{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BTS54040LBBAUMA1","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BTS54040LBBAUMA1","canonicalUrl":"https://icboms.com/infineon/BTS54040LBBAUMA1","factsUrl":"https://icboms.com/api/mcp/products/BTS54040LBBAUMA1","rawCanonicalId":null},"summary":{"shortDescription":"Infineon BTS54040LBBAUMA1, Automotive Series, 4-channel high-side power switch, N-channel output, 39 mOhm typ Rds(on), SPI interface, 5.5 V to 28 V load supply, 3.8 V to 5.5 V logic supply, -40°C to 150°C junction temperature, PG-TSON-24-3 package.","salesMarkdown":"## Four-channel high-side switch rated for under-hood temperatures The Infineon BTS54040LBBAUMA1 is a four-channel N-channel high-side power switch from the Automotive series. Each output delivers up to 2 A continuous, with a typical on-resistance of 39 mOhm per channel. ## Dual supply rails and SPI diagnostics The load supply (VS) accepts 5.5 V to 28 V. Control and fault readback go through an SPI interface — the four outputs are addressed with a 1:1 input-to-output ratio. ## Self-contained fault protection — no external sense components Fault protection is integrated: fixed current limiting (no external sense resistor), over-temperature shutdown, and over-voltage clamping. The part handles a shorted load or a stalled motor without microcontroller intervention — the SPI interface reports the fault status so the ECU can log or respond. ## PG-TSON-24-3 package and thermal pad The 24-PowerTDFN package (PG-TSON-24-3) has an exposed thermal pad on the bottom. Surface-mount assembly follows standard lead-free reflow profiles.","metaTitle":"Infineon BTS54040LBBAUMA1 Automotive High-Side Switch","metaDescription":"Infineon BTS54040LBBAUMA1 automotive-grade 4-channel high-side switch. 39 mOhm typical Rds(on), SPI interface, 5.5-28 V load range, -40 to 150°C TJ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Infineon Technologies","Series":"Automotive","Package":"Tape & Reel (TR)","Features":"-","Interface":"SPI","Input Type":"-","Output Type":"N-Channel","Switch Type":"General Purpose","Rds On (Typ)":"39mOhm","Mounting Type":"Surface Mount","Package / Case":"24-PowerTDFN","Voltage - Load":"5.5V ~ 28V","lifecycle_stage":"eol_hot","Fault Protection":"Current Limiting (Fixed), Over Temperature, Over Voltage","Number of Outputs":"4","Base Product Number":"BTS54040","Output Configuration":"High Side","Ratio - Input:Output":"1:1","Operating Temperature":"-40°C ~ 150°C (TJ)","Current - Output (Max)":"2A","Supplier Device Package":"PG-TSON-24-3","Voltage - Supply (Vcc/Vdd)":"3.8V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.3500","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/bb032ca8db630054c45b623e7d734bb0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the lifecycle status of BTS54040LBBAUMA1?","answer":"No discontinuation notice or last-time-buy date has been issued."},{"question":"What is the Rds(on) of BTS54040LBBAUMA1?","answer":"This is the value at nominal junction temperature; actual Rds(on) increases with temperature per the normalised curve in the datasheet."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BTS54040LBBAUMA1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BTS54040LBBAUMA1 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}}