{"id":6738,"date":"2026-06-21T10:13:04","date_gmt":"2026-06-21T10:13:04","guid":{"rendered":"https:\/\/materialparts.com\/lt8614eudctrpbf\/"},"modified":"2026-06-21T10:13:04","modified_gmt":"2026-06-21T10:13:04","slug":"lt8614eudctrpbf","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/lt8614eudctrpbf\/","title":{"rendered":"LT8614EUDC#TRPBF"},"content":{"rendered":"

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

The LT8614EUDC#TRPBF from Analog Devices is a 42 V, 4 A synchronous step-down Silent Switcher regulator with ultralow 2.5 \u00b5A quiescent current. It features Silent Switcher architecture to minimize EMI emissions while delivering up to 96% efficiency at frequencies up to 3 MHz. The device is housed in an 18-lead 3 mm x 4 mm QFN package with exposed pad and is AEC-Q100 qualified for automotive applications.<\/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\n\n
\u0627\u0644\u0637\u0648\u0628\u0648\u0644\u0648\u062c\u064a\u0627<\/td>\nSynchronous Buck (Silent Switcher)<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n3.4 V to 42 V<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u062e\u0631\u062c<\/td>\n0.97 V to V_IN (Adjustable)<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n4 A<\/td>\n<\/tr>\n
\u062a\u0631\u062f\u062f \u0627\u0644\u062a\u062d\u0648\u064a\u0644<\/td>\n200 kHz to 3 MHz (Adjustable)<\/td>\n<\/tr>\n
Quiescent Current (Burst Mode)<\/td>\n2.5 \u00b5A<\/td>\n<\/tr>\n
Min On-Time<\/td>\n30 ns<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u062a\u0633\u0631\u0628<\/td>\n125 mV at 1 A<\/td>\n<\/tr>\n
Reference Voltage<\/td>\n0.97 V<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nQFN-18 (3 x 4 x 0.75 mm, EP)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40\u00b0C to 125\u00b0C<\/td>\n<\/tr>\n
\u0627\u0644\u0645\u0624\u0647\u0644\u0627\u062a<\/td>\nAEC-Q100<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Silent Switcher architecture for ultralow EMI emissions<\/li>\n
  • Up to 96% efficiency at 1 MHz, 12 V_IN to 5 V_OUT<\/li>\n
  • 2.5 \u00b5A quiescent current in Burst Mode with output in regulation<\/li>\n
  • Output ripple below 10 mV_P-P at all loads<\/li>\n
  • 30 ns minimum switch on-time for high V_IN to low V_OUT<\/li>\n
  • Low dropout: 125 mV at 1 A under all conditions<\/li>\n
  • Safe operation during inductor saturation in overload<\/li>\n
  • Adjustable and synchronizable frequency: 200 kHz to 3 MHz<\/li>\n
  • Accurate 1 V enable pin threshold for programmable UVLO<\/li>\n
  • Internal compensation, soft-start, and output tracking<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Automotive and industrial power supplies<\/li>\n
    • General purpose step-down converters<\/li>\n
    • GSM and RF power supplies with low EMI<\/li>\n
    • Post-regulation from 12 V \/ 24 V \/ 48 V buses<\/li>\n
    • Battery-powered systems requiring ultralow standby current<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LT8614EUDC#TRPBF from Analog Devices is a 42 V, 4 A synchronous step-down Silent Switcher regulator with ultralow 2.5 \u00b5A quiescent current. It features Silent Switcher architecture to minimize EMI emissions while delivering up to 96% efficiency at frequencies up to 3 MHz. The device is housed in an 18-lead 3 mm x […]<\/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-6738","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","chip_brand-adi"],"acf":{"brief_explanation":"42V 4A Silent Switcher Buck Regulator, 2.5uA IQ, 3MHz, QFN-18, AEC-Q100","date_code":"","package_case":"QFN-18 (3 x 4 x 0.75 mm, exposed pad)","in_stock":3215,"datasheet":"https:\/\/www.analog.com\/media\/en\/technical-documentation\/data-sheets\/lt8614.pdf","price":"$5.83 @ 1ku","product_introduction":"The LT8614EUDC#TRPBF from Analog Devices (formerly Linear Technology) is a 42 V, 4 A synchronous step-down regulator featuring Silent Switcher architecture designed to minimize EMI emissions while