{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"INA281B1QDBVRQ1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"INA281B1QDBVRQ1","canonicalUrl":"https://icboms.com/texas-instruments/INA281B1QDBVRQ1","factsUrl":"https://icboms.com/api/mcp/products/INA281B1QDBVRQ1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments INA281B1QDBVRQ1, Automotive AEC-Q100 Current Sense Amplifier, 1 Circuit, 2.5 V/µs Slew Rate, 1.3 MHz Gain Bandwidth, 2.7 V to 20 V Supply, SOT-23-5, -40°C to 125°C.","salesMarkdown":"With a gain-bandwidth product of 1.3 MHz, this amplifier supports DC and low-frequency AC current monitoring — adequate for load current, battery charge/discharge, and motor phase current sensing where the bandwidth of interest is below a few hundred kilohertz. The 100 µV input offset voltage sets the floor for the minimum measurable shunt voltage; at a 10 mΩ shunt, that offset corresponds to a 10 mA zero-current error, which must be budgeted in the system accuracy calculation. The slew rate of 2.5 V/µs limits the output rise time for large-signal steps. For a 2 V output swing, the rise time is approximately 0.8 µs, which is fast enough for overcurrent detection in most automotive loads but not for sub-microsecond fault response. ## Supply current and package — board-level fit Quiescent supply current is 1.5 mA typical — moderate for a current-sense amplifier, not a low-power part. The device is available in a 5-pin SOT-23-5 (SC-74A) package, a small footprint that fits space-constrained automotive modules such as battery management systems, motor controllers, and solenoid drivers. Surface-mount assembly is standard; no exposed thermal pad, so power dissipation is limited to the package's junction-to-ambient thermal resistance. For production programs requiring a qualified automotive-grade current-sense amplifier, this part is a stable, long-availability choice.","metaTitle":"INA281B1QDBVRQ1 Current Sense Amplifier, AEC-Q100, SOT-23-5","metaDescription":"TI INA281B1QDBVRQ1 automotive current sense amplifier, AEC-Q100 qualified, 2.7 V to 20 V supply, 1.3 MHz bandwidth, SOT-23-5.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q100","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Series":"Automotive, AEC-Q100","Package":"Tape & Reel (TR); Cut Tape (CT)","Slew Rate":"2.5V/µs","Mounting Type":"Surface Mount","Amplifier Type":"Current Sense","Package / Case":"SC-74A, SOT-753","lifecycle_stage":"eol_hot","Current - Supply":"1.5mA","Number of Circuits":"1","Current - Input Bias":"20 µA","Operating Temperature":"-40°C ~ 125°C (TA)","Gain Bandwidth Product":"1.3 MHz","Voltage - Input Offset":"100 µV","Supplier Device Package":"SOT-23-5","Voltage - Supply Span (Max)":"20 V","Voltage - Supply Span (Min)":"2.7 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.1","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.10000","currency":"USD"},{"qty":10,"price":"$2.78400","currency":"USD"},{"qty":25,"price":"$2.62600","currency":"USD"},{"qty":100,"price":"$2.23750","currency":"USD"},{"qty":250,"price":"$2.10092","currency":"USD"},{"qty":500,"price":"$1.83830","currency":"USD"},{"qty":1000,"price":"$1.52317","currency":"USD"},{"qty":3000,"price":"$1.48650","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/b82cbcbf3ceab6a02980fec247ad6f53.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is INA281B1QDBVRQ1 obsolete?","answer":"No. It remains a current-production part suitable for new designs."},{"question":"Is INA281B1QDBVRQ1 automotive qualified?","answer":"Yes. The INA281B1QDBVRQ1 is part of the Automotive, AEC-Q100 series, meaning it has been qualified to the AEC-Q100 stress test qualification for integrated circuits used in automotive applications."},{"question":"Does INA281B1QDBVRQ1 have a shutdown feature?","answer":"The evidence does not list a shutdown or enable pin for this device. The INA281B1QDBVRQ1 is a basic current-sense amplifier without a dedicated shutdown function. For power-saving applications, the supply current of 1.5 mA must be considered."},{"question":"What is the INA281B1QDBVRQ1 equivalent?","answer":"A functional peer is the INA4290A2IRGVR, a quad-channel current-sense amplifier with similar bandwidth (1.1 MHz) and slew rate (2 V/µs), also AEC-Q100 qualified. The INA4290A2IRGVR offers four channels versus the single channel of the INA281B1QDBVRQ1, so it is not a pin-compatible drop-in but a higher-density alternative for multi-channel sensing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/INA281B1QDBVRQ1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/INA281B1QDBVRQ1 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}}