{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ATL431LIAQDQNR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"ATL431LIAQDQNR","canonicalUrl":"https://icboms.com/texas-instruments/ATL431LIAQDQNR","factsUrl":"https://icboms.com/api/mcp/products/ATL431LIAQDQNR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments ATL431LIAQDQNR, adjustable shunt voltage reference, ±1% tolerance, 80 µA minimum cathode current, 15 mA output current, 2.5 V to 36 V output range, -40°C to 125°C, 4-X2SON (1x1 mm) package.","salesMarkdown":"## Shunt reference for precision feedback and biasing Its ±1% tolerance gives you a tight output window without trimming, and the 80 µA minimum cathode current lets it operate in low-power bias chains where every microamp counts. The output is adjustable from 2.5 V up to 36 V, covering the common 3.3 V, 5 V, 12 V, and 24 V rails you see in industrial power supplies, automotive ECUs, and isolated converter secondary-side regulation. ## 125°C junction — under-hood and industrial environments The 125°C junction rating means the reference holds its accuracy through thermal cycling without derating the output current. If your design lives in a heated enclosure or near a motor drive, this temperature grade saves you from having to add active cooling or overspec the bias resistor. ## 15 mA output — resistor sizing and dissipation The 15 mA output current is the maximum the shunt can sink while maintaining regulation. In practice, you size the bias resistor so the cathode current stays above the 80 µA minimum under all load conditions, and below 15 mA at maximum input voltage. For a 24 V rail dropping to 5 V output, a 1.3 kΩ resistor biased at roughly 15 mA works, but check the power dissipation in the resistor — at 24 V input the resistor drops 19 V at 15 mA, which is 285 mW. Use a 0.5 W or larger resistor if your input sits at the upper end of the range. ## 4-X2SON (1x1 mm) — layout and assembly notes The 4-XDFN exposed pad package, also called 4-X2SON, measures just 1x1 mm — smaller than a 0402 resistor. That saves board area in dense layouts like USB-C chargers, LED drivers, or sensor modules, but the tiny footprint demands careful solder paste stencil design and a reflow profile that matches the exposed pad. The pad is the thermal path for the die; make sure your PCB has a via-in-pad or a short trace to a copper plane to keep junction temperature in check when the part is sinking close to 15 mA continuously. For dual-sourcing or a pin-compatible second source, the LM4132AMF-4.1/NOPB is a series reference with tighter tolerance (±0.05%) but a fixed 4.096 V output — functionally different topology (series vs. shunt), so evaluate your bias network before substituting.","metaTitle":"ATL431LIAQDQNR Adjustable Shunt Reference, ±1% Tolerance","metaDescription":"TI ATL431LIAQDQNR adjustable shunt voltage reference, ±1% tolerance, 80 µA min cathode current, 15 mA output, -40°C to 125°C, 4-X2SON package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Tolerance":"±1%","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"4-XDFN Exposed Pad","Product Status":"Active","Reference Type":"Shunt","Voltage - Input":"-","lifecycle_stage":"eol_hot","Current - Output":"15 mA","Current - Supply":"-","Current - Cathode":"80 µA","Base Product Number":"ATL431","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"-","Operating Temperature":"-40°C~125°C(TA)","Voltage - Output (Max)":"36 V","Supplier Device Package":"4-X2SON (1x1)","Temperature Coefficient":"-","Voltage - Output (Min/Fixed)":"2.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6000","priceTiers":[{"qty":1,"price":"$0.60000","currency":"USD"},{"qty":10,"price":"$0.52800","currency":"USD"},{"qty":25,"price":"$0.49600","currency":"USD"},{"qty":100,"price":"$0.40500","currency":"USD"},{"qty":250,"price":"$0.37616","currency":"USD"},{"qty":500,"price":"$0.32012","currency":"USD"},{"qty":1000,"price":"$0.25610","currency":"USD"},{"qty":3000,"price":"$0.17416","currency":"USD"},{"qty":6000,"price":"$0.16292","currency":"USD"},{"qty":15000,"price":"$0.15900","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/01036f6b90e1bdae2ec431511e354e53.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/ATL431LIAQDQNR/alternatives.json"},"ai":{"faq":[{"question":"What is the tolerance of ATL431LIAQDQNR?","answer":"The ATL431LIAQDQNR has a ±1% tolerance on the reference voltage. That means the output voltage at the setpoint will be within 1% of the programmed value over the full operating temperature range, without any external trimming."},{"question":"What is the output current of ATL431LIAQDQNR?","answer":"The maximum output (cathode) current is 15 mA. The minimum cathode current required to maintain regulation is 80 µA. The bias resistor must be sized to keep the operating current between these two limits across all load and line conditions."},{"question":"Is ATL431LIAQDQNR RoHS compliant?","answer":"Yes, the ATL431LIAQDQNR is ROHS3 compliant, meeting the EU's restriction on hazardous substances for electronic equipment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/ATL431LIAQDQNR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/ATL431LIAQDQNR 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}}