUrl":"https://icboms.com/api/mcp/products/LM317LCPWRE4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM317LCPWRE4 adjustable positive voltage regulator, 100 mA output, 38 V input max, 1.2 V to 32 V output range, PSRR 80 dB to 65 dB at 120 Hz, 8-TSSOP package, 0°C to 125°C operating temperature.","salesMarkdown":"## PSRR and output current — the two numbers that decide the rail The LM317LCPWRE4 is a 100 mA adjustable positive voltage regulator from Texas Instruments, part of the LM317 family. Its PSRR of 80 dB to 65 dB at 120 Hz means it attenuates 120 Hz ripple from a rectified AC input by a factor of 10,000 to 1,800 — this is the spec that makes it useful for cleaning up a noisy supply rail before feeding sensitive analog circuitry. ## Input and output voltage envelope — where it fits in the power tree Maximum input voltage is 38 V, and the output is adjustable from 1.2 V up to 32 V. The single regulator output is positive configuration only. ## Protection features and quiescent current Built-in protection against over-current, over-temperature, and short circuit — the regulator survives a sustained output short without damage. Quiescent current is 2.5 mA typical, which is the current drawn from the input regardless of load; at 100 mA output this is a 2.5 % overhead, acceptable for most fixed-load bias rails. ## Package and temperature grade — board-fit check Supplied in an 8-TSSOP surface-mount package (4.40 mm width, 0.173\" pitch).","metaTitle":"LM317LCPWRE4 Adjustable Regulator, 100 mA, 8-TSSOP, Active","metaDescription":"Texas Instruments LM317LCPWRE4 adjustable positive regulator, 100 mA output, 38 V input max, PSRR 80 dB to 65 dB at 120 Hz. Active production, 8-TSSOP package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","PSRR":"80dB ~ 65dB (120Hz)","Series":"-","Package":"Tape & Reel (TR)","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"8-TSSOP (0.173\\\", 4.40mm Width)","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":"0°C~125°C","Voltage - Input (Max)":"38V","Voltage Dropout (Max)":"-","Voltage - Output (Max)":"32V","Supplier Device Package":"8-TSSOP","Current - Quiescent (Iq)":"2.5 mA","Voltage - Output (Min/Fixed)":"1.2V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$9.2500","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/6e1b4db1f31e3d4f44355e3bccdda90e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM317LCPWRE4/alternatives.json"},"ai":{"faq":[{"question":"Can I use LM317LCPWRE4 to replace LM317L in a circuit?","answer":"The LM317LCPWRE4 is a surface-mount 8-TSSOP variant of the LM317L family. The base product number is LM317, so the adjustable regulator function is the same. However, the package and pin configuration differ from the through-hole TO-220 or D2PAK versions of the classic LM317 — verify the footprint and pinout against your board layout before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM317LCPWRE4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM317LCPWRE4 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}}