{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MCP1631V-E/ML","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"MCP1631V-E-ML","canonicalUrl":"https://icboms.com/microchip/MCP1631V-E-ML","factsUrl":"https://icboms.com/api/mcp/products/MCP1631V-E%2FML","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology MCP1631V-E/ML Sepic controller IC, step-up/step-down function, 3V~5.5V supply, transistor driver output, 20-VFQFN exposed pad, tube.","salesMarkdown":"## Sepic controller for non-isolated power stages The MCP1631V-E/ML is a step-up/step-down controller IC built around the Sepic topology — it regulates an output voltage that can be above, below, or equal to the input, without a transformer. The single-output, positive-configuration transistor driver targets non-isolated DC-DC converters where a wide input range and a single inductor pair keep the BOM lean. The -40°C to 125°C junction temperature rating covers under-hood and factory-floor ambient extremes without derating. Housed in a 20-VFQFN exposed-pad package (supplier device package 20-QFN, 4x4 mm), the part mounts on a standard surface-mount footprint. Shipping in tube format; no reel or tape options are listed for this order code, so plan for manual or tube-fed pick-and-place handling. ## Control features for loop tuning The controller includes Enable, Frequency Control, and Ramp adjustment pins — these let the designer set the switching frequency, soft-start profile, and compensation ramp without external op-amps. No clock sync input is provided, so the switching frequency is free-running and may beat against an external clock if one is present in the system. Synchronous rectification is not built in — the external transistor driver switches a single N-channel MOSFET on the primary side; the rectifier diode is external. This keeps the controller-side pin count low but places the Schottky selection in the BOM engineer's hands.","metaTitle":"MCP1631V-E/ML Sepic Controller, 3V~5.5V, 20-QFN","metaDescription":"Microchip MCP1631V-E/ML Sepic step-up/step-down controller IC. Active, ROHS3. 3V~5.5V supply, -40°C~125°C, 20-QFN. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tube","Function":"Step-Up/Step-Down","Topology":"Sepic","Clock Sync":"No","Output Type":"Transistor Driver","Mounting Type":"Surface Mount","Output Phases":"1","Package / Case":"20-VFQFN Exposed Pad","lifecycle_stage":"eol_hot","Control Features":"Enable, Frequency Control, Ramp","Number of Outputs":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C (TJ)","Synchronous Rectifier":"No","Supplier Device Package":"20-QFN (4x4)","Voltage - Supply (Vcc/Vdd)":"3V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.0","priceTiers":[{"qty":1,"price":"$2.00000","currency":"USD"},{"qty":25,"price":"$1.66440","currency":"USD"},{"qty":100,"price":"$1.51580","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8487769c6b438ae001a304982e26bfb8.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/MCP1631V-E%2FML/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/MCP1631V-E-ML","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/MCP1631V-E-ML when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}