{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LT1271CQ#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LT1271CQPBF","canonicalUrl":"https://icboms.com/analog-devices/LT1271CQPBF","factsUrl":"https://icboms.com/api/mcp/products/LT1271CQ%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LT1271CQ#PBF multi-configuration switching regulator, 4A switch, 60 kHz, adjustable output, Buck/Boost/Buck-Boost/Flyback, D2PAK-5, Tube.","salesMarkdown":"## Multi-topology regulator with a 4 A switch The LT1271CQ#PBF is a current-mode switching regulator from Analog Devices that supports step-up, step-down, and step-up/step-down topologies — specifically Buck, Boost, Buck-Boost, and Flyback configurations. It delivers up to 4 A on the internal switch, rated at a 60 kHz switching frequency. The output is adjustable from a 1.244 V reference up to 60 V (switch voltage limit), and can be configured for positive or negative output polarity. Input voltage range spans 3.5 V to 30 V, suiting it for industrial and telecom rails that vary widely. ## Package and thermal footprint — D2PAK-5 Housed in a TO-263-6 / D2PAK (5 leads plus tab) surface-mount package, also referred to as DDPAK-5. The exposed tab on the bottom provides a low thermal resistance path to the PCB copper plane — critical for dissipating heat from the 4 A switch in continuous operation. Supplied in Tube packaging. The part is ROHS3 compliant per the manufacturer's lifecycle record. ## Lifecycle and sourcing posture The 60 kHz switching frequency and non-synchronous architecture (no synchronous rectifier) are fixed parameters to verify against the target load profile.","metaTitle":"LT1271CQ#PBF Analog Devices Switching Regulator, 4A, D2PAK","metaDescription":"LT1271CQ#PBF from Analog Devices — multi-configuration regulator, 4A switch, 60 kHz, D2PAK-5. Active, ROHS3 compliant. Sourced to order against RFQ.","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, Step-Up/Step-Down","Topology":"Buck, Boost, Buck-Boost, Flyback","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"TO-263-6, D2PAK (5 Leads + Tab), TO-263BA","lifecycle_stage":"eol_hot","Current - Output":"4A (Switch)","Number of Outputs":"1","Output Configuration":"Positive or Negative","Frequency - Switching":"60kHz","Operating Temperature":"0°C ~ 100°C (TA)","Synchronous Rectifier":"No","Voltage - Input (Max)":"30V","Voltage - Input (Min)":"3.5V","Voltage - Output (Max)":"60V (Switch)","Supplier Device Package":"DDPAK-5","Voltage - Output (Min/Fixed)":"1.244V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$14.66","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$14.66000","currency":"USD"},{"qty":10,"price":"$13.47000","currency":"USD"},{"qty":50,"price":"$12.91140","currency":"USD"},{"qty":100,"price":"$11.37590","currency":"USD"},{"qty":250,"price":"$10.81760","currency":"USD"},{"qty":500,"price":"$10.11970","currency":"USD"},{"qty":1000,"price":"$9.28220","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/5e7afe9d2ecc50af41026326d7515558.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What compliance documentation does Analog Devices provide for LT1271CQ#PBF?","answer":"The part is ROHS3 compliant as stated on the manufacturer's lifecycle entry."},{"question":"How can I order LT1271CQ#PBF or check availability?","answer":"Submit a quote request for current pricing and lead time — availability is confirmed at the time of quotation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LT1271CQPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LT1271CQPBF 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}}