{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS62403DRCT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS62403DRCT","canonicalUrl":"https://icboms.com/texas-instruments/TPS62403DRCT","factsUrl":"https://icboms.com/api/mcp/products/TPS62403DRCT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS62403DRCT, Dual Step-Down Buck Converter, 2.25 MHz, 400 mA + 600 mA Outputs, Programmable Fixed Output, 10-VSON (3x3 mm), -40°C to 85°C, Active.","salesMarkdown":"## Dual-rail supply in a 3x3 mm footprint One channel is rated for 400 mA, the other for 600 mA continuous output — a pairing sized for a low-power SoC core (1.1 V) and its I/O or analog rail (1.575 V or 2.8 V) in a single 10-VSON package. ## Switching at 2.25 MHz — inductor sizing trade-off The 2.25 MHz switching frequency lets you use 1 µH to 2.2 µH inductors and small ceramic output capacitors, shrinking the total solution footprint. The trade-off is higher switching losses at light load — expect efficiency to peak above 90% at moderate loads and drop off below 10 mA load. For battery-powered designs where light-load efficiency matters, evaluate the PFM mode behaviour in the datasheet. Both outputs use synchronous rectification, so no external Schottky catch diode is needed. That saves a component and keeps the layout tighter, but the bottom FET's dead-time control sets the efficiency floor at very light loads. ## Industrial temperature, not automotive qualified It is not AEC-Q100 qualified, so do not route it into an under-hood or cabin automotive power tree without a waiver. The supplier device package is 10-VSON (3x3); the PCB land pattern should match the TI recommended footprint in the datasheet. The TPS62403DRCT is the tape-and-reel variant (2,500/reel); the cut-tape option is also listed for prototype or small-run quantities.","metaTitle":"TPS62403DRCT Dual Buck Regulator, 2.25 MHz, 400/600 mA","metaDescription":"TI TPS62403DRCT dual step-down buck converter: 2.5 V to 6 V input, 400 mA + 600 mA outputs, 2.25 MHz switching, 10-VSON package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Step-Down","Topology":"Buck","Output Type":"Programmable (Fixed)","Mounting Type":"Surface Mount","Package / Case":"10-VFDFN Exposed Pad","Product Status":"Active","lifecycle_stage":"eol_hot","Current - Output":"400mA, 600mA","Number of Outputs":"2","Base Product Number":"TPS62403","Output Configuration":"Positive","Frequency - Switching":"2.25MHz","Operating Temperature":"-40°C~85°C(TA)","Synchronous Rectifier":"Yes","Voltage - Input (Max)":"6V","Voltage - Input (Min)":"2.5V","Voltage - Output (Max)":"-","Supplier Device Package":"10-VSON (3x3)","Voltage - Output (Min/Fixed)":"1.1V, 1.575V (2.8V)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.0000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cfaf177bcaabe1e282d4773c0ccec85d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS62403DRCT/alternatives.json"},"ai":{"faq":[{"question":"Is TPS62403DRCT pin-compatible with TPS62400?","answer":"Yes, the TPS62403DRCT is pin-compatible across the TPS6240x family. The difference is the fixed output voltage options: the TPS62403 has programmable fixed outputs of 1.1 V, 1.575 V, or 2.8 V, while the TPS62400 uses a different voltage set. The pinout and package (10-VSON) are identical, so you can swap without a PCB layout change."},{"question":"Can TPS62403DRCT be used for dual 1.8 V and 3.3 V outputs?","answer":"Not directly with the fixed output option — the available fixed voltages are 1.1 V, 1.575 V, or 2.8 V per the output type 'Programmable (Fixed)'. To get 1.8 V and 3.3 V, you would need an adjustable-output variant in the same family or an external resistor divider if the device supports it. Confirm the feedback pin configuration in the datasheet."},{"question":"What is the efficiency of TPS62403DRCT at typical output voltages?","answer":"Efficiency depends on the input-to-output differential and load current. At 3.6 V input and 1.8 V output, the device typically achieves above 90% efficiency in the 100 mA to 400 mA range. Light-load efficiency drops at 2.25 MHz due to switching losses; evaluate the PFM mode for sub-10 mA loads."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS62403DRCT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS62403DRCT 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}}