{"id":5749,"date":"2026-06-11T04:40:15","date_gmt":"2026-06-11T04:40:15","guid":{"rendered":"https:\/\/materialparts.com\/tps23755rjjr\/"},"modified":"2026-06-11T06:40:20","modified_gmt":"2026-06-11T06:40:20","slug":"tps23755rjjr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/tps23755rjjr\/","title":{"rendered":"TPS23755RJJR"},"content":{"rendered":"

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

The TPS23755RJJR from TI is a PoE Powered Device interface with integrated DC-DC controller supporting IEEE 802.3at Type 2 up to 25.5W in VQFN-20.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n
\u5305\u88c5<\/td>\nVQFN-20 (3.5×3.5mm)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • See datasheet for complete specifications<\/li>\n
  • Industry-standard package<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Industrial control<\/li>\n
    • Consumer electronics<\/li>\n
    • Communication equipment<\/li>\n
    • Power management<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TPS23755RJJR from TI is a PoE Powered Device interface with integrated DC-DC controller supporting IEEE 802.3at Type 2 up to 25.5W in VQFN-20. Key Specifications Package VQFN-20 (3.5×3.5mm) Features See datasheet for complete specifications Industry-standard package Applications Industrial control Consumer electronics Communication equipment Power management<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,29],"tags":[],"chip_brand":[138],"class_list":["post-5749","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-power-management-ics-pmic","chip_brand-ti"],"acf":{"brief_explanation":"PoE PD interface + DC-DC controller, 25.5W, VQFN-20","date_code":"","package_case":"VQFN-20 (3.5x3.5mm)","in_stock":13196,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/tps23755.pdf","price":"$2.50 @ 1ku","product_introduction":"The TPS23755RJJR from TI is a PoE Powered Device interface with integrated DC-DC controller supporting IEEE 802.3at Type 2 up to 25.5W in VQFN-20.","working_principle":"The TPS23755RJJR is a Powered Device (PD) controller for Power-over-Ethernet (PoE) systems compliant with IEEE 802.3at Type 1 (up to 25.5W). The PD detection sequence: when PSE applies 2.7-10.1V, the TPS23755 presents a 24.9kOhm signature resistance to identify itself as a valid PD. When the PSE raises voltage to 15.5-20.5V for classification, the device draws a specific current (set by VC1\/VC2 resistors) to indicate its power requirement. After classification, the PSE ramps voltage to 48V, and the TPS23755 drives the GATE pin to turn on an external N-channel MOSFET, connecting the PoE input (VDD1-RTN) to the DC-DC converter input. An internal current limit protects against inrush current during hot-swap. The CTR pin provides a current-limit reference for the downstream DC-DC converter, and the PG pin signals when the output is valid.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>VC1<\/td>Analog<\/td>Classification current set resistor 1<\/td><\/tr>
      2<\/td>VC2<\/td>Analog<\/td>Classification current set resistor 2<\/td><\/tr>
      3<\/td>RTN<\/td>Power<\/td>Return path (hot-swap MOSFET drain)<\/td><\/tr>
      4<\/td>DEN<\/td>Input<\/td>Detect enable (pull to VSS for auto)<\/td><\/tr>
      5<\/td>PG<\/td>Output<\/td>Power good indicator (open-drain)<\/td><\/tr>
      6<\/td>CTL<\/td>Input<\/td>Control input for operating mode<\/td><\/tr>
      7<\/td>CTR<\/td>Output<\/td>Current limit reference for DC-DC<\/td><\/tr>
      8<\/td>VDD<\/td>Power<\/td>Internal supply bypass<\/td><\/tr>
      9<\/td>VSS<\/td>Power<\/td>Ground reference<\/td><\/tr>
      10<\/td>GATE<\/td>Output<\/td>Gate drive for external hot-swap MOSFET<\/td><\/tr>
      11<\/td>VDD1<\/td>Power<\/td>PoE input positive<\/td><\/tr>
      12-20<\/td>NC\/Pad<\/td>-<\/td>Thermal pad (connect to VSS)<\/td><\/tr><\/table>","application_scenarios":"
    • Industrial control<\/li>
    • Consumer electronics<\/li>
    • Communication equipment<\/li>
    • Power management<\/li>","alternative_models":"
      Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
      Texas Instruments<\/td>TPS2378PWP<\/td>HTSSOP-20<\/td>Higher power PD, 25.5W<\/td><\/tr>
      Texas Instruments<\/td>TPS23756RJJR<\/td>VQFN-20<\/td>Similar with DC-DC controller<\/td><\/tr>
      Analog Devices<\/td>LTC4267CGN<\/td>SSOP-16<\/td>PoE PD with switching regulator<\/td><\/tr>
      onsemi<\/td>NCP1083DPBG<\/td>QFN-28<\/td>802.3at PoE PD, 51W<\/td><\/tr>
      Microchip<\/td>PD70224-IQMN<\/td>QFN-40<\/td>PoE PD controller, 90W<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5749","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=5749"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5749\/revisions"}],"predecessor-version":[{"id":5899,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5749\/revisions\/5899"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=5749"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=5749"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=5749"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=5749"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}