delivering high efficiency at frequencies up to 3 MHz. Assembled in a compact 3 mm x 4 mm QFN package, the monolithic construction integrates power switches and all necessary circuitry for minimal PCB footprint. The ultralow 2.5 \u00b5A quiescent current in Burst Mode\u2014with output in full regulation\u2014enables highest efficiency at very small load currents. Output ripple remains below 10 mV_P-P from zero to full current. The 30 ns minimum on-time allows high V_IN to low V_OUT conversion at high frequencies.","working_principle":"The LT8614 uses a constant-frequency peak current-mode control architecture with integrated high-side and low-side N-channel MOSFET switches (85 mOhm top, 40 mOhm bottom). The Silent Switcher architecture distributes the input current through symmetrical inductor pairs and utilizes copper pillars in the flip-chip package to minimize parasitic inductance and thus radiated EMI. The oscillator frequency is programmed via an external RT resistor (200 kHz to 3 MHz). In Burst Mode operation, the device delivers pulses to maintain regulation and then enters sleep mode where both MOSFETs and most circuitry shut off, achieving 2.5 \u00b5A IQ. The SYNC\/MODE pin allows external clock synchronization and selection of Burst Mode or pulse-skipping mode. The TR\/SS pin provides soft-start and output tracking. The EN\/UV pin with 1 V threshold enables programmable undervoltage lockout.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>BST<\/td>Power<\/td>Bootstrap capacitor for top switch<\/td><\/tr>
      2<\/td>SW<\/td>Output<\/td>Switch node output<\/td><\/tr>
      3<\/td>SW<\/td>Output<\/td>Switch node output<\/td><\/tr>
      4<\/td>VIN<\/td>Power<\/td>Input supply voltage<\/td><\/tr>
      5<\/td>VIN<\/td>Power<\/td>Input supply voltage<\/td><\/tr>
      6<\/td>EN\/UV<\/td>Input<\/td>Enable \/ undervoltage lockout (1V threshold)<\/td><\/tr>
      7<\/td>VFB<\/td>Input<\/td>Feedback voltage sense (0.97V reference)<\/td><\/tr>
      8<\/td>RT<\/td>Input<\/td>Frequency set resistor<\/td><\/tr>
      9<\/td>SYNC\/MODE<\/td>I\/O<\/td>External sync \/ mode select<\/td><\/tr>
      10<\/td>PG<\/td>Output<\/td>Power good (open drain)<\/td><\/tr>
      11<\/td>TR\/SS<\/td>I\/O<\/td>Soft-start \/ tracking<\/td><\/tr>
      12<\/td>BIAS<\/td>Power<\/td>Bias supply input<\/td><\/tr>
      13<\/td>INTVCC<\/td>Power<\/td>Internal regulator bypass<\/td><\/tr>
      14<\/td>GND<\/td>Ground<\/td>Signal ground<\/td><\/tr>
      15-18<\/td>GND\/NC<\/td>Ground\/-<\/td>Ground and no-connect<\/td><\/tr>
      Pad<\/td>GND<\/td>Ground<\/td>Exposed thermal pad<\/td><\/tr><\/table>","application_scenarios":"
      • Automotive infotainment and ADAS power supplies<\/li>
      • Industrial 24V\/48V bus step-down converters<\/li>
      • GSM and RF power systems requiring low EMI<\/li>
      • Battery-powered IoT with ultralow standby current<\/li>
      • Post-regulation for high-voltage front-end supplies<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Analog Devices<\/td>LT8614IUDC#TRPBF<\/td>QFN-18<\/td>-40\u00b0C to 125\u00b0C I-grade<\/td><\/tr>
        Analog Devices<\/td>LT8645SIV#TRPBF<\/td>QFN-20<\/td>42V, 5A Silent Switcher 2<\/td><\/tr>
        Texas Instruments<\/td>LM53603NQDSXR<\/td>QFN-12<\/td>36V, 3A, low EMI buck<\/td><\/tr>
        Texas Instruments<\/td>TPS54560DDAR<\/td>HSOIC-8<\/td>42V, 5A buck converter<\/td><\/tr>
        Monolithic Power<\/td>MP8759GD-Z<\/td>QFN-18<\/td>36V, 5A synchronous buck<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6738","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=6738"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6738\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=6738"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=6738"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=6738"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=6738"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}