{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LP5868RKPR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LP5868RKPR","canonicalUrl":"https://icboms.com/texas-instruments/LP5868RKPR","factsUrl":"https://icboms.com/api/mcp/products/LP5868RKPR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LP5868RKPR linear LED driver, 18-channel constant current, 50 mA per channel, analog and PWM dimming, 2.7-5.5 V supply, 40-VFQFN exposed-pad package.","salesMarkdown":"## 18 channels at 50 mA — dimming and topology decide the fit The LP5868RKPR: This is an 18-output constant-current linear LED driver, each channel sourcing up to 50 mA. The linear topology means no inductor or switching noise — the pass element drops the excess voltage as heat, so the thermal design at the PCB level is the real current limiter, not the silicon. Both analog and PWM dimming are supported on-chip. Analog dimming sets the DC current level per channel; PWM dimming modulates the on-time for finer grayscale control. A design that needs smooth brightness steps without colour shift will use the PWM path, while a simple constant-brightness backlight can run analog-only and save a PWM timer on the host MCU. No secondary regulator is needed when the driver shares a rail with the system MCU or FPGA bank. ## Industrial temperature grade and package thermal rules Without that thermal path, the 50 mA per channel derates early — the package itself is the heatsink. ## Surface-mount assembly and supply posture Cut Tape works for prototype or low-volume builds. Mounting is surface-mount only; no through-hole variant exists. Sourced through independent distribution channels.","metaTitle":"LP5868RKPR LED Driver, 18-Ch, 50 mA, 40-VQFN","metaDescription":"Active-production 18-channel constant-current linear LED driver, 50 mA per channel, analog and PWM dimming, 2.7-5.5 V supply, -40 to 85°C, 40-VQFN.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"Not applicable","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Type":"Linear","Dimming":"Analog, PWM","Package":"Tape & Reel (TR); Cut Tape (CT)","Topology":"Constant Current","Frequency":"31.2MHz","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"40-VFQFN Exposed Pad","lifecycle_stage":"eol_hot","Number of Outputs":"18","Internal Switch(s)":"Yes","Operating Temperature":"-40°C ~ 85°C (TA)","Voltage - Supply (Max)":"5.5V","Voltage - Supply (Min)":"2.7V","Supplier Device Package":"40-VQFN (5x5)","Current - Output / Channel":"50mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.74","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.74000","currency":"USD"},{"qty":10,"price":"$2.45700","currency":"USD"},{"qty":25,"price":"$2.31800","currency":"USD"},{"qty":100,"price":"$1.97490","currency":"USD"},{"qty":250,"price":"$1.85436","currency":"USD"},{"qty":500,"price":"$1.62256","currency":"USD"},{"qty":1000,"price":"$1.34441","currency":"USD"},{"qty":3000,"price":"$1.07989","currency":"USD"},{"qty":6000,"price":"$1.03990","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/689871f2b79351059e4e5026f74bf5d4.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional second-source for LP5868RKPR — TLC5940RHBR?","answer":"The TLC5940RHBR is a 16-channel linear driver (120 mA per channel) but uses a shift-register topology rather than constant-current per channel. The LP5868RKPR's 18 outputs and internal switch are not pin-compatible with the TLC5940RHBR — a board spin is required to swap between them. The TLC69611RTWR is closer in topology (constant current, PWM dimming) but lacks an internal switch and has only 16 channels at 60 mA. Neither is a drop-in replacement."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LP5868RKPR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LP5868RKPR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}