{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX17543ATP+T","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX17543ATPT","canonicalUrl":"https://icboms.com/analog-devices/MAX17543ATPT","factsUrl":"https://icboms.com/api/mcp/products/MAX17543ATP%2BT","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX17543ATP+T Himalaya series, Step-Down Buck, Adjustable Output, 2.5A, 4.5V to 42V Input, 100kHz to 2.2MHz, 20-TQFN (4x4), -40°C to 125°C.","salesMarkdown":"## Wide-input buck for industrial and automotive rails The MAX17543ATP+T is an Analog Devices Himalaya series step-down (buck) switching regulator delivering up to 2.5A continuous output from a 4.5V to 42V input range. The output is adjustable from 0.9V up to 37.8V, making it a flexible choice for generating intermediate bus voltages or point-of-load rails in systems that must handle 12V, 24V, or 48V nominal supplies with transients. Integrated synchronous rectification keeps the external BOM to an inductor and a few capacitors — no external catch diode needed. The switching frequency is programmable from 100kHz to 2.2MHz, letting the designer trade efficiency against inductor footprint. The 20-pin TQFN (4x4 mm) package with exposed pad helps pull heat into the board plane. ## Active production — no LTB concern The MAX17543ATP+T carries an Active product status. ## What the 4.5V to 42V input range means for your rail The 4.5V minimum input means this part will start cleanly from a 5V rail with margin, and the 42V maximum covers 24V industrial buses with headroom for transients up to 40V. For automotive designs on a 12V battery line, cold-crank dips to 6V are still above the undervoltage lockout threshold. The 2.5A output is a practical ceiling for powering FPGAs, sensor clusters, or communication modules from a single converter. The adjustable output down to 0.9V suits modern low-voltage cores, while the 37.8V upper limit allows generating a 24V auxiliary rail from a 48V supply. ## Rework and package notes The 20-TQFN (4x4 mm) package has a 0.5 mm pitch — manageable under a hot-air station with a fine nozzle. The exposed pad on the bottom is the main thermal path; a good via-stitch pattern under the pad is essential for keeping junction temperature under 125°C at full load. The part is RoHS3 compliant, so no lead-free process conflict. Orientation is marked by a pin-1 dot on the top surface; the datasheet should be consulted for the exact pad layout, but the package outline is standard for 20-lead TQFN.","metaTitle":"MAX17543ATP+T Himalaya Buck Regulator, 4.5V-42V Input","metaDescription":"MAX17543ATP+T is an Active Himalaya step-down buck regulator from Analog Devices. 4.5V to 42V input, adjustable 0.9V to 37.8V output at 2.5A. 20-TQFN package.","metaKeywords":null},"attributes":{"series":"Himalaya","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Series":"Himalaya","Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Step-Down","Topology":"Buck","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"20-WFQFN Exposed Pad","lifecycle_stage":"eol_hot","Current - Output":"2.5A","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"100kHz ~ 2.2MHz","Operating Temperature":"-40°C ~ 125°C (TJ)","Synchronous Rectifier":"Yes","Voltage - Input (Max)":"42V","Voltage - Input (Min)":"4.5V","Voltage - Output (Max)":"37.8V","Supplier Device Package":"20-TQFN (4x4)","Voltage - Output (Min/Fixed)":"0.9V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.92","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$4.92000","currency":"USD"},{"qty":10,"price":"$4.42300","currency":"USD"},{"qty":25,"price":"$4.18160","currency":"USD"},{"qty":100,"price":"$3.62390","currency":"USD"},{"qty":250,"price":"$3.43804","currency":"USD"},{"qty":500,"price":"$3.08494","currency":"USD"},{"qty":1000,"price":"$2.60176","currency":"USD"},{"qty":2500,"price":"$2.47167","currency":"USD"}]},"links":{"datasheetUrl":"https://datasheets.maximintegrated.com/en/ds/MAX17543.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX17543ATPT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX17543ATPT 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}}