{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LP8556TME-E11/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LP8556TME-E11-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LP8556TME-E11-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LP8556TME-E11%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LP8556TME-/NOPB, DC-DC boost regulator LED driver, 3 outputs at 23 mA each, PWM dimming, 312/625/1250 kHz switching frequency, 7-21V output range, 20-DSBGA package, -30 to 85°C operation.","salesMarkdown":"## Three-channel boost LED driver for LCD backlighting The LP8556TME-E11/NOPB: PWM dimming is supported directly, allowing brightness control via a PWM signal on the dimming input. The switching frequency is pin-selectable among 312 kHz, 625 kHz, and 1250 kHz, giving the designer flexibility to optimize inductor size versus switching losses and EMI profile. Output voltage range is 7 V to 21 V. Supply input range is 2.7 V to 20 V. ## Switching frequency selection — inductor sizing trade-off The three switching frequency options (312 kHz, 625 kHz, 1250 kHz) let the designer choose between a smaller inductor at higher frequency versus lower switching losses at lower frequency. At 1250 kHz the inductor can be physically smaller, which matters in space-constrained portable designs, but the higher gate-drive losses reduce efficiency slightly. At 312 kHz efficiency peaks, but the inductor value and footprint increase. The 625 kHz setting is a common middle ground for general-purpose backlight designs. ## Package and assembly considerations Operating temperature range is -30°C to 85°C ambient, which covers commercial and most industrial indoor environments but does not extend to automotive under-hood or extended outdoor enclosures where ambient may exceed 85°C. ## Lifecycle and sourcing It is ROHS3 compliant. For volume production or dual-source planning, the LM2703MF-ADJ/NOPB is a single-output boost regulator in the same functional class but with a 0.35 A output and a different package — it is not a pin-compatible drop-in but may serve as an alternative topology for single-string designs.","metaTitle":"LP8556TME-E11/NOPB LED Driver, DC-DC Boost, 3-Ch 23mA","metaDescription":"LP8556TME-E11/NOPB is a 3-channel DC-DC boost LED driver with PWM dimming, 7-21V output, 312/625/1250 kHz 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":"20-WFBGA, DSBGA","lifecycle_stage":"eol_hot","Voltage - Output":"7V ~ 21V","Number of Outputs":"3","Internal Switch(s)":"Yes","Operating Temperature":"-30°C ~ 85°C (TA)","Voltage - Supply (Max)":"20V","Voltage - Supply (Min)":"2.7V","Supplier Device Package":"20-DSBGA (2.04x1.78)","Current - Output / Channel":"23mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.16","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.16000","currency":"USD"},{"qty":10,"price":"$1.94100","currency":"USD"},{"qty":25,"price":"$1.83120","currency":"USD"},{"qty":100,"price":"$1.56010","currency":"USD"},{"qty":250,"price":"$1.46492","currency":"USD"},{"qty":500,"price":"$1.28180","currency":"USD"},{"qty":1250,"price":"$1.06206","currency":"USD"},{"qty":2500,"price":"$1.03650","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/682df2d4b171769bcde9ea1d20ac9a3b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does LP8556TME-/NOPB require an external boost inductor?","answer":"Yes. The LP8556TME-/NOPB is a DC-DC boost regulator with an internal switch, but the boost inductor is an external component. The inductor value is selected based on the chosen switching frequency (312 kHz, 625 kHz, or 1250 kHz), output voltage, and LED current."},{"question":"What is the maximum output current of LP8556TME-/NOPB?","answer":"Each of the three output channels is rated for 23 mA. The total LED current is the sum of the three channels, up to 69 mA if all channels are used."},{"question":"When sourcing LP8556TME-/NOPB, what's the closest functional alternative?","answer":"The LM2703MF-ADJ/NOPB is a single-output DC-DC boost regulator also intended for backlight applications, but it delivers up to 0.35 A on one channel and comes in a different package. It is not a pin-compatible replacement but can serve as an alternative for single-string designs where the three-channel output of the LP8556 is not needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LP8556TME-E11-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/LP8556TME-E11-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}}