{"id":6299,"date":"2026-06-12T11:19:21","date_gmt":"2026-06-12T11:19:21","guid":{"rendered":"https:\/\/materialparts.com\/ncp302045mntwg\/"},"modified":"2026-06-12T11:19:21","modified_gmt":"2026-06-12T11:19:21","slug":"ncp302045mntwg","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/ncp302045mntwg\/","title":{"rendered":"NCP302045MNTWG"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The NCP302045MNTWG from onsemi is a 45V, 5A programmable overcurrent protection switch in a DFN-8 (3x3mm) package. Featuring 50m\u03a9 on-resistance, programmable overvoltage protection, thermal shutdown, and -60V reverse polarity protection, it is designed for automotive and industrial power rail protection.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n
\u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n4.5V – 45V<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u062f \u0627\u0644\u062d\u0627\u0644\u064a<\/td>\n0.5A – 5A (programmable)<\/td>\n<\/tr>\n
On-Resistance<\/td>\n50m\u03a9 (typ)<\/td>\n<\/tr>\n
Overvoltage Protection<\/td>\nProgrammable<\/td>\n<\/tr>\n
Reverse Polarity Protection<\/td>\n-60V<\/td>\n<\/tr>\n
Thermal Shutdown<\/td>\nYes<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629 \u0625\u0644\u0649 +125 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nDFN-8 (3x3mm)<\/td>\n<\/tr>\n<\/table>\n

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    \n
  • 4.5V-45V wide input range for automotive 12V\/24V systems<\/li>\n
  • Programmable current limit from 0.5A to 5A<\/li>\n
  • -60V reverse polarity protection for harsh environments<\/li>\n
  • 50m\u03a9 low on-resistance for minimal voltage drop<\/li>\n
  • Programmable overvoltage threshold<\/li>\n
  • Thermal shutdown with auto-retry for fault tolerance<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Automotive ECU and sensor power protection<\/li>\n
    • Industrial 24V bus load protection<\/li>\n
    • USB and peripheral port overcurrent protection<\/li>\n
    • Battery-powered system reverse polarity guard<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The NCP302045MNTWG from onsemi is a 45V, 5A programmable overcurrent protection switch in a DFN-8 (3x3mm) package. Featuring 50m\u03a9 on-resistance, programmable overvoltage protection, thermal shutdown, and -60V reverse polarity protection, it is designed for automotive and industrial power rail protection. Key Specifications Input Voltage 4.5V – 45V Current Limit 0.5A – 5A (programmable) […]<\/p>\n","protected":false},"author":2,"featured_media":6360,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,29],"tags":[],"chip_brand":[144],"class_list":["post-6299","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-integrated-circuits-ics","category-power-management-ics-pmic","chip_brand-on"],"acf":{"brief_explanation":"45V 5A programmable overcurrent protection switch, 50m\u03a9 Ron, -60V reverse polarity, DFN-8","date_code":"","package_case":"DFN-8 (3x3mm, 0.65mm pitch)","in_stock":4759,"datasheet":"https:\/\/www.onsemi.com\/download\/data-sheet\/pdf\/ncp302045-d.pdf","price":"$0.85 @1ku","product_introduction":"The NCP302045MNTWG from onsemi is a 45V, 5A programmable overcurrent protection switch designed for automotive and industrial applications. It combines a low 50m\u03a9 on-resistance MOSFET with comprehensive protection features including programmable current limiting, overvoltage protection, thermal shutdown, and -60V reverse polarity protection. The DFN-8 (3x3mm) package provides excellent thermal performance in a compact footprint, making it ideal for space-constrained ECU and sensor module protection.","working_principle":"The NCP302045MNTWG integrates an N-channel power MOSFET with a sophisticated control and protection circuit. During normal operation, the MOSFET is fully enhanced, providing a low 50m\u03a9 conduction path. The current sense amplifier monitors the load current through the MOSFET's RDS(on), and when it exceeds the programmed threshold (set by an external resistor), the device enters current-limit mode by reducing the gate drive. The overvoltage comparator disables the MOSFET when VIN exceeds the programmed threshold. A reverse voltage detector protects against negative input voltages down to -60V by keeping the MOSFET off. Thermal shutdown activates at approximately 165\u00b0C with automatic retry after cooling.","pin_description":"
      Pin<\/th>Name<\/th>Description<\/th><\/tr>
      1<\/td>IN<\/td>Input supply (4.5-45V)<\/td><\/tr>
      2<\/td>UVLO<\/td>Undervoltage lockout programming<\/td><\/tr>
      3<\/td>OVP<\/td>Overvoltage protection programming<\/td><\/tr>
      4<\/td>ILIM<\/td>Current limit programming resistor<\/td><\/tr>
      5<\/td>\/FAULT<\/td>Fault indicator output (open-drain)<\/td><\/tr>
      6<\/td>EN<\/td>Enable input<\/td><\/tr>
      7<\/td>OUT<\/td>Output to load<\/td><\/tr>
      8<\/td>GND<\/td>Ground<\/td><\/tr>
      Pad<\/td>GND<\/td>Exposed thermal pad (GND)<\/td><\/tr><\/table>","application_scenarios":"
      • Automotive ECU and sensor module power rail protection<\/li>
      • Industrial 24V bus downstream device protection<\/li>
      • USB port and peripheral overcurrent and overvoltage guard<\/li>
      • Battery-powered equipment reverse polarity and short circuit protection<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Vin<\/th>Imax<\/th>Ron<\/th><\/tr>
        NCP302045L<\/td>onsemi<\/td>4.5-45V<\/td>5A<\/td>50m\u03a9<\/td><\/tr>
        TPS25921A<\/td>TI<\/td>4.5-60V<\/td>5A<\/td>50m\u03a9<\/td><\/tr>
        MAX14572<\/td>ADI<\/td>4.5-36V<\/td>3A<\/td>80m\u03a9<\/td><\/tr>
        FUSB302<\/td>onsemi<\/td>4.2-22V<\/td>3A<\/td>50m\u03a9<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6299","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=6299"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6299\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media\/6360"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=6299"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=6299"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=6299"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=6299"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}