{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPA321D","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPA321D","canonicalUrl":"https://icboms.com/texas-instruments/TPA321D","factsUrl":"https://icboms.com/api/mcp/products/TPA321D","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPA321D Class AB audio amplifier, 1-Channel (Mono), 700mW x 1 @ 8Ohm, 2.5V ~ 5.5V supply, 8-SOIC package, Tube.","salesMarkdown":"## 700mW into 8Ω — what that means for your speaker load The TPA321D delivers 700 mW continuous into an 8 Ω load from a single 5 V supply — enough to drive a small speaker or earpiece in a portable device without an external boost converter. The Class AB output stage keeps crossover distortion low at low signal levels, so the audio quality holds up at the quiet passages, not just at full output. ## Protection and shutdown features On-chip short-circuit and thermal protection prevent damage if the output is accidentally shorted or the die overheats — the amplifier shuts down and recovers when the fault clears. A dedicated shutdown pin lets a microcontroller or GPIO put the output into a high-impedance state, cutting supply current to near zero during system sleep.","metaTitle":"Texas Instruments TPA321D Class AB Audio Amp, 700mW, 8-SOIC","metaDescription":"Texas Instruments TPA321D Class AB audio amplifier, 700mW into 8Ω, 2.5-5.5V supply, 8-SOIC. Active production, ROHS3 compliant. Request a quote.","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":"Differential Inputs, Short-Circuit and Thermal Protection, Shutdown","Output Type":"1-Channel (Mono)","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"2.5V ~ 5.5V","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"8-SOIC","Max Output Power x Channels @ Load":"700mW x 1 @ 8Ohm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.43","priceTiers":[{"qty":1,"price":"$1.43000","currency":"USD"},{"qty":10,"price":"$1.27900","currency":"USD"},{"qty":25,"price":"$1.21400","currency":"USD"},{"qty":100,"price":"$0.99710","currency":"USD"},{"qty":250,"price":"$0.93212","currency":"USD"},{"qty":500,"price":"$0.82372","currency":"USD"},{"qty":1000,"price":"$0.65031","currency":"USD"},{"qty":2500,"price":"$0.61350","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/928d825f10311b41c00043e179555c6e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPA321D/alternatives.json"},"ai":{"faq":[{"question":"What is the output power of TPA321D into 8 ohms?","answer":"The TPA321D delivers 700 mW continuous into an 8 Ω load from a 5 V supply."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPA321D","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPA321D 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}}