{"id":3530,"date":"2026-06-06T10:01:23","date_gmt":"2026-06-06T10:01:23","guid":{"rendered":"https:\/\/materialparts.com\/l6920d\/"},"modified":"2026-06-06T10:01:23","modified_gmt":"2026-06-06T10:01:23","slug":"l6920d","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/l6920d\/","title":{"rendered":"L6920D"},"content":{"rendered":"

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

The L6920D from STMicroelectronics is a high-efficiency step-up DC-DC converter designed for battery-powered applications. Operating from 0.6V to 5.5V input, it can start up from 1.0V and delivers up to 1A output current. With a synchronous rectifier replacing the external Schottky diode, it achieves up to 94% efficiency. Housed in a TSSOP-8 package.<\/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
\u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n0.6V – 5.5V<\/td>\n<\/tr>\n
Start-up Voltage<\/td>\n1.0V<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u062e\u0631\u062c<\/td>\n1.0V – 5.2V (adjustable)<\/td>\n<\/tr>\n
Switch Current<\/td>\n1A<\/td>\n<\/tr>\n
Efficiency<\/td>\nUp to 94%<\/td>\n<\/tr>\n
\u062a\u0631\u062f\u062f \u0627\u0644\u062a\u062d\u0648\u064a\u0644<\/td>\n500 kHz<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0647\u062f\u0626\u0629<\/td>\n10 uA (no-switch mode)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nTSSOP-8<\/td>\n<\/tr>\n
Operating Temp<\/td>\n-25 to 85 C<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Ultra-low start-up voltage of 1.0V for single-cell battery operation<\/li>\n
  • Internal synchronous rectifier eliminates external Schottky diode<\/li>\n
  • Up to 94% efficiency for extended battery life<\/li>\n
  • Adjustable output voltage from 1.0V to 5.2V<\/li>\n
  • Low quiescent current of 10 uA in no-switch mode<\/li>\n
  • Internal soft-start and current limit protection<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Single-cell alkaline\/NiMH battery-powered devices<\/li>\n
    • Portable instruments and handheld devices<\/li>\n
    • USB-powered peripherals<\/li>\n
    • Wireless sensor nodes<\/li>\n
    • MP3 players and portable audio<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The L6920D from STMicroelectronics is a high-efficiency step-up DC-DC converter designed for battery-powered applications. Operating from 0.6V to 5.5V input, it can start up from 1.0V and delivers up to 1A output current. With a synchronous rectifier replacing the external Schottky diode, it achieves up to 94% efficiency. Housed in a TSSOP-8 package. […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[31,13],"tags":[],"chip_brand":[142],"class_list":["post-3530","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","chip_brand-st"],"acf":{"brief_explanation":"Step-up DC-DC, 0.6-5.5V in, 1A switch, 94% eff, sync rect, TSSOP-8","date_code":"","package_case":"TSSOP-8 (3.0 x 4.4 mm)","in_stock":5657,"datasheet":"https:\/\/www.st.com\/resource\/en\/datasheet\/l6920d.pdf","price":"$1.20 @ 1ku","product_introduction":"The L6920D from STMicroelectronics is a high-efficiency step-up DC-DC converter designed for battery-powered applications. It operates from input voltages as low as 0.6V and can start up from 1.0V, making it ideal for single-cell alkaline or NiMH battery systems. The integrated synchronous rectifier replaces the external Schottky diode, achieving up to 94% efficiency and reducing component count. With adjustable output from 1.0V to 5.2V, 500 kHz switching frequency, and only 10 uA quiescent current in no-switch mode, it maximizes battery life in portable applications.","working_principle":"The L6920D uses a current-mode PWM boost converter topology with an integrated N-channel MOSFET switch and P-channel synchronous rectifier. During the switch on-time, the inductor current ramps up, storing energy in the magnetic field. When the switch turns off, the synchronous rectifier conducts, transferring energy to the output capacitor and load. The current-mode control loop provides fast transient response and cycle-by-cycle current limiting. The synchronous rectifier replaces the conventional Schottky diode, reducing forward voltage drop and significantly improving efficiency.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>SHDN<\/td>Input<\/td>Shutdown control (active low)<\/td><\/tr>
      2<\/td>LBO<\/td>Output<\/td>Battery low detector output<\/td><\/tr>
      3<\/td>LBI<\/td>Input<\/td>Battery low detector input<\/td><\/tr>
      4<\/td>GND<\/td>Ground<\/td>Ground<\/td><\/tr>
      5<\/td>FB<\/td>Input<\/td>Feedback voltage (1.23V ref)<\/td><\/tr>
      6<\/td>OUT<\/td>Power<\/td>Output \/ sync rect drain<\/td><\/tr>
      7<\/td>SW<\/td>Power<\/td>Switch pin - inductor<\/td><\/tr>
      8<\/td>VIN<\/td>Power<\/td>Input supply voltage<\/td><\/tr><\/table>","application_scenarios":"
      • Single-cell battery devices: Boost 1.2V NiMH or 1.5V alkaline to 3.3V\/5V<\/li>
      • Portable instruments: Handheld devices requiring efficient low-voltage power<\/li>
      • Wireless sensors: Battery-operated IoT nodes<\/li>
      • USB peripherals: Boost 3.3V to 5V<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>TPS61200<\/td>QFN-10<\/td>0.3V start, 1.3A sync boost<\/td><\/tr>
        TI<\/td>TPS61070<\/td>SOT-23-6<\/td>0.9V start, 600mA boost<\/td><\/tr>
        Maxim<\/td>MAX8815<\/td>TQFN-10<\/td>0.7V start, 1A sync boost<\/td><\/tr>
        Richtek<\/td>RT4812<\/td>WDFN-8<\/td>0.6V start, sync boost<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/3530","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=3530"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/3530\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=3530"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=3530"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=3530"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=3530"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}