{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3501TLX-21/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3501TLX-21-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM3501TLX-21-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM3501TLX-21%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM3501TLX-21/NOPB, DC-DC Step-Up (Boost) Regulator, Fixed 21V Output, 640mA Switch, 1MHz, 8-WFBGA, -40°C to 125°C.","salesMarkdown":"## 21V fixed boost for backlight strings The LM3501TLX-21/NOPB is a fixed-output step-up DC-DC regulator from Texas Instruments, purpose-built for backlight applications. It delivers a regulated 21V from an input supply ranging from 2.7V to 7V, with an integrated switch rated at 640mA. ## 1 MHz switching — inductor and footprint trade-offs Switching at 1 MHz lets you use a physically smaller inductor — think 2.2 to 4.7 µH range — which helps when board space is tight. The trade-off is that switching losses are higher than a 500 kHz part, so thermal management in the 8-WFBGA package matters at the upper end of the load. The 8-DSBGA (8-WFBGA) package is a 0.50 mm pitch wafer-level ball grid array. No lab, no bench — this is a hot-air rework part. The exposed die face is the top; orientation is marked by a corner ball pattern, not a pin 1 dot you can see after reflow. Stencil aperture design and a proper reflow profile are non-negotiable. ## Wide temperature range covers outdoor and engine-bay backlights The 21V output is typical for driving two to six white LEDs in series, depending on LED Vf and current set by the external resistor.","metaTitle":"LM3501TLX-21/NOPB DC-DC Boost Regulator, 21V, 1MHz, Obsolete","metaDescription":"Texas Instruments LM3501TLX-21/NOPB DC-DC step-up boost regulator, 21V fixed output, 640mA switch, 1MHz, 8-WFBGA.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["DC-DC Power Modules"],"specifications":{"Mfr":"Texas Instruments","Type":"DC DC Regulator","Series":"-","Dimming":"-","Package":"Tape & Reel (TR)","Topology":"Step-Up (Boost)","Frequency":"1MHz","Applications":"Backlight","Mounting Type":"Surface Mount","Package / Case":"8-WFBGA","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Voltage - Output":"21V","Number of Outputs":"1","Internal Switch(s)":"Yes","Base Product Number":"LM3501","Operating Temperature":"-40°C~125°C(TJ)","Voltage - Supply (Max)":"7V","Voltage - Supply (Min)":"2.7V","Supplier Device Package":"8-DSBGA","Current - Output / Channel":"640mA (Switch)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/0afacb290363779d262ff33cb3b91dbf.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3501TLX-21%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy LM3501TLX-21/NOPB?","answer":"We source the LM3501TLX-21/NOPB through independent distribution. Submit an RFQ with your target quantity, and we will confirm availability and current pricing. No stock-holding claim — every quote is live at the time of request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3501TLX-21-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/LM3501TLX-21-NOPB when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}