{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3424MHX/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3424MHX-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM3424MHX-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM3424MHX%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM3424MHX/NOPB, DC DC Controller, LED driver controller, 1 output, 2 MHz switching frequency, Analog/PWM dimming, 4.5V to 75V supply, -40°C to 125°C, 20-PowerTSSOP package.","salesMarkdown":"## What this controller does — and why the topology list matters The TI LM3424MHX/NOPB is a DC DC controller designed for LED drive applications, not a regulator with an integrated switch. That means you pair it with an external MOSFET and inductor, which gives you the flexibility to pick the switch based on your current and thermal budget. It supports four topologies — Buck, Boost, Flyback, and SEPIC — so one controller can cover a constant-current front end for a range of LED strings or backlight rails. The 2 MHz switching frequency lets you use smaller magnetics and ceramics, which helps when board space is tight in a 20-HTSSOP footprint. ## Dimming and temperature — what they mean for a field swap or a new build Both analog and PWM dimming are on the table, so you can choose the method that fits your LED driver architecture — analog for simple current adjust, PWM for higher dimming ratios without color shift. The operating junction temperature range of -40°C to 125°C means this part is at home in automotive exterior lighting, industrial high-bay fixtures, or outdoor signage, not just benign indoor gear. If you are swapping one in the field, the 20-HTSSOP package is a standard PowerPAD footprint; the exposed pad needs a good solder joint to the board's copper plane for thermal relief, but it is a straightforward reflow or hot-air job. ## Lifecycle and sourcing — active, no LTB clock ticking The LM3424MHX/NOPB carries an Active lifecycle status, so there is no last-time-buy window to worry about for new designs or production replenishment. ROHS3 compliant, no lead or halogen restrictions to trip up a BOM review.","metaTitle":"LM3424MHX/NOPB LED Driver Controller, 2 MHz, 20-HTSSOP","metaDescription":"TI LM3424MHX/NOPB DC DC Controller for LED drivers. Supports Buck, Boost, Flyback, SEPIC topologies. 2 MHz switching, -40°C to 125°C. Active, ROHS3.","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":"Tape & Reel (TR); Cut Tape (CT)","Topology":"Flyback, SEPIC, Step-Down (Buck), Step-Up (Boost)","Frequency":"2MHz","Mounting Type":"Surface Mount","Package / Case":"20-PowerTSSOP (0.173\\\", 4.40mm Width)","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":"20-HTSSOP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.65","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.65000","currency":"USD"},{"qty":10,"price":"$3.28200","currency":"USD"},{"qty":25,"price":"$3.10280","currency":"USD"},{"qty":100,"price":"$2.68920","currency":"USD"},{"qty":250,"price":"$2.55128","currency":"USD"},{"qty":500,"price":"$2.28924","currency":"USD"},{"qty":1000,"price":"$1.95150","currency":"USD"},{"qty":2500,"price":"$1.95150","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/10ec9c77262a9b2e7abfd81a4ed427f9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the switching frequency of LM3424?","answer":"The LM3424MHX/NOPB switches at 2 MHz, which allows the use of smaller inductors and ceramic output capacitors, shrinking the overall power-stage footprint."},{"question":"Does LM3424 support analog dimming?","answer":"Yes, the LM3424MHX/NOPB supports both analog and PWM dimming, giving the designer flexibility to choose the dimming method that best fits the LED driver application."},{"question":"How does LM3424 compare to LM3409?","answer":"The LM3424 is a DC DC controller with a 2 MHz switching frequency and supports four topologies (Buck, Boost, Flyback, SEPIC), while the LM3409 is a hysteretic buck controller that operates at a lower frequency and is optimized for simple step-down LED drive. The LM3424 offers more topology flexibility and higher switching speed for compact designs, but the LM3409 is a simpler choice for a basic buck LED driver."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3424MHX-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/LM3424MHX-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}}