{"id":6978,"date":"2026-06-22T12:15:31","date_gmt":"2026-06-22T12:15:31","guid":{"rendered":"https:\/\/materialparts.com\/tps2559drcr\/"},"modified":"2026-06-22T12:15:31","modified_gmt":"2026-06-22T12:15:31","slug":"tps2559drcr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/tps2559drcr\/","title":{"rendered":"TPS2559DRCR"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The TPS2559DRCR from Texas Instruments is a 2.5-6.5V precision adjustable current-limited power distribution switch with 13mOhm RDS(on), 1.2-4.7A adjustable limit, and 10-pin VSON package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u7c7b\u578b<\/td>\nPrecision Adjustable Current-Limited Power-Distribution Switch<\/td>\n<\/tr>\n
Operating Voltage<\/td>\n2.5V to 6.5V<\/td>\n<\/tr>\n
Continuous Output Current<\/td>\nUp to 5.5A<\/td>\n<\/tr>\n
Current Limit Range<\/td>\n1.2A to 4.7A (adjustable, +\/-4.4% at 4.7A)<\/td>\n<\/tr>\n
RDS(on)<\/td>\n13 mOhm (typical)<\/td>\n<\/tr>\n
Short-Circuit Shutoff<\/td>\n3.5 us (typical)<\/td>\n<\/tr>\n
Standby Current<\/td>\n2 uA (max)<\/td>\n<\/tr>\n
Soft Start<\/td>\nBuilt-in<\/td>\n<\/tr>\n
ESD Protection<\/td>\n8kV HBM \/ 15kV IEC system-level<\/td>\n<\/tr>\n
Fault Output<\/td>\nActive-low open-drain<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nVSON-10 (DRC, 3x3mm)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40C to +125C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 13mOhm high-side N-channel MOSFET<\/li>\n
  • Adjustable current limit: 1.2A to 4.7A (+\/-4.4%)<\/li>\n
  • 3.5us short-circuit shutoff<\/li>\n
  • Built-in soft-start for capacitive loads<\/li>\n
  • 2uA max standby current<\/li>\n
  • 8kV\/15kV system-level ESD<\/li>\n
  • Active-high enable input<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • USB ports and hubs<\/li>\n
    • Digital TV and set-top boxes<\/li>\n
    • VoIP phones<\/li>\n
    • Heavy capacitive load driving<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TPS2559DRCR from Texas Instruments is a 2.5-6.5V precision adjustable current-limited power distribution switch with 13mOhm RDS(on), 1.2-4.7A adjustable limit, and 10-pin VSON package. Key Specifications Type Precision Adjustable Current-Limited Power-Distribution Switch Operating Voltage 2.5V to 6.5V Continuous Output Current Up to 5.5A Current Limit Range 1.2A to 4.7A (adjustable, +\/-4.4% at 4.7A) […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19,13],"tags":[],"chip_brand":[138],"class_list":["post-6978","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"Pwr Switch, 2.5-6.5V, 13mOhm, 1.2-4.7A Adj CL, VSON-10","date_code":"","package_case":"VSON-10 (3.00 x 3.00 x 0.90 mm, 0.5mm pitch, exposed pad)","in_stock":4567,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/tps2559.pdf","price":"$0.74 @ 1ku","product_introduction":"The TPS2559DRCR from Texas Instruments is a precision adjustable current-limited power-distribution switch in a 10-pin 3x3mm VSON package with exposed thermal pad. The DRC suffix denotes the VSON-10 package, and R indicates tape and reel. The device integrates a 13mOhm N-channel high-side MOSFET with a precision current limiting circuit that can be programmed from 1.2A to 4.7A using a single external resistor from the ILIM pin to ground. The +\/-4.4% accuracy at 4.7A current limit is significantly better than typical load switches, making the TPS2559 suitable for USB applications where the current must be precisely controlled to meet USB specifications. The 3.5us short-circuit shutoff time prevents damage from fault conditions by quickly disconnecting the output when a short is detected. The built-in soft-start controls the output rise time to limit inrush current when driving heavy capacitive loads such as downstream USB devices with large bypass capacitors. The FAULT open-drain output asserts low during overcurrent or overtemperature conditions, allowing system monitoring. The 2uA maximum standby current minimizes battery drain when the switch is disabled. The 8kV HBM and 15kV IEC system-level ESD ratings provide robust protection for externally exposed ports.","working_principle":"The TPS2559DRCR uses a high-side N-channel MOSFET as the power switch element, driven by an internal charge pump that generates a gate voltage above the input supply to fully enhance the MOSFET. The 13mOhm RDS(on) is achieved with a large MOSFET geometry in the exposed-pad VSON package for thermal dissipation. The current limiting circuit measures the load current by sensing the voltage across the MOSFET during the on-state (RDS(on) sensing) or through a dedicated sense element. When the current exceeds the threshold set by the RILIM resistor, the device enters a constant-current mode where the gate drive is reduced to maintain the output current at the limit value. If the overload persists and the junction temperature rises, the thermal shutdown circuit turns off the MOSFET. The 3.5us short-circuit shutoff uses a fast comparator that detects the rapid current rise during a hard short and disables the MOSFET before the current reaches destructive levels. The soft-start circuit controls the gate drive ramp-up rate, limiting dV\/dt at the output and the associated inrush current (I = C x dV\/dt). The reverse current blocking feature prevents current from flowing from OUT to IN when the switch is disabled, protecting the upstream supply.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>GND<\/td>Power<\/td>Ground (connect to exposed pad)<\/td><\/tr>
      2,3,4<\/td>IN<\/td>Power<\/td>Input voltage (2.5-6.5V)<\/td><\/tr>
      5<\/td>EN<\/td>Input<\/td>Enable (active-high)<\/td><\/tr>
      6<\/td>ILIM<\/td>Input<\/td>Current limit programming resistor<\/td><\/tr>
      7<\/td>FAULT<\/td>Output<\/td>Fault indicator (open-drain, active-low)<\/td><\/tr>
      8<\/td>NC<\/td>-<\/td>No connect<\/td><\/tr>
      9,10<\/td>OUT<\/td>Power<\/td>Output to load<\/td><\/tr>
      Pad<\/td>GND<\/td>Power<\/td>Exposed thermal pad (ground)<\/td><\/tr><\/table>","application_scenarios":"
      • USB 2.0 port power switch with 500mA current limit set by RILM, 3.5us short-circuit protection, and 15kV IEC ESD for externally exposed connector<\/li>
      • Multi-port USB hub with TPS2559 per port, FAULT outputs wire-ORed to hub controller for overcurrent detection and port power management<\/li>
      • 5V set-top box peripheral power with 2A current limit and soft-start for 100uF downstream capacitor to limit inrush to 200mA<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>TPS2557DRCR<\/td>VSON-10<\/td>Lower current limit range<\/td><\/tr>
        TI<\/td>TPS2553DBVR<\/td>SOT-23-5<\/td>1.2A, smaller package<\/td><\/tr>
        TI<\/td>TPS25200DRVR<\/td>SON-6<\/td>With OVP protection<\/td><\/tr>
        onsemi<\/td>NCP380LAUAJAAT1G<\/td>UDFN-8<\/td>Adjustable CL, similar function<\/td><\/tr>
        TI<\/td>TPS259521DSGR<\/td>WSON-8<\/td>eFuse with OVP, more protection<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6978","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=6978"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6978\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=6978"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=6978"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=6978"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=6978"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}