{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LMP8640MKX-F/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LMP8640MKX-F-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LMP8640MKX-F-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LMP8640MKX-F%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LMP8640MKX-F/NOPB, Current Sense Amplifier, 1 Circuit, 450 kHz GBW, 1.8 V/µs Slew Rate, 2.7 V to 12 V Supply, SOT-23-6, -40°C to 125°C.","salesMarkdown":"## 450 kHz gain-bandwidth — what it buys the current-sense node Its 450 kHz gain-bandwidth product and 1.8 V/µs slew rate let it track DC load current and low-frequency ripple in power supplies and motor drives, but it won't resolve fast switching edges — the bandwidth is sized for average and peak current monitoring, not high-speed overcurrent detection. Quiescent supply current is 2.3 mA typical. That's modest for a precision current sense amp — it won't strain a 3.3 V linear regulator in a 24 V/7 industrial PSU, but it's too high for a battery-powered sensor node running on a coin cell. The input bias current of 13 µA is higher than a zero-drift alternative; factor that into the shunt resistor value if you're measuring microamp-level loads. Input offset voltage is 900 µV, which at a 50 mV full-scale shunt drop gives about 1.8% error — acceptable for load monitoring but not for a billing-grade meter. ## SOT-23-6 Thin — footprint and rework The thin profile helps in tight enclosures, but the small pad geometry means the usual hot-air rework profile for a standard SOT-23-6 works fine — just watch the ramp rate to avoid tombstoning. Mounting is surface mount only.","metaTitle":"LMP8640MKX-F/NOPB Current Sense Amplifier, 450 kHz, SOT-23-6","metaDescription":"TI LMP8640MKX-F/NOPB current sense amplifier: 450 kHz GBW, 1.8 V/µs slew rate, 2.7 V to 12 V supply, -40°C to 125°C, SOT-23-6. Active, RoHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Slew Rate":"1.8V/µs","Mounting Type":"Surface Mount","Amplifier Type":"Current Sense","Package / Case":"SOT-23-6 Thin, TSOT-23-6","lifecycle_stage":"eol_hot","Current - Supply":"2.3mA","Number of Circuits":"1","Current - Input Bias":"13 µA","Operating Temperature":"-40°C ~ 125°C","Gain Bandwidth Product":"450 kHz","Voltage - Input Offset":"900 µV","Supplier Device Package":"SOT-23-THIN","Voltage - Supply Span (Max)":"12 V","Voltage - Supply Span (Min)":"2.7 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.7","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.70000","currency":"USD"},{"qty":10,"price":"$2.42400","currency":"USD"},{"qty":25,"price":"$2.28680","currency":"USD"},{"qty":100,"price":"$1.94850","currency":"USD"},{"qty":250,"price":"$1.82956","currency":"USD"},{"qty":500,"price":"$1.60086","currency":"USD"},{"qty":1000,"price":"$1.32643","currency":"USD"},{"qty":3000,"price":"$1.29450","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/c490500848acde6f411d6c5167ca3d57.pdf","sourceUrl":null},"ai":{"faq":[{"question":"When sourcing LMP8640MKX-F/NOPB, what's the closest functional second-source?","answer":"Its gain-bandwidth is 350 kHz versus 450 kHz, and it draws 1.8 mA supply current versus 2.3 mA. The package differs — the INA254A1IPWAR comes in a different footprint — so the board layout would need a spin. No pin-compatible drop-in exists."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LMP8640MKX-F-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/LMP8640MKX-F-NOPB when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}