{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LT8708ILWE#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LT8708ILWEPBF","canonicalUrl":"https://icboms.com/analog-devices/LT8708ILWEPBF","factsUrl":"https://icboms.com/api/mcp/products/LT8708ILWE%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LT8708ILWE#PBF 80V bidirectional buck-boost controller, 2.8V to 80V supply, 100kHz to 400kHz switching, 64-LQFP exposed pad, tray.","salesMarkdown":"## 80V bidirectional buck-boost — the input range decides the system The LT8708ILWE#PBF is an 80V bidirectional buck-boost controller from Analog Devices, built for systems where the input rail swings above and below the output. The 2.8V to 80V supply range covers multi-cell battery stacks, 12V/24V automotive nets with cold-crank dips, and industrial 48V rails — all without a pre-regulator. It regulates a single positive output using a 2-phase buck-boost topology with synchronous rectification, which means the low-side FETs also conduct — efficiency holds up across the full input-to-output ratio, not just in buck or boost mode alone. ## Switching frequency and duty cycle — sizing the magnetics A 100kHz design uses a larger inductor but keeps switching losses low; 400kHz shrinks the magnetics at the cost of higher FET gate-drive dissipation. The 80% max duty cycle caps the step-down ratio — at 5V input, the minimum achievable output is about 6.25V before the controller skips cycles. The 64-LQFP exposed pad package is the thermal interface for the controller's internal gate-drive losses. The PCB layout must connect the pad to a copper plane — the datasheet's recommended footprint and via pattern are not optional for full load operation at 125°C junction temperature. ## Lifecycle and compliance — design-in safe, no EOL clock ticking ROHS3 compliant, so it clears EU and global regulatory requirements without an exemption expiry. For a BOM that already uses the LT8708EUHG#PBF, the ILWE variant is the same silicon in a tray-packed LQFP instead of tube — the electrical ratings are identical, so no re-spin is needed. The only difference is the shipping medium and the package marking.","metaTitle":"LT8708ILWE#PBF Buck-Boost Controller, 80V, 2.8-80V Input","metaDescription":"Analog Devices LT8708ILWE#PBF 80V bidirectional buck-boost controller. 2.8V to 80V input, 100-400kHz switching, 64-LQFP-EP. Active, ROHS3. Quoted to order.","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":"$16.9","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$16.90000","currency":"USD"},{"qty":10,"price":"$15.53600","currency":"USD"},{"qty":25,"price":"$14.89200","currency":"USD"},{"qty":160,"price":"$13.12100","currency":"USD"},{"qty":320,"price":"$12.47703","currency":"USD"},{"qty":480,"price":"$11.67206","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/4712a7d77830779f8906df8a2b704b3a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between LT8708ILWE#PBF and LT8708EUHG#PBF?","answer":"Both are the same 80V bidirectional buck-boost controller die. The ILWE variant ships in a tray-packed 64-LQFP-EP, while the EUHG variant comes in tube packaging. Electrical specifications are identical — the choice is a logistics decision, not a design one."},{"question":"What supply voltage range does LT8708ILWE#PBF support?","answer":"The Vcc/Vdd range is 2.8V to 80V. This covers single-cell Li-ion up to 80V industrial buses. The controller regulates a single positive output using a buck-boost topology, so the output can be above, below, or equal to the input."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LT8708ILWEPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LT8708ILWEPBF 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}}