{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC3559EUD-1#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC3559EUD-1~4PBF","canonicalUrl":"https://icboms.com/analog-devices/LTC3559EUD-1~4PBF","factsUrl":"https://icboms.com/api/mcp/products/LTC3559EUD-1%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC3559EUD-1#PBF Li-Ion/Polymer battery charger IC, 1-cell, 950mA max charge current, USB interface, 16-WFQFN exposed pad, surface mount, bulk.","salesMarkdown":"The LTC3559EUD-1#PBF comes in a 16-WFQFN exposed pad package (3x3 mm body), surface-mount only. The exposed pad under the QFN needs a thermal land on the PCB with vias to a ground plane — without it the charge current rating at 85°C ambient drops. No lab bench required for a field swap if the pad is pre-tinned and the board has a solder stencil; hot-air rework is the tool here, not a soldering iron. It is a single-cell Lithium Ion/Polymer charger with a programmable constant-current profile, maxing out at 950 mA. The USB interface means it negotiates power from a standard USB port — the supply voltage tops out at 5.5 V, so a 5 V rail is fine, but a 5 V wall wart that drifts above 5.5 V will hit the abs-max. Analog Devices lists this part as Active.","metaTitle":"LTC3559EUD-1#PBF Li-Ion Charger, 950mA, 16-QFN","metaDescription":"Active LTC3559EUD-1#PBF Li-Ion charger IC, 950mA max charge current, USB interface, 16-QFN. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Package":"Bulk","Interface":"USB","Mounting Type":"Surface Mount","Package / Case":"16-WFQFN Exposed Pad","Number of Cells":"1","lifecycle_stage":"eol_hot","Battery Chemistry":"Lithium Ion/Polymer","Current - Charging":"Constant - Programmable","Battery Pack Voltage":"4.2V","Charge Current - Max":"950mA","Operating Temperature":"-40°C ~ 85°C (TA)","Voltage - Supply (Max)":"5.5V","Supplier Device Package":"16-QFN (3x3)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.98","priceTiers":[{"qty":76,"price":"$3.98000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/f586cabb55bb1e9dc2ffc2ad0b696d06.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LTC3559EUD-1%23PBF/alternatives.json"},"ai":{"faq":[{"question":"Will LTC3559EUD-1#PBF drop into a board designed for LTC3559EUD#PBF?","answer":"The LTC3559EUD#PBF shares the same package (16-WFQFN), same pin count, and same USB interface. The key difference is the suffix — the -1 variant is a specific programming option. Functionally they are interchangeable in the same footprint, but check the charge current programming resistor value on the BOM to confirm the target current matches."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC3559EUD-1~4PBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LTC3559EUD-1~4PBF 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}}