{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM380N-8/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM380N-8-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM380N-8-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM380N-8%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM380N-8/NOPB Class AB audio power amplifier, mono 1-channel, 2.5W into 8Ω, 10V-22V supply, 8-DIP through-hole package, short-circuit and thermal protection.","salesMarkdown":"## 2.5W mono into 8Ω — the headline fit decision The LM380N-8/NOPB delivers 2.5W into an 8Ω load from a single supply rail — this is the output power that governs the loudspeaker selection and the enclosure's acoustic budget. For a desktop speaker or intercom, 2.5W is enough for moderate listening levels; for a portable PA or outdoor announcement system, it will clip before reaching room-filling volume. The supply range spans 10V to 22V, so it runs off a common 12V or 18V DC wall adapter without a separate regulator. At the low end, output swing is limited; at 22V the device reaches its maximum undistorted swing into the rated load. Class AB operation means the output stage biases into a low-current conduction region, avoiding the crossover distortion of Class B while keeping quiescent dissipation lower than a pure Class A stage. For a 2.5W output, expect a heatsink on the 8-DIP package if the ambient exceeds 50°C — the thermal resistance of the plastic DIP without a copper plane is around 100°C/W junction-to-ambient. Built-in short-circuit and thermal protection eliminate the need for an external current-limit resistor or a thermal cutoff. The thermal shutdown threshold is typically 150°C junction; the amplifier recovers automatically when the die cools, which is useful in a fault-tolerant design but means the load fault must be cleared before the part cycles back on. This part is not qualified for automotive or outdoor enclosures that see sub-zero startups or sustained heat above 70°C ambient. ## 8-DIP through-hole — board-fit and sourcing reality The 8-pin DIP package (0.300-inch row spacing, 7.62 mm body width) is a legacy through-hole footprint. It is straightforward to hand-solder or wave-solder, but it occupies more board area than an equivalent SOIC-8 surface-mount amplifier. For a new design where board space is tight, consider the surface-mount variant LM380N-8/SO or a smaller Class D alternative; for a repair or a low-volume build, the DIP is easier to work with and swap. The LM380N-8/NOPB is the lead-free (NOPB) version of the original LM380N. The suffix confirms it is the same die in the same package, just with ROHS-compliant plating. If your BOM calls out the older LM380N, this part is a drop-in replacement — no board changes needed.","metaTitle":"Texas Instruments LM380N-8/NOPB Audio Amplifier, 2.5W Mono","metaDescription":"Texas Instruments LM380N-8/NOPB Class AB audio amplifier, 2.5W mono output into 8Ω, 10-22V supply, 8-DIP through-hole package. Active lifecycle, ROHS3","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":"Short-Circuit and Thermal Protection","Output Type":"1-Channel (Mono)","Mounting Type":"Through Hole","Package / Case":"8-DIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Voltage - Supply":"10V ~ 22V","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"8-PDIP","Max Output Power x Channels @ Load":"2.5W x 1 @ 8Ohm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.14","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.14000","currency":"USD"},{"qty":10,"price":"$1.92700","currency":"USD"},{"qty":25,"price":"$1.81760","currency":"USD"},{"qty":100,"price":"$1.54870","currency":"USD"},{"qty":250,"price":"$1.45416","currency":"USD"},{"qty":500,"price":"$1.27240","currency":"USD"},{"qty":1000,"price":"$1.05427","currency":"USD"},{"qty":2500,"price":"$1.02890","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/d4dc4e1c5b53a03227bc344f6e1e183f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can LM380N-8/NOPB be used as a replacement for LM380N?","answer":"Yes — the LM380N-8/NOPB is the lead-free (NOPB) version of the original LM380N. Same die, same 8-DIP package, same pinout. It is a direct drop-in replacement for any BOM line that calls out the older LM380N."},{"question":"What is the output power of LM380N-8/NOPB?","answer":"The LM380N-8/NOPB delivers 2.5W into an 8Ω load from a single supply rail. This is the maximum continuous output power before clipping, specified at the rated supply voltage and load impedance."},{"question":"Can LM380N-8/NOPB be used in bridge mode?","answer":"The LM380N-8/NOPB is a single-channel mono amplifier with a single-ended output — bridging would require two devices and external phase-inversion circuitry, which is not a supported operating mode."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM380N-8-NOPB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM380N-8-NOPB 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}}