{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX9763EUI","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX9763EUI","canonicalUrl":"https://icboms.com/analog-devices/MAX9763EUI","factsUrl":"https://icboms.com/api/mcp/products/MAX9763EUI","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX9763EUI Class AB stereo audio power amplifier, 2-channel with headphone output, 3W x 2 @ 3Ohm, 4.5-5.5V supply, 28-TSSOP exposed pad, surface mount.","salesMarkdown":"## Output stage and load matching for the BOM The MAX9763EUI delivers 3W per channel into a 3 Ohm load from a 5V rail — that 3 Ohm figure is the design target for portable speaker drivers where the DC resistance sits near 2.8 Ohm and the voice coil impedance bottoms out at resonance. At 4 Ohm the output power drops, but the Class AB linearity stays clean through the crossover region, which matters more for midrange clarity than raw SPL. ## Supply rails and thermal envelope The 4.5V to 5.5V supply window ties it to a single 5V rail — no dual supplies, no boost converter needed for the output swing. The exposed pad on the 28-TSSOP-EP is the thermal path: the die sits on the paddle, and the PCB copper plane under it sinks the Class AB quiescent heat. At 3W into 3 Ohm the efficiency is around 55-60%, so the other 40% dissipates as heat through that pad. A 1-square-inch copper pour on the bottom layer keeps the junction below 85°C at 25°C ambient. ## Active lifecycle with a compliance catch The catch is the RoHS non-compliant marking. This part uses lead-bearing solder terminations, which exempts it from RoHS for certain equipment categories but blocks it from EU consumer goods after July 2006 and from most new industrial designs targeting RoHS-10 compliance. If your BOM requires full RoHS, the pin-compatible MAX9763EUI+ (the lead-free suffix variant) is the drop-in replacement — same package, same output stage, same thermal pad.","metaTitle":"MAX9763EUI Analog Devices Class AB Audio Amp, 3W x 2","metaDescription":"MAX9763EUI stereo Class AB audio power amplifier from Analog Devices. 3W x 2 into 3 Ohm, 4.5-5.5V supply, 28-TSSOP-EP. Active lifecycle, RoHS non-compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"Class AB","Package":"Bulk","Output Type":"2-Channel (Stereo) with Stereo Headphones","Mounting Type":"Surface Mount","Package / Case":"28-TSSOP (0.173\\\", 4.40mm Width) Exposed Pad","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"28-TSSOP-EP","Max Output Power x Channels @ Load":"3W x 2 @ 3Ohm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.08","stockQuantity":0,"priceTiers":[{"qty":145,"price":"$2.08000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/7ed306ffbb4555edfccbe3e616a390cd.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the output power of the MAX9763EUI into different speaker loads?","answer":"The datasheet headline rating is 3W per channel into a 3 Ohm load from a 5V supply. Into a 4 Ohm speaker the output power is lower — typically around 2.2W per channel — because the Class AB output stage swing is rail-limited. The 3 Ohm figure targets portable speakers with low-impedance drivers."},{"question":"What is the closest pin-compatible alternative to the MAX9763EUI?","answer":"The MAX9763EUI+ is the lead-free (RoHS-compliant) suffix variant — same 28-TSSOP-EP package, same pinout, same 3W x 2 output stage. The only difference is the termination finish: the MAX9763EUI uses lead-bearing solder, while the MAX9763EUI+ uses NiPdAu or matte tin. If your BOM requires full RoHS compliance, the + variant is the drop-in replacement without a board spin."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX9763EUI","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX9763EUI 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}}