{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MCP73834T-FCI/MF","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"MCP73834T-FCI-MF","canonicalUrl":"https://icboms.com/microchip/MCP73834T-FCI-MF","factsUrl":"https://icboms.com/api/mcp/products/MCP73834T-FCI%2FMF","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology MCP73834T-FCI/MF, single-cell Li-Ion/Polymer battery charge controller, 1.1A max charge current, 4.2V pack voltage, 10-VFDFN Exposed Pad, Tape & Reel.","salesMarkdown":"## Single-cell Li-Ion charge controller with programmable current The MCP73834T-FCI/MF from Microchip Technology is a linear charge management controller for single-cell Lithium Ion or Lithium Polymer packs, delivering up to 1.1 A charge current with a regulated 4.2 V battery termination voltage. Charge current is programmable via an external resistor, giving the BOM engineer direct control over the charge rate to match cell capacity and thermal budget without changing the IC. ## Thermal and package constraints for board integration Housed in a 10-VFDFN with exposed pad (3x3 mm DFN per supplier device package), the part relies on the PCB copper pour under the pad for heat sinking — the thermal path from the die to the board determines the practical charge current ceiling in a given ambient. Supply voltage max is 6 V, so the input rail must be regulated — a 5 V USB bus or a 5 V regulated wall adapter is typical; unregulated 9-12 V supplies need a pre-regulator. The part is ROHS3 compliant, suitable for designs requiring lead-free assembly and EU RoHS exemption-free compliance.","metaTitle":"MCP73834T-FCI/MF Li-Ion Charger IC, 1.1A, 10-DFN","metaDescription":"Microchip MCP73834T-FCI/MF single-cell Li-Ion/Polymer charger, 1.1A max, programmable current, over-temp protection, -40 to 85°C, 10-DFN. Active, ROHS3.","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":"10-VFDFN Exposed Pad","Number of Cells":"1","lifecycle_stage":"eol_hot","Fault Protection":"Over Temperature","Battery Chemistry":"Lithium Ion/Polymer","Current - Charging":"Constant - Programmable","Battery Pack Voltage":"4.2V","Charge Current - Max":"1.1A","Operating Temperature":"-40°C ~ 85°C (TA)","Programmable Features":"Current","Voltage - Supply (Max)":"6V","Supplier Device Package":"10-DFN (3x3)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.14","priceTiers":[{"qty":1,"price":"$1.14000","currency":"USD"},{"qty":25,"price":"$0.97520","currency":"USD"},{"qty":100,"price":"$0.90000","currency":"USD"},{"qty":3300,"price":"$0.90000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/658f1c3b0994fbb389ca41da22c6da0b.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/MCP73834T-FCI%2FMF/alternatives.json"},"ai":{"faq":[{"question":"What is the charge current accuracy and how is it set?","answer":"Charge current is constant and programmable via an external resistor, with a maximum of 1.1 A. The resistor value sets the current; the datasheet provides the formula and typical accuracy over temperature."},{"question":"Does the MCP73834T-FCI/MF include over-temperature protection?","answer":"Yes, the IC integrates over-temperature fault protection, which reduces or terminates charge if the die temperature exceeds the safe operating limit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/MCP73834T-FCI-MF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/MCP73834T-FCI-MF 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}}