{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LT8311HFE#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LT8311HFEPBF","canonicalUrl":"https://icboms.com/analog-devices/LT8311HFEPBF","factsUrl":"https://icboms.com/api/mcp/products/LT8311HFE%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LT8311HFE#PBF, Secondary-Side Controller, synchronous MOSFET driver, 3.7V to 30V supply, 4.5 mA supply current, -40°C to 150°C, 20-TSSOP-EP exposed pad, Tube.","salesMarkdown":"## Synchronous MOSFET driver for secondary-side control The LT8311HFE#PBF is a synchronous MOSFET driver configured as a Secondary-Side Controller, designed to drive the synchronous rectifier MOSFET on the output side of an isolated power converter. ## 150°C junction — H-grade thermal headroom The H-grade suffix in LT8311HFE#PBF denotes the -40°C to 150°C operating temperature range. ## Supply range and bias current The 3.7V to 30V supply range covers the common secondary-side bias voltages from 5V to 24V rails. The 4.5 mA supply current is the quiescent draw of the controller itself — the total load on the bias rail includes the gate charge of the external MOSFETs, which depends on switching frequency and MOSFET input capacitance. This low bias current makes the LT8311HFE#PBF suitable for self-powered secondary-side circuits where the bias is derived from the output or an auxiliary winding. ## Package and footprint The LT8311HFE#PBF is supplied in a 20-TSSOP package with exposed pad (20-TSSOP-EP), 0.173-inch body width, 4.40 mm nominal width, 16 leads plus the exposed pad. ## Lifecycle and compliance It is ROHS3 compliant.","metaTitle":"LT8311HFE#PBF MOSFET Driver, Secondary-Side Controller","metaDescription":"LT8311HFE#PBF synchronous MOSFET driver for secondary-side control. 3.7V-30V supply, 4.5 mA quiescent, -40°C to 150°C. Active production, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":[],"specifications":{"Package":"Tube","Applications":"Secondary-Side Controller","Mounting Type":"Surface Mount","Package / Case":"20-TSSOP (0.173\\\", 4.40mm Width), 16 Leads, Exposed Pad","lifecycle_stage":"eol_hot","Current - Supply":"4.5 mA","Voltage - Supply":"3.7V ~ 30V","Operating Temperature":"-40°C ~ 150°C","Supplier Device Package":"20-TSSOP-EP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$10.5","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$10.50000","currency":"USD"},{"qty":10,"price":"$9.48900","currency":"USD"},{"qty":25,"price":"$9.04800","currency":"USD"},{"qty":100,"price":"$7.85640","currency":"USD"},{"qty":250,"price":"$7.50328","currency":"USD"},{"qty":500,"price":"$6.84124","currency":"USD"},{"qty":1000,"price":"$5.95850","currency":"USD"}]},"links":{"datasheetUrl":"https://www.analog.com/media/en/technical-documentation/data-sheets/8311f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What are the direct alternatives or equivalents for LT8311HFE#PBF?","answer":"The LT8311MPFE#PBF is the military-temperature variant rated -55°C to 150°C. The LT8310HFE#PBF is a different device — a Forward Converter Controller with a 6.0V minimum supply and 3.8 mA supply current, not a direct pin-compatible substitute."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LT8311HFEPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LT8311HFEPBF 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}}