{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ATL431BIDBZR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"ATL431BIDBZR","canonicalUrl":"https://icboms.com/texas-instruments/ATL431BIDBZR","factsUrl":"https://icboms.com/api/mcp/products/ATL431BIDBZR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments ATL431BIDBZR adjustable shunt voltage reference, ±0.5% tolerance, 2.5V to 36V output, 35 µA min cathode current, 100 mA output, SOT-23-3 package, -40°C to 85°C.","salesMarkdown":"## Adjustable shunt reference with ±0.5% accuracy in SOT-23-3 The ±0.5% tolerance at 25°C places it a step above the standard ±1% grade — useful when the feedback divider in a switching supply or the threshold in an overvoltage comparator needs tighter regulation without moving to a fixed-voltage reference. Minimum cathode current is 35 µA, which means the reference stays in regulation with very little bias current. In a battery-powered feedback loop or a low-quiescent-current linear regulator, that 35 µA floor lets the designer keep the total supply draw under control. The output can sink up to 100 mA, so it can drive an optocoupler LED directly or power a small local load without a buffer transistor. ## Output voltage range and temperature drift Output voltage is adjustable from a 2.5 V minimum up to 36 V maximum, covering the common 3.3 V, 5 V, 12 V, and 24 V rail references. ## Package, footprint, and ordering codes The ATL431BIDBZR is supplied in a SOT-23-3 package, also listed as TO-236-3 / SC-59 / SOT-23-3. The base product number is ATL431; the 'B' grade indicates the ±0.5% tolerance tier. Surface-mount assembly with a standard SOT-23 footprint; no thermal pad to route.","metaTitle":"ATL431BIDBZR Shunt Voltage Reference, ±0.5% Tolerance","metaDescription":"Texas Instruments ATL431BIDBZR adjustable shunt reference, ±0.5% tolerance, 35 µA min cathode current, 100 mA output, SOT-23-3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Tolerance":"±0.5%","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Product Status":"Active","Reference Type":"Shunt","Voltage - Input":"-","lifecycle_stage":"eol_hot","Current - Output":"100 mA","Current - Supply":"-","Current - Cathode":"35 µA","Base Product Number":"ATL431","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"-","Operating Temperature":"-40°C~85°C(TA)","Voltage - Output (Max)":"36 V","Supplier Device Package":"SOT-23-3","Temperature Coefficient":"48ppm/°C","Voltage - Output (Min/Fixed)":"2.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6100","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/595233b6d1987111ec6736001713cde8.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/ATL431BIDBZR/alternatives.json"},"ai":{"faq":[{"question":"What is the minimum cathode current for ATL431BIDBZR?","answer":"The minimum cathode current is 35 µA. The shunt reference requires at least this current to maintain regulation. Below 35 µA the output voltage may drift outside the ±0.5% tolerance band."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/ATL431BIDBZR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/ATL431BIDBZR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}