{"id":7445,"date":"2026-06-24T06:52:29","date_gmt":"2026-06-24T06:52:29","guid":{"rendered":"https:\/\/materialparts.com\/ltc7801eufdtrpbf\/"},"modified":"2026-06-24T06:52:29","modified_gmt":"2026-06-24T06:52:29","slug":"ltc7801eufdtrpbf","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/ltc7801eufdtrpbf\/","title":{"rendered":"LTC7801EUFD#TRPBF"},"content":{"rendered":"

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

The LTC7801EUFD#TRPBF from Analog Devices is a 150V, low-IQ synchronous step-down DC\/DC controller in a 24-pin QFN (4x5mm) package. Driving all N-channel MOSFETs with programmable 5-10V gate drive, it achieves 40\u03bcA no-load quiescent current and supports output voltages from 0.8V to 60V for automotive and industrial power systems.<\/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\n\n
\u0646\u0637\u0627\u0642 \u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n4V to 140V<\/td>\n<\/tr>\n
Output Voltage Range<\/td>\n0.8V to 60V<\/td>\n<\/tr>\n
No-Load IQ<\/td>\n40 \u03bcA<\/td>\n<\/tr>\n
Shutdown IQ<\/td>\n10 \u03bcA<\/td>\n<\/tr>\n
\u062a\u0631\u062f\u062f \u0627\u0644\u062a\u062d\u0648\u064a\u0644<\/td>\n50kHz – 900kHz (program)<\/td>\n<\/tr>\n
Synchronizable Frequency<\/td>\n75kHz – 850kHz<\/td>\n<\/tr>\n
Gate Drive Level<\/td>\n5V to 10V (OPTI-DRIVE)<\/td>\n<\/tr>\n
Reference Voltage<\/td>\n0.8V (1% accuracy)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nQFN-24 (4x5mm)<\/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<\/table>\n

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    \n
  • Wide 4V to 140V input voltage range with 150V absolute maximum<\/li>\n
  • Ultra-low 40\u03bcA no-load quiescent current for battery-powered systems<\/li>\n
  • Programmable gate drive level (5-10V) via OPTI-DRIVE for efficiency optimization<\/li>\n
  • Integrated bootstrap switch eliminates external bootstrap diode<\/li>\n
  • 100% duty cycle operation with internal charge pump<\/li>\n
  • Selectable continuous, pulse-skipping, or Burst Mode operation<\/li>\n
  • Programmable input overvoltage lockout and power good output<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Automotive and industrial 48V\/12V power distribution systems<\/li>\n
    • High-voltage battery-operated systems and telecom power<\/li>\n
    • LED lighting power supplies and battery chargers<\/li>\n
    • Power tools and portable industrial equipment<\/li>\n
    • Distributed power architectures in communications infrastructure<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LTC7801EUFD#TRPBF from Analog Devices is a 150V, low-IQ synchronous step-down DC\/DC controller in a 24-pin QFN (4x5mm) package. Driving all N-channel MOSFETs with programmable 5-10V gate drive, it achieves 40\u03bcA no-load quiescent current and supports output voltages from 0.8V to 60V for automotive and industrial power systems. Key Specifications Input Voltage Range […]<\/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":[31,13],"tags":[],"chip_brand":[165],"class_list":["post-7445","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","chip_brand-adi"],"acf":{"brief_explanation":"150V synchronous buck DC\/DC controller, 40\u03bcA IQ, 5-10V gate drive, QFN-24 (4x5mm)","date_code":"","package_case":"QFN-24 (4 x 5 x 0.75 mm with EP)","in_stock":4867,"datasheet":"https:\/\/www.analog.com\/en\/products\/ltc7801.html","price":".77 @ 1ku","product_introduction":"The LTC7801EUFD#TRPBF is a high-performance synchronous step-down DC\/DC controller from Analog Devices that drives an all N-channel MOSFET power stage from input voltages up to 140V. It utilizes a constant-frequency current mode architecture with phase-lockable frequency up to 850kHz. The OPTI-DRIVE feature allows programmable gate drive voltage from 5V to 10V, enabling use of logic-level or standard-level FETs for maximum efficiency. The integrated bootstrap switch eliminates the need for an external bootstrap diode, while an internal charge pump supports 100% duty cycle operation. With only 40\u03bcA no-load quiescent current and OPTI-LOOP compensation, it is optimized for battery-powered and automotive power systems requiring high efficiency across wide load ranges.","working_principle":"The LTC7801 operates around four key subsystems. (1) The current-mode control loop uses a constant-frequency architecture where the top MOSFET on-time is controlled by the error amplifier output (ITH pin) through a PWM comparator that senses the inductor current via the SENSE+ and SENSE- pins. This provides cycle-by-cycle current limiting and inherent input voltage rejection. (2) The OPTI-DRIVE gate drive subsystem generates programmable 5-10V gate drive from an internal LDO or external NMOS LDO via DRVCC, driving the top and bottom N-channel MOSFETs through the TG and BG outputs with adaptive dead-time control. (3) The charge pump and bootstrap subsystem enable 100% duty cycle operation by maintaining gate drive voltage even when the top MOSFET is continuously on. (4) The mode control subsystem allows selection between continuous conduction, pulse-skipping, and Burst Mode operation via the MODE pin, optimizing efficiency across the entire load range.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>RUN<\/td>Enable\/UVLO programming<\/td><\/tr>
      2<\/td>SENSE+<\/td>Current sense positive input<\/td><\/tr>
      3<\/td>SENSE-<\/td>Current sense negative input<\/td><\/tr>
      4<\/td>ITH<\/td>Error amplifier compensation output<\/td><\/tr>
      5<\/td>FB<\/td>Voltage feedback input (0.8V reference)<\/td><\/tr>
      6<\/td>VOUT<\/td>Output voltage sense for EXTVC LDO<\/td><\/tr>
      7<\/td>PLLIN\/MODE<\/td>PLL sync input or mode selection<\/td><\/tr>
      8-12<\/td>Various<\/td>FREQ, DRVCC, EXTVC, INTVCC, BOOST<\/td><\/tr>
      13<\/td>TG<\/td>Top gate driver output<\/td><\/tr>
      14<\/td>SW<\/td>Switch node<\/td><\/tr>
      15<\/td>BG<\/td>Bottom gate driver output<\/td><\/tr>
      16-24<\/td>Various<\/td>GND, PGOOD, BURST, DRVSET, etc.<\/td><\/tr><\/table>","application_scenarios":"
      • 48V to 12V automotive power distribution in electric vehicles and trucks<\/li>
      • Industrial 24V\/48V to point-of-load buck conversion in factory automation<\/li>
      • Telecom -48V bus to intermediate voltage conversion in base stations<\/li>
      • High-voltage battery-powered tools and portable industrial equipment<\/li>
      • LED lighting drivers requiring wide input range and high efficiency<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        LTC7801EFE#TRPBF<\/td>Analog Devices<\/td>TSSOP-24 package option<\/td><\/tr>
        LTC3891EFE#PBF<\/td>Analog Devices<\/td>60V input, similar architecture<\/td><\/tr>
        LTC3892<\/td>Analog Devices<\/td>Dual channel, 60V input<\/td><\/tr>
        LM5163DDAR<\/td>TI<\/td>100V, integrated MOSFET buck converter<\/td><\/tr>
        MAX17503ATP+<\/td>Maxim<\/td>60V, 2A integrated buck, TSSOP-20<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7445","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=7445"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7445\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=7445"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=7445"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=7445"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=7445"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}