{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3429MH/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3429MH-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM3429MH-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM3429MH%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM3429MH/NOPB DC DC LED Controller, 2 MHz, Analog & PWM Dimming, SEPIC/Buck/Boost, 14-HTSSOP Exposed Pad.","salesMarkdown":"## 2 MHz switching ceiling and topology flexibility The LM3429MH/NOPB is a DC DC controller rated for a 2 MHz switching frequency, which lets the design shrink the inductor and output capacitor values below what a 500 kHz part would need — useful when board space is the constraint, not the thermal budget. It supports SEPIC, step-down (buck), and step-up (boost) topologies from a single controller, so the same BOM line covers multiple LED string configurations without a respin. ## 4.5 V to 75 V input and dimming methods Dimming is handled through either analog or PWM control, giving the system architect the choice between continuous current adjustment and high-resolution pulse-width modulation for colour mixing or brightness stepping. The single output drives an external N-channel MOSFET — no internal switch, so the current rating is set by the external FET and inductor, not by the controller package. The operating temperature range covers -40°C to 125°C junction, so the controller itself is not the thermal bottleneck in an engine-bay or outdoor LED luminaire — the external MOSFET and inductor derating set the real limit.","metaTitle":"Texas Instruments LM3429MH/NOPB LED Driver Controller, 2MHz","metaDescription":"Texas Instruments LM3429MH/NOPB DC DC LED controller, 2MHz switching, 4.5-75V input, Analog/PWM dimming, 14-HTSSOP. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"DC DC Controller","Dimming":"Analog, PWM","Package":"Tube","Topology":"SEPIC, Step-Down (Buck), Step-Up (Boost)","Frequency":"2MHz","Mounting Type":"Surface Mount","Package / Case":"14-TSSOP (0.173\\\", 4.40mm Width) Exposed Pad","lifecycle_stage":"eol_hot","Number of Outputs":"1","Internal Switch(s)":"No","Operating Temperature":"-40°C ~ 125°C (TJ)","Voltage - Supply (Max)":"75V","Voltage - Supply (Min)":"4.5V","Supplier Device Package":"14-HTSSOP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.94","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.94000","currency":"USD"},{"qty":10,"price":"$2.63600","currency":"USD"},{"qty":25,"price":"$2.49240","currency":"USD"},{"qty":100,"price":"$2.16000","currency":"USD"},{"qty":250,"price":"$2.04924","currency":"USD"},{"qty":500,"price":"$1.83878","currency":"USD"},{"qty":1000,"price":"$1.56750","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/54d6edafcde0c1c93ad3a89417daa91e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Will the LM3429MH/NOPB drop into a board designed for the TLC69611RTWR?","answer":"No — the TLC69611RTWR is a linear LED driver with 16 outputs and a 3.0 V supply, while the LM3429MH/NOPB is a switching controller with a single output and a 4.5-75 V input range. The package, pinout, and topology are different; a board spin is required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3429MH-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/LM3429MH-NOPB when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}