{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TLE46782ELXUMA1","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"TLE46782ELXUMA1","canonicalUrl":"https://icboms.com/infineon/TLE46782ELXUMA1","factsUrl":"https://icboms.com/api/mcp/products/TLE46782ELXUMA1","rawCanonicalId":null},"summary":{"shortDescription":"Infineon OPTIREG™ TLE46782ELXUMA1 automotive LDO, 5V fixed output, 200mA, 45V input, SSOP-14-2 exposed pad, -40 to 150°C, AEC-Q100.","salesMarkdown":"## Supply rail and dropout headroom The TLE46782ELXUMA1: Rated for 45 V input max, this LDO sits on an automotive 12 V or 24 V bus and survives load-dump transients without an external clamp — the internal FET handles the surge. Dropout is 0.3 V max at 150 mA output, so the input rail must stay at least 300 mV above 5 V across the full load range. At cold crank where the battery dips to 6 V, the 5 V output holds regulation as long as the input stays above 5.3 V. ## Ripple rejection and noise budget 65 dB PSRR at 100 Hz means the alternator ripple at the fundamental frequency is attenuated by a factor of ~1800 — a 1 Vpp ripple on the input becomes roughly 0.55 mVpp at the output, clean enough for the analog supply rail of an engine ECU's sensor interface. ## Protection and supervisory features Built-in over-current, over-temperature, reverse polarity, and short-circuit protection let the regulator survive a miswired harness or a stalled load without latching off — it recovers when the fault clears. The integrated reset and watchdog supervisor mean this single IC replaces a separate voltage monitor and watchdog timer in safety-critical designs — useful for ASIL-capable ECUs that need a guaranteed reset on brownout. AEC-Q100 qualified across -40°C to 150°C ambient — this is the full under-hood temperature band. An engine-bay ECU that sees 125°C on a hot soak still has margin to the 150°C limit. Part of the OPTIREG™ family, designed for automotive power supply chains where a pre-regulated 5 V rail feeds the MCU, CAN transceiver, and sensor bias.","metaTitle":"Infineon TLE46782ELXUMA1 LDO 5V 200mA SSOP-14-2","metaDescription":"Infineon TLE46782ELXUMA1 OPTIREG™ automotive LDO, 5V fixed output, 200mA, 45V input max, 65dB PSRR, -40 to 150°C. Active production, RoHS3. Quote to order.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q100, OPTIREG™","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"PSRR":"65dB (100Hz)","Series":"Automotive, AEC-Q100, OPTIREG™","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"14-LSSOP (0.154\\\", 3.90mm Width) Exposed Pad","lifecycle_stage":"eol_hot","Control Features":"Reset, Watchdog","Current - Output":"200mA","Protection Features":"Over Current, Over Temperature, Reverse Polarity, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 150°C","Voltage - Input (Max)":"45V","Voltage Dropout (Max)":"0.3V @ 150mA","Current - Supply (Max)":"6 mA","Supplier Device Package":"PG-SSOP-14-2","Current - Quiescent (Iq)":"80 µA","Voltage - Output (Min/Fixed)":"5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.03","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.03000","currency":"USD"},{"qty":10,"price":"$1.82600","currency":"USD"},{"qty":25,"price":"$1.72240","currency":"USD"},{"qty":100,"price":"$1.46740","currency":"USD"},{"qty":250,"price":"$1.37784","currency":"USD"},{"qty":500,"price":"$1.20562","currency":"USD"},{"qty":1000,"price":"$0.99894","currency":"USD"},{"qty":2500,"price":"$0.93004","currency":"USD"},{"qty":5000,"price":"$0.89560","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/5de48bba72e6d738cc583434ac738196.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the PSRR of TLE46782ELXUMA1 and why does it matter?","answer":"65 dB at 100 Hz. This means the regulator attenuates alternator ripple at the fundamental frequency by roughly 1800 times — a 1 Vpp input ripple becomes about 0.55 mVpp at the output, keeping the 5 V rail clean for sensitive analog circuits in an automotive ECU."},{"question":"What protection features does TLE46782ELXUMA1 include?","answer":"Over-current, over-temperature, reverse polarity, and short-circuit protection. The regulator survives a miswired harness or a stalled load and recovers automatically when the fault clears."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/TLE46782ELXUMA1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/TLE46782ELXUMA1 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}