{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX1649CSA+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX1649CSA","canonicalUrl":"https://icboms.com/analog-devices/MAX1649CSA","factsUrl":"https://icboms.com/api/mcp/products/MAX1649CSA%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX1649CSA+ step-down (buck) PWM controller, 3-16 V supply, up to 300 kHz, 96.5% max duty cycle, 8-SOIC (0.154\", 3.90 mm width), tube.","salesMarkdown":"## Step-down controller, not a regulator — external FET required The MAX1649CSA+ is a current-mode PWM buck controller from Analog Devices, not a complete regulator — it drives an external transistor switch to step down a DC voltage. Function is Step-Down, topology Buck, output type Transistor Driver, with no synchronous rectifier. Supply voltage (Vcc/Vdd) spans 3 V to 16 V, switching frequency runs up to 300 kHz, and max duty cycle hits 96.5% — useful for high step-down ratios where the on-time dominates the switching period. ## Active, RoHS3, commercial temp — deployment check The SOIC-8 footprint is standard and widely second-sourced across the industry. ## Control features and output configuration Single positive output with Enable control — the Enable pin allows the controller to be gated by an external signal, useful for power sequencing or shutdown in battery-powered gear. No clock sync capability; the switching frequency is set by an external RC and runs up to 300 kHz. One output phase, output configuration Positive.","metaTitle":"Analog Devices MAX1649CSA+ Buck Controller, 8-SOIC","metaDescription":"Active production step-down PWM controller from Analog Devices. 3-16 V supply, up to 300 kHz switching, 96.5% duty cycle. 8-SOIC package. RoHS3 compliant.","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":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Control Features":"Enable","Duty Cycle (Max)":"96.5%","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"Up to 300kHz","Operating Temperature":"0°C ~ 70°C (TA)","Synchronous Rectifier":"No","Supplier Device Package":"8-SOIC","Voltage - Supply (Vcc/Vdd)":"3V ~ 16V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.97","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$5.97000","currency":"USD"},{"qty":10,"price":"$5.36000","currency":"USD"},{"qty":25,"price":"$5.06760","currency":"USD"},{"qty":100,"price":"$4.39200","currency":"USD"},{"qty":250,"price":"$4.16676","currency":"USD"},{"qty":500,"price":"$3.73882","currency":"USD"},{"qty":1000,"price":"$3.15322","currency":"USD"},{"qty":2500,"price":"$2.99556","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/47a137b3f9de909a9f45f5fdc7a1e0fd.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX1649CSA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX1649CSA 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}}