{"id":11137,"date":"2026-07-24T14:06:11","date_gmt":"2026-07-24T14:06:11","guid":{"rendered":"https:\/\/ic-vendor.com\/lt3756iud\/"},"modified":"2026-07-24T14:06:11","modified_gmt":"2026-07-24T14:06:11","slug":"lt3756iud","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/lt3756iud\/","title":{"rendered":"LT3756IUD"},"content":{"rendered":"

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

The Analog Devices LT3756IUD is a high-voltage DC\/DC controller designed for driving high-current LEDs. Operating from a 6 V to 100 V input range, it supports Boost, Buck Mode, Buck-Boost Mode, SEPIC, and Flyback topologies with up to 3000:1 True Color PWM dimming.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n
\u8f93\u5165\u7535\u538b<\/td>\n6 V to 100 V<\/td>\n<\/tr>\n
Max Output Voltage<\/td>\n100 V<\/td>\n<\/tr>\n
\u5f00\u5173\u9891\u7387<\/td>\n100 kHz to 1 MHz<\/td>\n<\/tr>\n
PWM Dimming<\/td>\n3000:1 True Color<\/td>\n<\/tr>\n
\u7535\u6d41\u611f\u5e94<\/td>\n100 mV high-side<\/td>\n<\/tr>\n
\u5173\u673a\u7535\u6d41<\/td>\n<1 \u00b5A<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to +125\u00b0C<\/td>\n<\/tr>\n
\u8d44\u683c<\/td>\nAEC-Q100<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\n16-Lead QFN (3x3x0.75mm w\/ EP)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Wide 6 V to 100 V input range<\/li>\n
  • Multiple topology support (Boost, Buck, SEPIC, Flyback)<\/li>\n
  • 3000:1 True Color PWM dimming<\/li>\n
  • CTRL analog dimming capability<\/li>\n
  • AEC-Q100 automotive qualified<\/li>\n
  • Programmable switching frequency<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • High-power LED lighting (30W+ headlamp)<\/li>\n
    • Constant-current \/ constant-voltage regulation<\/li>\n
    • Battery charging systems<\/li>\n
    • Automotive LED drivers<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The Analog Devices LT3756IUD is a high-voltage DC\/DC controller designed for driving high-current LEDs. Operating from a 6 V to 100 V input range, it supports Boost, Buck Mode, Buck-Boost Mode, SEPIC, and Flyback topologies with up to 3000:1 True Color PWM dimming. Key Specifications Input Voltage 6 V to 100 V Max […]<\/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":[13,33],"tags":[2408],"chip_brand":[165],"class_list":["post-11137","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-led-driver-ics","tag-lt3756iud","chip_brand-adi"],"acf":{"brief_explanation":"DC\/DC LED controller, 6-100V input, 100V output, 100kHz-1MHz, 3000:1 PWM dimming, AEC-Q100, QFN-16","date_code":"","package_case":"QFN-16 (3x3x0.75mm w\/ EP)","in_stock":2409,"datasheet":"https:\/\/www.analog.com\/media\/en\/technical-documentation\/data-sheets\/LT3756-3756-1-3756-2.pdf","price":"","product_introduction":"The LT3756IUD is a high-voltage, high-side current sensing DC\/DC controller specifically designed to drive high-current LEDs. It operates from an input voltage range of 6 V to 100 V and can produce output voltages up to 100 V. The controller supports multiple power topologies including Boost, Buck Mode, Buck-Boost Mode, SEPIC, and Flyback. It features 3000:1 True Color PWM dimming for accurate LED color control and analog dimming via the CTRL pin. The device is AEC-Q100 qualified for automotive applications.","working_principle":"The LT3756IUD uses a current mode control architecture with a high-side current sense resistor (100 mV threshold) to regulate LED current accurately. An internal MOSFET driver drives an external N-channel MOSFET. The switching frequency is programmable via an external resistor from 100 kHz to 1 MHz. PWM dimming is achieved through an external PWM MOSFET switch in series with the LED string, providing up to 3000:1 dimming ratio without color shift. The INTVCC internal 7.15 V regulator powers the gate driver.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>
      1<\/td>VIN<\/td>Power<\/td>Input supply<\/td><\/tr>
      2<\/td>SHDN<\/td>Digital<\/td>Shutdown control<\/td><\/tr>
      3<\/td>CTRL<\/td>Analog<\/td>Analog dimming input<\/td><\/tr>
      4<\/td>PWM<\/td>Digital<\/td>PWM dimming input<\/td><\/tr>
      5<\/td>IS<\/td>Analog<\/td>Current sense input<\/td><\/tr>
      6<\/td>FB<\/td>Analog<\/td>Output voltage feedback<\/td><\/tr>
      7<\/td>RT<\/td>Analog<\/td>Frequency timing resistor<\/td><\/tr>
      8<\/td>GND<\/td>Ground<\/td>Ground<\/td><\/tr>
      9-16<\/td>Other<\/td>Mixed<\/td>Gate drive, compensation, INTVCC<\/td><\/tr><\/table>","application_scenarios":"
      • Automotive LED headlamps (30W+ white LED)<\/li>
      • Constant-current and constant-voltage power supplies<\/li>
      • Battery charging and backup systems<\/li>
      • Industrial LED lighting<\/li>
      • General high-voltage DC\/DC conversion<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        LT3756-1<\/td>Analog Devices<\/td>Fixed 100mV sense threshold<\/td><\/tr>
        LT3756-2<\/td>Analog Devices<\/td>Fixed 50mV sense threshold<\/td><\/tr>
        LT3761<\/td>Analog Devices<\/td>Lower voltage, 60V max input<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/11137","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/comments?post=11137"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/11137\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=11137"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=11137"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=11137"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=11137"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}