{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX1954AEUB+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX1954AEUB","canonicalUrl":"https://icboms.com/analog-devices/MAX1954AEUB","factsUrl":"https://icboms.com/api/mcp/products/MAX1954AEUB%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX1954AEUB+ step-down buck controller, 300kHz switching, 91% max duty cycle, 3V to 13.2V supply, 10-uMAX/uSOP package, Tube.","salesMarkdown":"## 300 kHz buck controller with synchronous rectification The MAX1954AEUB+ is a current-mode PWM buck controller from Analog Devices, designed for step-down (buck) conversion in a 10-uMAX/uSOP package. It integrates a transistor driver output and synchronous rectifier, targeting point-of-load and intermediate bus regulation where board space is tight. Switching at a fixed 300 kHz, the controller delivers up to 91% duty cycle from a single positive output, operating from a 3 V to 13.2 V supply rail. The 300 kHz frequency balances external inductor and capacitor size against switching losses — a common sweet spot for 12 V intermediate bus conversion. Housed in a 10-TFSOP / 10-MSOP (0.118\", 3.00 mm Width) package, the MAX1954AEUB+ is supplied in Tube format. The 10-uMAX/uSOP footprint is a common small-outline package for controller ICs — the 0.50 mm pitch requires standard SMT assembly processes with no special via-in-pad demands. The 85°C ceiling suits most indoor power supplies, telecom line cards, and base-station intermediate rails where the controller itself is not directly exposed to the hot air stream. ## Active production, RoHS3 compliant Fully RoHS3 compliant (2011/65/EU + 2015/863), the part is lead-free and meets the latest restriction standards for electronic equipment placed on the EU market.","metaTitle":"MAX1954AEUB+ Buck Controller, 300kHz, 10-uMAX","metaDescription":"MAX1954AEUB+ step-down buck controller from Analog Devices. Active, RoHS3 compliant. 300kHz switching, 91% max duty cycle, 3-13.2V supply. Sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Package":"Tube","Function":"Step-Down","Topology":"Buck","Clock Sync":"No","Output Type":"Transistor Driver","Mounting Type":"Surface Mount","Output Phases":"1","Package / Case":"10-TFSOP, 10-MSOP (0.118\\\", 3.00mm Width)","lifecycle_stage":"eol_hot","Duty Cycle (Max)":"91%","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"300kHz","Operating Temperature":"-40°C ~ 85°C (TA)","Synchronous Rectifier":"Yes","Supplier Device Package":"10-uMAX/uSOP","Voltage - Supply (Vcc/Vdd)":"3V ~ 13.2V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.85","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.85000","currency":"USD"},{"qty":10,"price":"$3.46100","currency":"USD"},{"qty":25,"price":"$3.27240","currency":"USD"},{"qty":100,"price":"$2.83610","currency":"USD"},{"qty":250,"price":"$2.69064","currency":"USD"},{"qty":500,"price":"$2.41430","currency":"USD"},{"qty":1000,"price":"$2.03616","currency":"USD"},{"qty":2500,"price":"$1.93435","currency":"USD"},{"qty":5000,"price":"$1.86163","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/6bdf311423fd70070a22388a15650e6a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the MAX1954AEUB+ used for?","answer":"It is a step-down (buck) switching regulator controller with a transistor driver output. It regulates a positive output voltage from a higher input rail (3 V to 13.2 V) at a fixed 300 kHz switching frequency, using an external MOSFET and inductor."},{"question":"Does the MAX1954AEUB+ support synchronous rectification?","answer":"Yes, the controller includes a synchronous rectifier driver, which improves efficiency by replacing the freewheeling diode with a low-Rds(on) MOSFET. This reduces conduction losses, especially at lower output voltages where diode forward drop becomes significant."},{"question":"What is the maximum duty cycle of the MAX1954AEUB+?","answer":"The maximum duty cycle is 91%. This allows the controller to regulate output voltages close to the input rail — for example, a 12 V input can produce a 10.9 V output before dropout, which is useful for pre-regulation stages or battery-powered systems where the input voltage sags."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX1954AEUB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX1954AEUB when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}