{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ADP3161JR","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"ADP3161JR","canonicalUrl":"https://icboms.com/analog-devices/ADP3161JR","factsUrl":"https://icboms.com/api/mcp/products/ADP3161JR","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices ADP3161JR, 4-Bit Programmable Buck Controller, Step-Down (Buck) Topology, PWM Output, 2 Outputs / 2 Phases, Up to 2 MHz Switching Frequency, 5V/12V Supply, 0°C to 70°C, 16-SOIC Package.","salesMarkdown":"## 4-bit programmable buck controller for CPU core or chipset VRs The Analog Devices ADP3161JR is a 4-bit programmable step-down (buck) PWM controller designed for high-current voltage regulation in desktop and notebook CPU core supplies, chipset VRs, and DDR memory rails. It integrates a two-phase, two-output architecture with synchronous rectification, enabling efficient conversion at switching frequencies up to 2 MHz. The 4-bit programming interface allows dynamic output voltage selection, typically controlled by the CPU's VID logic. The controller operates from a 5 V or 12 V supply and drives external N-channel MOSFETs. ## Commercial temperature range — indoor equipment only The ADP3161JR is specified for 0°C to 70°C ambient operation. This limits its use to controlled indoor environments such as desktop PCs, servers in climate-controlled data centers, test equipment, and office appliances. It is not suitable for automotive, industrial, or outdoor applications where the ambient temperature may drop below freezing or exceed 70°C. If you need a wider temperature range, the ADP1850 and ADP1829 are rated for -40°C to 85°C.","metaTitle":"ADP3161JR 4-Bit Programmable Buck Controller, 2-Phase PWM","metaDescription":"ADI ADP3161JR step-down buck PWM controller, 2-phase, up to 2 MHz, 50% duty cycle, 5V/12V supply, 0–70°C, 16-SOIC. Active, RoHS non-compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Bulk","Function":"Step-Down","Topology":"Buck","Output Type":"PWM","Mounting Type":"Surface Mount","Output Phases":"2","Package / Case":"16-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Duty Cycle (Max)":"50%","Number of Outputs":"2","Output Configuration":"Positive","Frequency - Switching":"Up to 2MHz","Operating Temperature":"0°C ~ 70°C (TA)","Synchronous Rectifier":"Yes","Supplier Device Package":"16-SOIC","Voltage - Supply (Vcc/Vdd)":"5V, 12V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.11","stockQuantity":0,"priceTiers":[{"qty":270,"price":"$1.11000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/74d888d1cd0d83081bfbffca6cb94f38.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum duty cycle of ADP3161JR?","answer":"The maximum duty cycle is 50%. This limits the output voltage to half the input voltage in continuous conduction mode. For a 12 V input, the maximum output is about 6 V; for a 5 V input, about 2.5 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/ADP3161JR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/ADP3161JR 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}}