{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL432AQPKG3","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL432AQPKG3","canonicalUrl":"https://icboms.com/texas-instruments/TL432AQPKG3","factsUrl":"https://icboms.com/api/mcp/products/TL432AQPKG3","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL432AQPKG3, adjustable shunt voltage reference, ±1% tolerance, 2.495 V fixed minimum, 100 mA output, 700 µA cathode current, SOT-89-3 (TO-243AA) package, -40°C to 125°C, active.","salesMarkdown":"## Shunt reference with a 2.495 V floor — what the adjustable range means Its output voltage is set by two external resistors from the 2.495 V minimum reference up to 36 V maximum, making it a drop-in precision voltage setpoint for feedback loops in switch-mode power supplies, linear regulators, and isolated DC-DC converters. ## 100 mA cathode current — the load budget for your feedback divider The shunt can sink up to 100 mA of continuous cathode current. In a typical feedback application, the cathode current is the sum of the bias current through the resistor divider and any external load. The 700 µA minimum cathode current (Ika(min)) ensures the device stays in regulation; below that the output voltage drifts. Design the divider so the total cathode current stays between 700 µA and 100 mA across all load and temperature conditions. The SOT-89-3 package (TO-243AA) has a large collector tab that conducts heat to the PCB copper. For continuous operation near the 100 mA ceiling, ensure the tab is soldered to a sufficient copper area — the datasheet's thermal impedance curves assume a minimum pad size. Running 100 mA at 125°C ambient without adequate copper can push the junction temperature above the 150°C absolute maximum. ## Active lifecycle — no last-time-buy clock on this BOM line Dual-sourcing with the TL431 in SOT-23 or TO-92 is straightforward if the board layout accommodates the different footprint.","metaTitle":"TL432AQPKG3 shunt voltage reference, adjustable, ±1%","metaDescription":"TL432AQPKG3 adjustable shunt reference, 2.495 V min output, 100 mA cathode current, ±1% tolerance, -40°C to 125°C, SOT-89-3.","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":"±1%","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"TO-243AA","Product Status":"Active","Reference Type":"Shunt","Voltage - Input":"-","lifecycle_stage":"eol_hot","Current - Output":"100 mA","Current - Supply":"-","Current - Cathode":"700 µA","Base Product Number":"TL432","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"-","Operating Temperature":"-40°C~125°C(TA)","Voltage - Output (Max)":"36 V","Supplier Device Package":"SOT-89-3","Temperature Coefficient":"-","Voltage - Output (Min/Fixed)":"2.495V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4200","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/2e8567ad04842692d5fb8309c69e90b6.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TL432AQPKG3/alternatives.json"},"ai":{"faq":[{"question":"Is TL432AQPKG3 equivalent to TL431?","answer":"Yes, the TL432AQPKG3 is functionally equivalent to the TL431 — same internal bandgap reference, same adjustable output from 2.495 V to 36 V, same 100 mA cathode current rating. The key difference is the package: the TL432AQPKG3 comes in a SOT-89-3, while the TL431 is commonly available in TO-92, SOT-23, or SOIC-8. The pinout differs, so a board respin is needed to swap between the two."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL432AQPKG3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL432AQPKG3 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}}