{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MCP73811T-420I/OT","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"MCP73811T-420I-OT","canonicalUrl":"https://icboms.com/microchip/MCP73811T-420I-OT","factsUrl":"https://icboms.com/api/mcp/products/MCP73811T-420I%2FOT","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology MCP73811T-420I/OT linear charge management controller, single-cell Li-Ion/Polymer, 4.2V battery pack voltage, 450mA max charge current, SOT-23-5, Tape & Reel.","salesMarkdown":"## Single-cell Li-Ion/Polymer linear charge controller — 4.2V termination at 450mA The MCP73811T-420I/OT: This is a constant-current linear charge controller for single-cell Lithium Ion or Lithium Polymer batteries. It terminates at 4.2V and delivers up to 450mA charge current. The linear topology means no switching noise — a clean charging profile for noise-sensitive portable devices like wearables, IoT sensors, and handheld instruments. Maximum supply voltage is 6V, so the part runs directly from a standard 5V USB bus or a regulated 5V rail without an external LDO ahead of it. ## SOT-23-5 package — small footprint for space-constrained boards Surface-mount with a 5-pin footprint — the board area is minimal, making it a natural fit for compact single-cell battery designs where every mm² counts. ## ROHS3 compliance and packaging options The part is ROHS3 compliant, which satisfies EU RoHS Directive 2011/65/EU and its amendment 2015/863 — no exemption-based paperwork needed for European BOMs. The reel option suits production pick-and-place; cut tape works for prototype quantities without committing to a full reel.","metaTitle":"MCP73811T-420I/OT Li-Ion Charge Controller, 450mA, SOT-23-5","metaDescription":"Active Microchip single-cell Li-Ion/Polymer linear charge controller. 4.2V termination, 450mA max, SOT-23-5, -40 to 85°C. ROHS3. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Mounting Type":"Surface Mount","Package / Case":"SC-74A, SOT-753","Number of Cells":"1","lifecycle_stage":"eol_hot","Battery Chemistry":"Lithium Ion/Polymer","Current - Charging":"Constant","Battery Pack Voltage":"4.2V","Charge Current - Max":"450mA","Operating Temperature":"-40°C ~ 85°C (TA)","Voltage - Supply (Max)":"6V","Supplier Device Package":"SOT-23-5"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.69","priceTiers":[{"qty":1,"price":"$0.69000","currency":"USD"},{"qty":25,"price":"$0.58320","currency":"USD"},{"qty":100,"price":"$0.53000","currency":"USD"},{"qty":3000,"price":"$0.53000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/e20740814f474e8ad5561ef3902b28a9.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/MCP73811T-420I%2FOT/alternatives.json"},"ai":{"faq":[{"question":"What battery chemistry and cell count does this charger support?","answer":"It is designed for single-cell Lithium Ion or Lithium Polymer batteries, with a 4.2V termination voltage and a maximum charge current of 450mA."},{"question":"What package does the MCP73811T-420I/OT come in?","answer":"The package is SC-74A / SOT-753, with the supplier device package listed as SOT-23-5."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/MCP73811T-420I-OT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/MCP73811T-420I-OT 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}}