{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BTS54220LBAAUMA1","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BTS54220LBAAUMA1","canonicalUrl":"https://icboms.com/infineon/BTS54220LBAAUMA1","factsUrl":"https://icboms.com/api/mcp/products/BTS54220LBAAUMA1","rawCanonicalId":null},"summary":{"shortDescription":"Infineon BTS54220LBAAUMA1, Automotive AEC-Q100, 4-channel high-side switch, N-channel output, Rds(on) typ 9mOhm/27mOhm, SPI interface, 5.5V~28V load, 3.8V~5.5V logic supply, PG-TSON-24-3 package, -40°C to 150°C junction temp.","salesMarkdown":"## Four-channel high-side driver with SPI diagnostics The BTS54220LBAAUMA1 is a 4-channel high-side power switch from Infineon, built for automotive loads that need current monitoring and fault reporting. Each output drives an N-channel MOSFET with a typical on-resistance of 9 mOhm on the lower-Rds(on) channels and 27 mOhm on the higher-Rds(on) pair — the split lets you assign the low-resistance channels to high-current loads like relays or solenoids and the higher-resistance ones to lamps or LEDs where the extra milliohms don't cost you headroom. ## AEC-Q100 and the 150 °C junction ceiling That puts it in the under-hood and engine-bay class, where ambient temperatures can hit 125 °C and the die sees the full thermal load from the pass element. The 24-PowerTDFN (PG-TSON-24-3) package has an exposed pad that needs a good thermal via pattern to the ground plane; without it the junction temperature will climb above the 150 °C ceiling under continuous 3 A loads. ## SPI interface and fault protection set Unlike a basic high-side switch that just turns on and off, this part talks back over SPI. The interface lets the MCU read the output status, detect open-load or short-to-battery conditions, and adjust the slew rate (the slew-rate-controlled feature is built in). The protection block covers current limiting (fixed threshold), over-temperature shutdown, over-voltage clamp, and under-voltage lockout on the logic supply — so a single fault event won't cascade into a dead rail.","metaTitle":"BTS54220LBAAUMA1 Automotive High-Side Switch, 4-Ch, SPI","metaDescription":"Infineon BTS54220LBAAUMA1 4-channel high-side switch, AEC-Q100, Rds(on) typ 9mOhm/27mOhm, SPI interface, 5.5-28V load, PG-TSON-24.","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, AEC-Q100","Package":"Tape & Reel (TR) Cut Tape (CT)","Features":"Slew Rate Controlled","Interface":"SPI","Input Type":"-","Output Type":"N-Channel","Switch Type":"General Purpose","Rds On (Typ)":"9mOhm, 27mOhm","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, UVLO","Number of Outputs":"4","Base Product Number":"BTS54220","Output Configuration":"High Side","Ratio - Input:Output":"1:1","Operating Temperature":"-40°C ~ 150°C (TJ)","Current - Output (Max)":"-","Supplier Device Package":"PG-TSON-24-3","Voltage - Supply (Vcc/Vdd)":"3.8V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4bafaec59acda8e7be8bd4e2140335aa.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the Rds(on) of the BTS54220LBAAUMA1?","answer":"The typical on-resistance is 9 mOhm on two channels and 27 mOhm on the other two. The lower value handles the high-current loads; the higher value is fine for lamps or signal-level switching where the extra resistance does not eat into the voltage budget."},{"question":"Is the BTS54220LBAAUMA1 AEC-Q100 qualified?","answer":"Yes, it is listed under the Automotive, AEC-Q100 series. That qualification covers the temperature range, reliability stress tests, and production-part approval required for automotive ECUs."},{"question":"What package does the BTS54220LBAAUMA1 come in?","answer":"It ships in a 24-PowerTDFN package, designated PG-TSON-24-3 by Infineon. The exposed pad on the bottom needs a thermal via pattern to the ground plane for heat spreading."},{"question":"Does the BTS54220LBAAUMA1 support SPI communication?","answer":"Yes, the interface is SPI. The MCU can read diagnostic data and configure the slew rate through the serial bus."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BTS54220LBAAUMA1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BTS54220LBAAUMA1 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}}