{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TLV431BIDBZTG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TLV431BIDBZTG4","canonicalUrl":"https://icboms.com/texas-instruments/TLV431BIDBZTG4","factsUrl":"https://icboms.com/api/mcp/products/TLV431BIDBZTG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TLV431BIDBZTG4, adjustable shunt voltage reference, ±0.5% tolerance, 1.24 V to 6 V output, 15 mA cathode current, 100 µA min cathode current, -40°C to 85°C, SOT-23-3 package, Tape & Reel.","salesMarkdown":"## Active production, ±0.5% shunt reference in SOT-23-3 It delivers a ±0.5% tolerance on the internal 1.24 V bandgap, with the output adjustable up to 6 V via two external resistors. The part sinks up to 15 mA at the cathode and requires a minimum of 100 µA to stay in regulation. The ±0.5% tolerance is tighter than the standard TL431's ±1% grade. In a 3.3 V rail regulation loop using a 2.5 V reference, that ±0.5% translates to roughly ±12.5 mV of initial error at the reference pin — before resistor divider tolerances. For a 5% output-accuracy budget, that leaves most of the headroom for the resistor network and the regulator's own line/load regulation. The adjustable output spans from 1.24 V (the internal bandgap) up to 6 V. The 6 V ceiling limits this part to low-voltage rails; if your design needs a 10 V reference, you step up to the TL431 family which goes to 36 V. ## Shunt reference — no separate supply rail needed As a shunt reference, the TLV431BIDBZTG4 behaves like a programmable Zener diode. It sinks current through a cathode resistor connected to the input rail; the cathode current must stay between 100 µA and 15 mA to keep the output in regulation. The resistor value is calculated from (Vin - Vref) / I_bias, where I_bias is chosen to cover the load current plus the minimum cathode current. No separate Vcc pin means one fewer trace on the board.","metaTitle":"TLV431BIDBZTG4 Shunt Voltage Reference, ±0.5% Tolerance","metaDescription":"Texas Instruments TLV431BIDBZTG4 adjustable shunt voltage reference, ±0.5% tolerance, 1.24 V to 6 V output, 15 mA cathode current, -40°C to 85°C, 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)","Tolerance":"±0.5%","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Reference Type":"Shunt","Voltage - Input":"-","lifecycle_stage":"eol_hot","Current - Output":"15 mA","Current - Supply":"-","Current - Cathode":"100 µA","Base Product Number":"TLV431","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"-","Operating Temperature":"-40°C~85°C(TA)","Voltage - Output (Max)":"6 V","Supplier Device Package":"SOT-23-3","Temperature Coefficient":"-","Voltage - Output (Min/Fixed)":"1.24V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4de43c4ff3ead6fd17ae3f61f4aa48c4.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TLV431BIDBZTG4/alternatives.json"},"ai":{"faq":[{"question":"Is TLV431BIDBZTG4 a direct replacement for the TL431?","answer":"The TLV431BIDBZTG4 is pin-compatible with the TL431 in the same SOT-23-3 package, but its maximum output voltage is 6 V versus the TL431's 36 V. For low-voltage rails (1.24 V to 6 V) the TLV431BIDBZTG4 is a drop-in; for higher voltages you need the TL431 family."},{"question":"What is the tolerance of the TLV431BIDBZTG4 and how does it affect accuracy?","answer":"The TLV431BIDBZTG4 has a ±0.5% tolerance on the 1.24 V internal reference. In a typical 3.3 V supply feedback loop using a 2.5 V setpoint, this adds about ±12.5 mV of initial error at the reference pin — before resistor divider tolerances. It is a tighter grade than the standard TL431's ±1%."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TLV431BIDBZTG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TLV431BIDBZTG4 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}}