{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UCC27321QDRQ1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"UCC27321QDRQ1","canonicalUrl":"https://icboms.com/texas-instruments/UCC27321QDRQ1","factsUrl":"https://icboms.com/api/mcp/products/UCC27321QDRQ1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments UCC27321QDRQ1, Automotive AEC-Q100 single low-side MOSFET driver, 9 A peak output source and sink, inverting input, 4 V to 15 V supply, 20 ns rise/fall, -40 to 105 °C, 8-SOIC package.","salesMarkdown":"The UCC27321QDRQ1 delivers 9 A peak source and 9 A peak sink current into the MOSFET gate, with a typical rise and fall time of 20 ns. This symmetric drive strength lets it switch large-gate-charge power MOSFETs in hard-switching topologies — motor drives, DC-DC converters, and solenoid drivers — without an external booster stage. The 20 ns edge rate means the driver's own switching loss is negligible; the total turn-on and turn-off delay is set by the external gate resistor and the MOSFET's input capacitance. ## Automotive-grade qualification and temperature envelope This driver carries AEC-Q100 qualification, which adds the PPAP submission, change-notification control, and extended temperature-range validation that production automotive programs require. The 105°C ceiling is the derating boundary for the 9 A peak output — at high junction temperature the internal die temperature limits the repetitive peak current, so the thermal impedance of the PCB copper plane under the 8-SOIC package sets the practical duty cycle. Supply voltage range is 4 V to 15 V, which covers the common 5 V and 12 V gate-drive rails for automotive and industrial power stages. The inverting input type means the output is high when the input is low; the non-inverting sibling UCC27322 flips that polarity on the same pinout. ## Single-channel low-side configuration This is a single-channel, low-side driver. The driven configuration is low-side — the gate drive referenced to ground — suited for N-channel MOSFETs in buck converters, forward converters, and low-side switches. The gate type supports both N-channel and P-channel MOSFETs, though in practice the 9 A sink current is optimised for N-channel turn-off. The base product number is UCC27321; the QDRQ1 suffix denotes the automotive-qualified variant in 8-SOIC on Tape & Reel. The non-automotive UCC27321D is pin-compatible but lacks the AEC-Q100 qualification and the -40 to 105 °C rating.","metaTitle":"UCC27321QDRQ1 Low-Side MOSFET Driver, 9 A Peak, AEC-Q100","metaDescription":"Texas Instruments UCC27321QDRQ1 single low-side MOSFET driver, 9 A peak source/sink, 20 ns rise/fall, inverting input, -40 to 105 °C, AEC-Q100.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Series":"Automotive, AEC-Q100","Package":"Tape & Reel (TR); Cut Tape (CT)","Gate Type":"N-Channel, P-Channel MOSFET","Input Type":"Inverting","Channel Type":"Single","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","Voltage - Supply":"4V ~ 15V","Number of Drivers":"1","Base Product Number":"UCC27321","Driven Configuration":"Low-Side","Operating Temperature":"-40°C~105°C(TA)","Rise / Fall Time (Typ)":"20ns, 20ns","Supplier Device Package":"8-SOIC","Logic Voltage - VIL, VIH":"1.1V, 2.7V","Current - Peak Output (Source, Sink)":"9A, 9A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7785","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/496d0ee61bea3c5c6eacfc5945d30a01.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/UCC27321QDRQ1/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between UCC27321 and UCC27322?","answer":"The UCC27321 has an inverting input — output is high when the input is low. The UCC27322 is the non-inverting version: output follows the input. Both share the same pinout, 9 A peak drive, and 20 ns rise/fall times. The automotive QDRQ1 suffix applies to both variants."},{"question":"Is UCC27321QDRQ1 a direct replacement for the base UCC27321?","answer":"The non-automotive UCC27321D is rated 0 to 70 °C and lacks the automotive change-control. If your BOM calls for the automotive grade, the QDRQ1 is the correct fit."},{"question":"Does UCC27321QDRQ1 have an enable pin?","answer":"No. This is a single-input, single-output driver with no enable or shutdown pin. The input is inverting; to disable the output you must pull the input high (above the 2.7 V VIH threshold) or remove the supply voltage."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/UCC27321QDRQ1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/UCC27321QDRQ1 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}}