{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS40193DRCT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS40193DRCT","canonicalUrl":"https://icboms.com/texas-instruments/TPS40193DRCT","factsUrl":"https://icboms.com/api/mcp/products/TPS40193DRCT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS40193DRCT, Step-Down Buck Controller, 4.5V-18V Input, 300kHz, Synchronous Rectifier, Transistor Driver Output, 10-VSON (3x3) Package.","salesMarkdown":"## What this buck controller does on the board The TPS40193DRCT is a step-down (buck) DC-DC controller from Texas Instruments, designed to drive external N-channel MOSFETs in a synchronous rectifier topology. It takes a 4.5 V to 18 V input rail and regulates a single positive output through a transistor driver stage. Switching at a fixed 300 kHz, the controller delivers up to 85% duty cycle — enough headroom for high step-down ratios without pulse skipping. The synchronous rectifier means the low-side FET replaces the freewheeling diode, which cuts conduction loss and improves efficiency at higher output currents. ## Package, footprint, and rework reality Housed in a 10-VFDFN exposed-pad package (3×3 mm VSON), the part has a single thermal pad underneath — the main heat path is through that pad to the PCB copper. The datasheet layout recommendation calls for a solder paste stencil aperture that covers 50-70% of the pad area to avoid voiding. ## Lifecycle and sourcing posture No direct pin-compatible second source is listed on the TI portfolio, but the controller's function and pinout are specific to the 10-VSON footprint.","metaTitle":"TPS40193DRCT Buck Controller, 300kHz, 10-VSON, Active","metaDescription":"Texas Instruments TPS40193DRCT step-down buck controller, 4.5-18V input, 300kHz switching, synchronous rectification, 10-VSON package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Step-Down","Topology":"Buck","Clock Sync":"No","Output Type":"Transistor Driver","Mounting Type":"Surface Mount","Output Phases":"1","Package / Case":"10-VFDFN Exposed Pad","lifecycle_stage":"eol_hot","Control Features":"Enable, Power Good","Duty Cycle (Max)":"85%","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"300kHz","Operating Temperature":"-40°C ~ 85°C (TA)","Synchronous Rectifier":"Yes","Supplier Device Package":"10-VSON (3x3)","Voltage - Supply (Vcc/Vdd)":"4.5V ~ 18V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.09","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.09000","currency":"USD"},{"qty":10,"price":"$2.77500","currency":"USD"},{"qty":25,"price":"$2.61840","currency":"USD"},{"qty":100,"price":"$2.23070","currency":"USD"},{"qty":250,"price":"$2.09456","currency":"USD"},{"qty":500,"price":"$1.83274","currency":"USD"},{"qty":1250,"price":"$1.51856","currency":"USD"},{"qty":2500,"price":"$1.48200","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/d59c5c94c93bee18af05c49f16003562.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the switching frequency of TPS40193DRCT?","answer":"The controller switches at a fixed 300 kHz. This frequency is set internally and is not synchronizable to an external clock."},{"question":"Does TPS40193DRCT have synchronous rectification?","answer":"Yes, the controller includes a synchronous rectifier driver. This replaces the output diode with a low-side N-channel MOSFET for higher efficiency at moderate to heavy loads."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS40193DRCT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS40193DRCT when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}