{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LP3879MR-1.0","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LP3879MR-1.0","canonicalUrl":"https://icboms.com/texas-instruments/LP3879MR-1.0","factsUrl":"https://icboms.com/api/mcp/products/LP3879MR-1.0","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LP3879MR-1.0, LDO voltage regulator, fixed 1V output, 800mA, 60dB PSRR (1kHz), 6V max input, -40°C to 125°C, 8-PowerSOIC (PowerPad) package, surface mount.","salesMarkdown":"## What this fixed-output LDO does The LP3879MR-1.0 is a single-output, positive-voltage LDO regulator from Texas Instruments that delivers a fixed 1V rail at up to 800 mA. It operates from a maximum input of 6V, so the upstream rail needs to sit comfortably above 1V plus dropout — typical for low-voltage digital cores, sensor supplies, or post-regulation stages. The 8-PowerSOIC package with an exposed PowerPad helps pull heat out of the die; the pad should be soldered to a copper plane on the board for any load near the 800 mA limit. Enable control is on-chip, letting you sequence the rail with a logic signal. ## Key ratings and what they mean for your BOM The fixed 1V output is not adjustable. The 800 mA current rating sets the load budget; derate for ambient temperature and input voltage. The 60 dB PSRR at 1 kHz gives moderate rejection of ripple from a switching preregulator. Quiescent current is 1.4 mA. Protection features — over-current, over-temperature, short-circuit — are built in. ## Package and rework considerations The 8-PowerSOIC package has a body width of 3.90 mm and a PowerPad on the bottom. That pad is the main thermal path — it must be soldered to a board copper plane. The supplier device package is listed as 8-SO PowerPad — same footprint, same thermal land pattern.","metaTitle":"LP3879MR-1.0 LDO Regulator, 1V Fixed Output, 800mA","metaDescription":"Texas Instruments LP3879MR-1.0 LDO voltage regulator: 1V fixed output, 800mA, 60dB PSRR at 1kHz, -40 to 125°C, 8-PowerSOIC. Active, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"PSRR":"60dB (1kHz)","Package":"Bulk","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"8-PowerSOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Control Features":"Enable","Current - Output":"800mA","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)":"6V","Current - Supply (Max)":"2.2 mA","Supplier Device Package":"8-SO PowerPad","Current - Quiescent (Iq)":"1.4 mA","Voltage - Output (Min/Fixed)":"1V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.12","stockQuantity":0,"priceTiers":[{"qty":268,"price":"$1.12000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/14f0f8aaff467f1195ad5d41bcefc91a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is LP3879MR-1.0 available via RFQ confirmation?","answer":"Availability is confirmed at quote time; the part is sourced to order through independent distribution against an RFQ."},{"question":"What is the price of LP3879MR-1.0?","answer":"Current pricing is provided at quote time against an RFQ; no public price is listed."},{"question":"Can LP3879MR-1.0 be used as a replacement for LP3879MR-ADJ?","answer":"No — the LP3879MR-1.0 has a fixed 1V output, while the LP3879MR-ADJ is adjustable. They are not pin-compatible replacements without circuit changes."},{"question":"What is the difference between LP3879MR-1.0 and LP3879MR-1.2?","answer":"The LP3879MR-1.0 outputs a fixed 1V; the LP3879MR-1.2 outputs a fixed 1.2V. All other ratings (800 mA, 6V input, package, temperature range) are identical."},{"question":"Is LP3879MR-1.0 obsolete?","answer":"No, the part is listed as Active with a current lifecycle stage."},{"question":"Who supplies LP3879MR-1.0 and how is it quoted for volume purchases?","answer":"Texas Instruments is the manufacturer. Volume quotes are provided against an RFQ through independent distribution; pricing and lead time confirmed at quote time."},{"question":"What is LP3879MR-1.0's listed PSRR?","answer":"The PSRR is 60 dB at 1 kHz."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LP3879MR-1.0","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LP3879MR-1.0 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}}