{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LT8708ELWE#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LT8708ELWEPBF","canonicalUrl":"https://icboms.com/analog-devices/LT8708ELWEPBF","factsUrl":"https://icboms.com/api/mcp/products/LT8708ELWE%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LT8708ELWE#PBF, 80V Bidirectional Buck-Boost Controller, 2-Phase, Transistor Driver Output, 64-LQFP Exposed Pad, Tray.","salesMarkdown":"## 80V bidirectional buck-boost controller, 2-phase synchronous The LT8708ELWE#PBF is an 80V bidirectional buck-boost switching regulator controller from Analog Devices. It operates from a 2.8V to 80V supply rail, making it suitable for systems that must regulate through a wide input range, such as battery-backed supplies, automotive 12V/24V/48V rails, or industrial 24V-72V bus architectures. The part uses a 2-phase, single-output topology with synchronous rectification, achieving up to 80% duty cycle. Switching frequency is programmable from 100kHz to 400kHz, with clock synchronization input available to phase-lock the converter to an external clock, reducing system-level beat-frequency noise. ## Supply range, temperature grade, and package fit The 2.8V to 80V Vcc range covers the full spectrum from a deeply discharged 3-cell Li-ion battery (≈9V) through a 48V telecom rail to a 72V industrial bus, with margin on both ends. The positive output configuration and transistor driver output allow the controller to drive external N-channel MOSFETs for both buck and boost stages. The enable control feature allows the regulator to be gated by a system supervisor or power-good signal, sequencing the output rail on and off without an external load switch. The 80% maximum duty cycle limits the boost ratio — for a given input voltage, the output cannot exceed about 5× the input (theoretical limit), but practical designs stay well below that due to inductor and switch losses. ## Active production, RoHS3, and sourcing posture The closest peer is the LT8708EUHG#PBF, which shares the same silicon (same 2.8V-80V input, same frequency range, same 2-phase synchronous topology) but ships in a tube package instead of tray. The LT8708EUHG#PBF uses a 52-QFN package (7x8mm) versus the 64-LQFP-EP (10x10mm) — the pinout and footprint differ, so a board designed for one does not accept the other without layout changes.","metaTitle":"LT8708ELWE#PBF Analog Devices Buck-Boost Controller, 80V","metaDescription":"Active-production 80V bidirectional buck-boost controller from Analog Devices. 2.8V-80V supply, 100kHz-400kHz switching, -40°C to 125°C. 64-LQFP-EP. RoHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Package":"Tray","Function":"Step-Up/Step-Down","Topology":"Buck-Boost","Clock Sync":"Yes","Output Type":"Transistor Driver","Mounting Type":"Surface Mount","Output Phases":"2","Package / Case":"64-LQFP Exposed Pad","lifecycle_stage":"eol_hot","Control Features":"Enable","Duty Cycle (Max)":"80%","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"100kHz ~ 400kHz","Operating Temperature":"-40°C ~ 125°C (TJ)","Synchronous Rectifier":"Yes","Supplier Device Package":"64-LQFP-EP (10x10)","Voltage - Supply (Vcc/Vdd)":"2.8V ~ 80V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$15.31","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$15.31000","currency":"USD"},{"qty":10,"price":"$14.07400","currency":"USD"},{"qty":25,"price":"$13.49040","currency":"USD"},{"qty":160,"price":"$11.88631","currency":"USD"},{"qty":320,"price":"$11.30291","currency":"USD"},{"qty":480,"price":"$10.57369","currency":"USD"},{"qty":960,"price":"$9.69863","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/4712a7d77830779f8906df8a2b704b3a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional second-source to LT8708ELWE#PBF?","answer":"The LT8708EUHG#PBF is the closest peer — same 80V bidirectional buck-boost controller, same 2.8V-80V supply range, same 2-phase synchronous topology, same 100kHz-400kHz switching frequency. The key difference is package: the ELWE variant is a 64-LQFP-EP (10x10mm) in tray, while the EUHG variant is a 52-QFN (7x8mm) in tube. They are not pin-compatible; a board designed for one package cannot accept the other without a layout revision."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LT8708ELWEPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LT8708ELWEPBF 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}}