{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPA3128D2DAPR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPA3128D2DAPR","canonicalUrl":"https://icboms.com/texas-instruments/TPA3128D2DAPR","factsUrl":"https://icboms.com/api/mcp/products/TPA3128D2DAPR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPA3128D2DAPR Class D stereo audio amplifier, 2-channel, 30W x 2 @ 8Ω, 4.5V-26V supply, 32-TSSOP exposed pad (HTSSOP), surface mount, ROHS3 compliant, active.","salesMarkdown":"## 30W per channel into 8Ω — what the output rating means for your speaker load The TPA3128D2DAPR delivers 30W x 2 into an 8Ω load per channel — that is the continuous sine-wave power before clipping, not a peak music-power number. For a typical bookshelf or ceiling speaker with 8Ω nominal impedance and 87 dB sensitivity, each channel drives to about 102 dB SPL at 1 m, enough for a small room or distributed audio zone. Class D topology means the output stage switches at high frequency (typically 400-500 kHz internal oscillator) rather than dissipating heat linearly. ## 4.5V to 26V supply — wide-rail flexibility for automotive, industrial, and consumer rails The 4.5V minimum supply means the amplifier runs from a single lithium-ion cell (3.7V nominal plus boost) or a 5V USB rail with headroom. The 26V maximum covers a 24V industrial supply with tolerance and a 12V automotive battery during charge (up to 14.4V) with margin. No external pre-regulator needed for most common rails. ## Package and thermal — the exposed-pad layout requirement The 32-TSSOP with exposed pad (0.240\", 6.10 mm width) requires the PCB land pattern to include a thermal pad on the top copper layer matching the package's exposed die-attach paddle. The datasheet recommends a 4.5 mm x 4.5 mm pad with at least nine thermal vias (0.3 mm diameter) to the ground plane on layer 2. Without this via array, the thermal resistance RθJA rises from about 35°C/W to over 60°C/W, and the part thermally limits output power at 85°C ambient. The package is surface-mount only — no through-hole variant. The 0.65 mm lead pitch is standard for TSSOP; a fine-tip soldering iron or reflow profile with peak 260°C works for rework. The exposed pad must be soldered, not just thermally coupled with grease — the electrical connection to the ground plane also carries the output return current. ## Short-circuit protection — output fault handling without external components The TPA3128D2DAPR includes short-circuit protection on the output stage — if a speaker wire shorts to ground or to the opposite channel, the amplifier shuts down the offending channel and auto-recovers after a thermal cool-down period. No external fuse or crowbar circuit required for the output stage, though the supply input should still have a bulk capacitor (typically 1000 µF per channel) to handle the inrush during recovery.","metaTitle":"TPA3128D2DAPR Class D Amp, 30W x 2 @ 8Ω, 32-HTSSOP","metaDescription":"Texas Instruments TPA3128D2DAPR Class D stereo amplifier, 30W per channel into 8Ω, 4.5-26V supply, -40°C to 85°C, active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"Class D","Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"Short Circuit Protection","Output Type":"2-Channel (Stereo)","Mounting Type":"Surface Mount","Package / Case":"32-TSSOP (0.240\\\", 6.10mm Width) Exposed Pad","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 26V","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"32-HTSSOP","Max Output Power x Channels @ Load":"30W x 2 @ 8Ohm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.1","priceTiers":[{"qty":1,"price":"$3.10000","currency":"USD"},{"qty":10,"price":"$2.78100","currency":"USD"},{"qty":25,"price":"$2.62360","currency":"USD"},{"qty":100,"price":"$2.23520","currency":"USD"},{"qty":250,"price":"$2.09880","currency":"USD"},{"qty":500,"price":"$1.83644","currency":"USD"},{"qty":1000,"price":"$1.52163","currency":"USD"},{"qty":2000,"price":"$1.48500","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/0ee73779a3222a1899db0493d461ea9c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPA3128D2DAPR/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPA3128D2DAPR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPA3128D2DAPR 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}}