{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LP8556SQE-E00/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LP8556SQE-E00-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LP8556SQE-E00-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LP8556SQE-E00%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LP8556SQE-E00/NOPB, DC DC Regulator, Backlight LED Driver, Boost Topology, 5 Outputs, 25mA per Channel, PWM Dimming, 312/625/1250kHz, 24-WQFN.","salesMarkdown":"## Five-channel boost LED driver for LCD backlighting The Texas Instruments LP8556SQE-E00/NOPB is a DC-DC boost regulator for LED backlight applications. It integrates five regulated current sinks, each rated for 25 mA. ## Switching frequency and inductor selection The three programmable switching frequencies give the designer control over the inductor footprint and efficiency curve. Running at 1250 kHz shrinks the inductor footprint but increases switching losses. ## Output voltage compliance and string matching The boost converter regulates the output voltage to the highest forward voltage among the five LED strings plus the headroom of the current sinks. The 16 V to 34.5 V output range covers most medium-format LCD panels. ## Lifecycle and compliance It is fully RoHS3 compliant, which simplifies qualification for EU-market products and avoids the need for a separate exemption review.","metaTitle":"LP8556SQE-E00/NOPB LED Driver, DC-DC Boost, 5-Channel, 25mA","metaDescription":"TI LP8556SQE-E00/NOPB DC-DC boost regulator for LED backlighting. 5 outputs at 25mA, PWM dimming, 312kHz-1250kHz switching. Active, RoHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"DC DC Regulator","Dimming":"PWM","Package":"Tape & Reel (TR); Cut Tape (CT)","Topology":"Step-Up (Boost)","Frequency":"312kHz, 625kHz, 1250kHz","Applications":"Backlight","Mounting Type":"Surface Mount","Package / Case":"24-WFQFN Exposed Pad","lifecycle_stage":"eol_hot","Voltage - Output":"16V ~ 34.5V","Number of Outputs":"5","Internal Switch(s)":"Yes","Operating Temperature":"-30°C ~ 85°C (TA)","Voltage - Supply (Max)":"20V","Voltage - Supply (Min)":"2.7V","Supplier Device Package":"24-WQFN (4x4)","Current - Output / Channel":"25mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.06688","stockQuantity":0,"priceTiers":[{"qty":250,"price":"$2.06688","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/682df2d4b171769bcde9ea1d20ac9a3b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"LP8556SQE-E00/NOPB equivalent or replacement?","answer":"The LM2703MF-ADJ/NOPB is a single-output boost regulator also intended for backlight applications, but it drives only one channel at up to 0.35 A. It is not a pin-compatible or functional replacement for the five-channel LP8556. No direct second-source alternate is listed in the official records."},{"question":"What is LP8556SQE-E00/NOPB's listed dimming method?","answer":"Dimming is performed via PWM, controlled through the PWM input pin. The internal PWM generator modulates the LED current sinks to achieve the desired brightness level."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LP8556SQE-E00-NOPB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LP8556SQE-E00-NOPB 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}}