{"id":2549,"date":"2026-05-23T06:10:56","date_gmt":"2026-05-23T06:10:56","guid":{"rendered":"https:\/\/materialparts.com\/lm74700qdbvrq1\/"},"modified":"2026-05-23T06:10:56","modified_gmt":"2026-05-23T06:10:56","slug":"lm74700qdbvrq1","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/lm74700qdbvrq1\/","title":{"rendered":"LM74700QDBVRQ1"},"content":{"rendered":"

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

The LM74700QDBVRQ1 from Texas Instruments is an automotive-qualified ideal diode controller that drives an external N-channel MOSFET to emulate a near-ideal Schottky diode. In a SOT-23-6 package, it provides reverse polarity protection and power supply ORing with only 26mV forward voltage drop.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n
Operating Voltage<\/td>\n3V ~ 65V<\/td>\n<\/tr>\n
Forward Voltage Drop<\/td>\n26mV (regulated)<\/td>\n<\/tr>\n
Reverse Current<\/td>\n3uA max<\/td>\n<\/tr>\n
Gate Drive Voltage<\/td>\n12V above ANODE<\/td>\n<\/tr>\n
\u9759\u6001\u7535\u6d41<\/td>\n155uA (operating)<\/td>\n<\/tr>\n
\u8d44\u683c<\/td>\nAEC-Q100 Grade 1<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C ~ 125\u00b0C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOT-23-6<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • AEC-Q100 Grade 1 automotive qualified<\/li>\n
  • 65V maximum operating voltage<\/li>\n
  • 26mV regulated forward voltage drop<\/li>\n
  • 3uA max reverse leakage current<\/li>\n
  • 12V gate drive for standard N-channel MOSFETs<\/li>\n
  • Fast reverse current protection (0.5us)<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Automotive battery reverse polarity protection<\/li>\n
    • Power supply ORing and redundancy<\/li>\n
    • Battery backup switchover systems<\/li>\n
    • Industrial 24V bus protection<\/li>\n
    • LED lighting power protection<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM74700QDBVRQ1 from Texas Instruments is an automotive-qualified ideal diode controller that drives an external N-channel MOSFET to emulate a near-ideal Schottky diode. In a SOT-23-6 package, it provides reverse polarity protection and power supply ORing with only 26mV forward voltage drop. Key Specifications Operating Voltage 3V ~ 65V Forward Voltage Drop 26mV […]<\/p>\n","protected":false},"author":2,"featured_media":2567,"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-2549","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-integrated-circuits-ics","category-power-management-ics-pmic","chip_brand-ti"],"acf":{"brief_explanation":"Automotive ideal diode controller, 65V, 26mV drop, AEC-Q100, SOT-23-6","date_code":"","package_case":"SOT-23-6 (2.9 x 1.6 x 1.1 mm)","in_stock":7890,"datasheet":"https:\/\/www.ti.com\/product\/LM74700-Q1","price":"$0.60 @ 1ku","product_introduction":"The LM74700QDBVRQ1 is an automotive-qualified ideal diode controller from Texas Instruments that drives an external N-channel MOSFET to emulate an ideal diode with just 26mV forward voltage drop. AEC-Q100 Grade 1 qualified, it operates from 3V to 65V, covering the full automotive battery voltage range including load dump transients. The controller regulates the MOSFET gate to maintain 26mV across the MOSFET during forward conduction, automatically turning off the MOSFET within 0.5us when reverse current is detected. This eliminates the power dissipation and voltage drop of conventional Schottky diodes.","working_principle":"The LM74700 monitors the voltage across the external N-channel MOSFET between the ANODE and CATHODE pins. When forward current flows (ANODE > CATHODE), the controller drives the GATE pin 12V above ANODE to fully enhance the MOSFET, achieving near-zero voltage drop. A regulation loop maintains 26mV across the MOSFET for smooth current handling. When reverse current is detected (CATHODE > ANODE), the gate is pulled low within 0.5us, blocking reverse current. An integrated charge pump provides the gate drive voltage above the anode supply rail without external components.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>GATE<\/td>Output<\/td>MOSFET gate drive<\/td><\/tr>
      2<\/td>CATHODE<\/td>Input<\/td>Sense output \/ MOSFET drain<\/td><\/tr>
      3<\/td>EN<\/td>Input<\/td>Enable (active high)<\/td><\/tr>
      4<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>
      5<\/td>VIN<\/td>Input<\/td>Supply input (3-65V)<\/td><\/tr>
      6<\/td>ANODE<\/td>Input<\/td>Sense input \/ MOSFET source<\/td><\/tr><\/table>","application_scenarios":"
      • Automotive 12V\/24V battery reverse polarity protection<\/li>
      • Redundant power supply ORing in ADAS systems<\/li>
      • Industrial 24V bus reverse current blocking<\/li>
      • Battery backup hot-swap protection<\/li>
      • LED driver supply polarity protection<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>LM74701QDBVRQ1<\/td>SOT-23-6<\/td>Higher gate drive, 65V<\/td><\/tr>
        Analog Devices<\/td>LTC4359IMS8#PBF<\/td>8-MSOP<\/td>Ideal diode controller, 80V<\/td><\/tr>
        Maxim<\/td>MAX16141<\/td>6-TDFN<\/td>Ideal diode, 5.5V-60V<\/td><\/tr>
        Infineon<\/td>BTS50015-1TAE<\/td>TO-252<\/td>Smart high-side switch alternative<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/2549","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=2549"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/2549\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media\/2567"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=2549"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=2549"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=2549"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=2549"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}