{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TLE42644GHTSA3","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"TLE42644GHTSA3","canonicalUrl":"https://icboms.com/infineon/TLE42644GHTSA3","factsUrl":"https://icboms.com/api/mcp/products/TLE42644GHTSA3","rawCanonicalId":null},"summary":{"shortDescription":"Infineon OPTIREG™ TLE42644GHTSA3, Automotive AEC-Q100, 5V fixed-output LDO, 100mA, 40V input max, 0.5V dropout at 100mA, 68dB PSRR at 100Hz, PG-SOT223-4 package.","salesMarkdown":"## 5V fixed rail for 12V automotive sensor modules The TLE42644GHTSA3 is a single-output, 5V fixed LDO from Infineon's OPTIREG™ family, qualified to AEC-Q100 for automotive use. It delivers 100mA continuous output from a 40V max input, with a maximum dropout of 0.5V at full load. A 68dB PSRR at 100Hz knocks down the dominant alternator ripple frequency, keeping a clean 5V rail for sensor analog supplies or MCU ADC references. ## Dropout headroom and quiescent draw for always-on rails At 100mA the maximum dropout is 0.5V, so the input can sag to 5.5V before the output loses regulation — useful during cold-crank events where the battery dips below 6V. Quiescent current is 60µA typical, keeping the regulator's own draw low for ignition-off or battery-backed loads. Built-in protections — over-current, over-temperature, reverse polarity, and short-circuit — reduce the need for external clamp diodes or resettable fuses on the output. ## Active lifecycle — no obsolescence watch for new BOMs The part is ROHS3 compliant and supplied in tape-and-reel or cut-tape options for the PG-SOT223-4 package. ## Package and footprint — SOT223-4 rework notes The PG-SOT223-4 (TO-261AA) package has a large exposed tab on the bottom for thermal dissipation. The tab is the output (VOUT) potential, so the PCB copper pour under it must be connected to the output net, not ground. Confirm the orientation against the datasheet before reflow; the tab's large thermal mass means the hot-air station needs a few extra seconds to reflow the joint without lifting adjacent pads.","metaTitle":"TLE42644GHTSA3 Infineon 5V 100mA LDO, AEC-Q100, SOT223-4","metaDescription":"TLE42644GHTSA3: 5V fixed-output LDO, 100mA, 40V input, 68dB PSRR at 100Hz, -40°C to 150°C junction. AEC-Q100 qualified. Active production. Sourced per RFQ.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q100, OPTIREG™","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Sensors & Transducers"],"specifications":{"PSRR":"68dB (100Hz)","Series":"Automotive, AEC-Q100, OPTIREG™","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-261-4, TO-261AA","lifecycle_stage":"eol_hot","Current - Output":"100mA","Protection Features":"Over Current, Over Temperature, Reverse Polarity, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 150°C (TJ)","Voltage - Input (Max)":"40V","Voltage Dropout (Max)":"0.5V @ 100mA","Current - Supply (Max)":"4 mA","Supplier Device Package":"PG-SOT223-4","Current - Quiescent (Iq)":"60 µA","Voltage - Output (Min/Fixed)":"5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.26","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.26000","currency":"USD"},{"qty":10,"price":"$2.03300","currency":"USD"},{"qty":25,"price":"$1.91800","currency":"USD"},{"qty":100,"price":"$1.63410","currency":"USD"},{"qty":250,"price":"$1.53432","currency":"USD"},{"qty":500,"price":"$1.34254","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/6f5422d669f6a4d0f3dfff8031758bd6.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is TLE42644GHTSA3 suitable for 12V automotive systems?","answer":"Yes. The 40V max input rating covers the typical 12V automotive load-dump pulse (up to 35V), and the -40°C to 150°C junction range handles under-hood ambient temperatures. AEC-Q100 qualification confirms it meets automotive reliability standards."},{"question":"Is TLE42644GHTSA3 a suitable replacement for TLE42644G?","answer":"The TLE42644G is the same die in a different package variant (PG-SOT223-4 vs possibly another SOT223 variant). The TLE42644GHTSA3 is the tape-and-reel suffix version. Electrically they are identical — same 5V fixed output, 100mA, 40V input, and protection features. Confirm the package footprint matches your PCB before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/TLE42644GHTSA3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/TLE42644GHTSA3 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}