{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TDA7563B","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"TDA7563B","canonicalUrl":"https://icboms.com/stmicroelectronics/TDA7563B","factsUrl":"https://icboms.com/api/mcp/products/TDA7563B","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics TDA7563B, Class AB Quad Audio Amplifier, 75W x 4 @ 2Ω, 8V-18V Supply, 27-Flexiwatt (Vertical) Through Hole, I²C Control, Active.","salesMarkdown":"## 75W x 4 @ 2Ω — the power budget drives the thermal design The TDA7563B delivers 75W per channel into a 2Ω load across all four channels — that's 300W total output power. In a Class AB topology, dissipation at full output is roughly 50-60% of output power, so the heatsink must handle 150-180W continuous. Supply range is 8V to 18V, covering both a nominal 12V automotive bus and the 14.4V charging voltage. The 150°C junction temperature rating means the die can survive a stalled cooling fan or a summer dashboard soak, but the long-term reliability at those extremes depends on keeping the junction below 125°C in normal operation — the 75W rating assumes a heatsink that holds the case temperature below 85°C. ## I²C diagnostics and protection — what the bus tells you The I²C interface exposes diagnostic registers for short-circuit, thermal warning, and DC offset detection. On power-up, the mute pin holds the outputs quiet until the I²C bus initializes and clears the mute bit — this prevents the power-on thump from reaching the speakers. The standby mode drops quiescent current to microamps, which matters for ignition-off battery drain in automotive head units. Short-circuit protection is per-channel and latched — a fault on one output mutes that channel but leaves the other three running. The thermal protection thresholds are factory-set at 150°C (shutdown) with a 20°C hysteresis. The I²C status register reads back which channel tripped, so the system controller can log the fault or retry after a cool-down period. ## Active lifecycle — no LTB clock ticking For a BOM that needs this exact Flexiwatt footprint and pinout, the supply channel is standard distribution — no premium for EOL risk. The part is sourced to order against an RFQ through independent and authorized distribution. The ROHS3 compliance covers the full substance restriction list (including DEHP, BBP, DBP, DIBP) — no exemption declarations needed for EU market shipments.","metaTitle":"ST TDA7563B Class AB Amplifier, 75W x 4 @ 2Ω, 27-Flexiwatt","metaDescription":"STMicroelectronics TDA7563B Class AB quad audio amp, 75W x 4 @ 2Ω, 8-18V supply, -55 to 150°C, I²C control. Active, ROHS3. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"Class AB","Package":"Tube","Features":"I²C, Mute, Short-Circuit and Thermal Protection, Standby","Output Type":"4-Channel (Quad)","Mounting Type":"Through Hole","Package / Case":"27-Flexiwatt (Formed Leads)","lifecycle_stage":"eol_hot","Voltage - Supply":"8V ~ 18V","Operating Temperature":"-55°C ~ 150°C (TJ)","Supplier Device Package":"27-Flexiwatt (Vertical)","Max Output Power x Channels @ Load":"75W x 4 @ 2Ohm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11.41","priceTiers":[{"qty":1,"price":"$11.41000","currency":"USD"},{"qty":10,"price":"$10.48700","currency":"USD"},{"qty":25,"price":"$10.05200","currency":"USD"},{"qty":100,"price":"$8.97050","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/b4a58c5b79c669b47006c33a4e5b7e9f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TDA7563B/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for TDA7563B?","answer":"The TDA7563BH is a peer part with identical power output (75W x 4 @ 2Ω), the same feature set (I²C, mute, short-circuit and thermal protection, standby), and the same 27-Flexiwatt package. It is functionally equivalent and can drop into the same PCB layout without rewiring, provided the BOM accepts the BH suffix variant."},{"question":"What compliance documentation does STMicroelectronics provide for TDA7563B?","answer":"The TDA7563B is ROHS3 Compliant per ST's lifecycle record. Standard documentation includes the datasheet, ROHS declaration of conformity, and material declaration."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/TDA7563B","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/TDA7563B 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}}