{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS2556DRBR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS2556DRBR","canonicalUrl":"https://icboms.com/texas-instruments/TPS2556DRBR","factsUrl":"https://icboms.com/api/mcp/products/TPS2556DRBR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS2556DRBR, high-side power distribution switch, 22 mOhm Rds(on) typ, 500 mA max output, 2.5 V to 6.5 V load voltage, adjustable current limit, slew-rate controlled, status flag, 8-VDFN exposed pad (8-SON 3x3 mm), -40°C to 125°C junction temperature.","salesMarkdown":"## 22 mOhm switch in a 3x3 mm footprint The TPS2556DRBR is a single-channel, high-side power distribution switch from Texas Instruments with a typical on-resistance of 22 mOhm. The switch integrates slew-rate control to limit inrush current during hot-plug events, a status flag output for fault reporting, and protection against overcurrent, overtemperature, and undervoltage lockout. The 22 mOhm Rds(on) at 5 V input sets the conduction loss floor: at 500 mA the I²R loss is about 5.5 mW, negligible for thermal budget. The real heat comes from the current-limit foldback — if the output is shorted, the part cycles in thermal shutdown, and the exposed-pad thermal resistance (RθJA around 50°C/W with proper board layout) determines how fast it cools. The adjustable current limit (set by a resistor from ILIM to GND) covers a range from roughly 200 mA to 1.5 A, but the 500 mA continuous rating is the safe operating ceiling for the package. For USB 3.0 ports that need 900 mA, this part is under-rated — the TPS2557 (1.5 A version) is the correct choice for that bus power budget. The UVLO threshold at about 2.2 V ensures the switch stays off until the supply rail is stable, which matters for sequencing in multi-rail systems.","metaTitle":"TPS2556DRBR Power Distribution Switch, 22 mOhm, 500 mA","metaDescription":"Texas Instruments TPS2556DRBR high-side power switch, 22 mOhm Rds(on), 500 mA output, adjustable current limit, -40°C to 125°C, 8-SON package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"Slew Rate Controlled, Status Flag","Interface":"On/Off","Input Type":"Non-Inverting","Output Type":"N-Channel","Switch Type":"General Purpose","Rds On (Typ)":"22mOhm","Mounting Type":"Surface Mount","Package / Case":"8-VDFN Exposed Pad","Product Status":"Active","Voltage - Load":"2.5V ~ 6.5V","lifecycle_stage":"eol_hot","Fault Protection":"Current Limiting (Adjustable), Over Temperature, UVLO","Number of Outputs":"1","Base Product Number":"TPS2556","Output Configuration":"High Side","Ratio - Input:Output":"1:1","Operating Temperature":"-40°C~125°C(TJ)","Current - Output (Max)":"500mA","Supplier Device Package":"8-SON (3x3)","Voltage - Supply (Vcc/Vdd)":"Not Required"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.4000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4f0e3953d9be3377744debd549f41b2e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS2556DRBR/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to TPS2556DRBR?","answer":"The TPS2557 is the higher-current sibling in the same family, rated for 1.5 A continuous output. Both share the same 8-SON (3x3 mm) package and pinout, so a board designed for the TPS2556 can accept the TPS2557 if the load requires more than 500 mA. The TPS2556's adjustable current limit is set with the same resistor value range."},{"question":"Can TPS2556DRBR be used for USB 3.0 power switching?","answer":"The TPS2556DRBR is rated for 500 mA continuous output. USB 3.0 ports require 900 mA per the specification, so this part is under-rated for that application. The TPS2557 (1.5 A) is the appropriate choice for USB 3.0 power switching within the same family."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS2556DRBR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS2556DRBR 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}}