{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LT3752EFE#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LT3752EFE~4PBF","canonicalUrl":"https://icboms.com/analog-devices/LT3752EFE~4PBF","factsUrl":"https://icboms.com/api/mcp/products/LT3752EFE%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LT3752EFE#PBF forward converter PWM controller, 6.5V to 100V supply, 100kHz to 500kHz switching, 95% duty cycle, synchronous rectifier drive, 38-TSSOP-EP exposed pad, tube.","salesMarkdown":"## 6.5V to 100V input — wide-bus forward controller The LT3752EFE#PBF is a current-mode PWM controller for isolated forward converters, accepting a supply rail from 6.5V up to 100V. That 100V ceiling covers 48V telecom buses with margin for transients, 72V railway batteries, and 24V industrial rails without an external pre-regulator. Switching frequency is programmable from 100kHz to 500kHz, letting the designer trade transformer size against core loss. The 95% maximum duty cycle supports high step-down ratios — useful when a 100V input must produce a 3.3V or 5V output without an intermediate bus. ## Synchronous rectifier drive and isolation capability The controller includes a synchronous rectifier driver output, which eliminates the Schottky catch diode in the secondary — improves efficiency by 3-5% in a typical 50W forward converter. The output configuration is positive, isolation capable, meaning the controller drives a primary-side transistor while the secondary-side synchronous rectifier can be referenced to the isolated output ground. Control features include Enable, Frequency Control, and Soft Start. The soft-start pin ramps the duty cycle on power-up, preventing output overshoot and inrush current through the transformer. Frequency control allows synchronization to an external clock via the Clock Sync input. ## 38-TSSOP-EP — thermal and footprint considerations Housed in a 38-lead TSSOP with exposed pad, the package measures 4.40mm wide with 0.173\" (4.40mm) body length. The 125°C ceiling is the absolute junction limit — actual case temperature will be lower depending on the copper area and airflow. The sibling LT3752HFE#PBF extends this to 150°C for higher ambient applications.","metaTitle":"LT3752EFE#PBF Forward Controller, 6.5-100V, 38-TSSOP","metaDescription":"Active Analog Devices LT3752EFE#PBF forward converter controller, 6.5V-100V supply, 100-500kHz, -40°C to 125°C, 38-TSSOP-EP. ROHS3. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Tube","Function":"Step-Up/Step-Down","Topology":"Forward Converter","Clock Sync":"Yes","Output Type":"Transistor Driver","Mounting Type":"Surface Mount","Output Phases":"1","Package / Case":"38-TFSOP (0.173\\\", 4.40mm Width) 31 Leads, Exposed Pad","lifecycle_stage":"eol_hot","Control Features":"Enable, Frequency Control, Soft Start","Duty Cycle (Max)":"95%","Number of Outputs":"1","Output Configuration":"Positive, Isolation Capable","Frequency - Switching":"100kHz ~ 500kHz","Operating Temperature":"-40°C ~ 125°C (TJ)","Synchronous Rectifier":"Yes","Supplier Device Package":"38-TSSOP-EP","Voltage - Supply (Vcc/Vdd)":"6.5V ~ 100V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$10.27","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$10.27000","currency":"USD"},{"qty":10,"price":"$9.27600","currency":"USD"},{"qty":25,"price":"$8.84400","currency":"USD"},{"qty":100,"price":"$7.67930","currency":"USD"},{"qty":250,"price":"$7.33416","currency":"USD"},{"qty":500,"price":"$6.68700","currency":"USD"},{"qty":1000,"price":"$6.10500","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/97c3fc57cedd094ee87473634f2876ec.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between LT3752EFE#PBF and LT3752HFE#PBF?","answer":"The LT3752HFE#PBF is the same forward controller with identical pinout and function, but rated for a 150°C maximum junction temperature instead of 125°C. The LT3752EFE#PBF is the standard temperature grade; the HFE variant is for higher ambient applications. Both share the same 38-TSSOP-EP footprint."},{"question":"What compliance documentation does Analog Devices provide for LT3752EFE#PBF?","answer":"Analog Devices provides a datasheet, ROHS3 compliance certificate, and a material declaration. The part is ROHS3 compliant (exemption-free) and REACH-compliant per ADI standard documentation. No UL or IEC certification is listed for this controller IC."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LT3752EFE~4PBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LT3752EFE~4PBF 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}}