{"id":6587,"date":"2026-06-18T15:27:19","date_gmt":"2026-06-18T15:27:19","guid":{"rendered":"https:\/\/materialparts.com\/sy8009aaac\/"},"modified":"2026-06-18T15:27:19","modified_gmt":"2026-06-18T15:27:19","slug":"sy8009aaac","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/sy8009aaac\/","title":{"rendered":"SY8009AAAC"},"content":{"rendered":"

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

The SY8009AAAC is a high-efficiency synchronous step-down DC-DC regulator from Silergy Corp, capable of delivering up to 1.5A output current. Operating over a 3V to 5.5V input range with 1.5 MHz switching frequency, it integrates both main and synchronous switches with very low RDS(ON) to minimize conduction loss in a tiny SOT-23-5 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\n\n
\u0627\u0644\u0637\u0648\u0628\u0648\u0644\u0648\u062c\u064a\u0627<\/td>\nSynchronous Buck<\/td>\n<\/tr>\n
\u0646\u0637\u0627\u0642 \u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n3V to 5.5V<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n1.5A<\/td>\n<\/tr>\n
\u062a\u0631\u062f\u062f \u0627\u0644\u062a\u062d\u0648\u064a\u0644<\/td>\n1.5 MHz<\/td>\n<\/tr>\n
PFET RDS(ON)<\/td>\n180 m\u03a9<\/td>\n<\/tr>\n
NFET RDS(ON)<\/td>\n120 m\u03a9<\/td>\n<\/tr>\n
Reference Voltage<\/td>\n0.6V<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0647\u062f\u0626\u0629<\/td>\n80 \u00b5A<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0625\u064a\u0642\u0627\u0641 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n0.1 \u00b5A (typical)<\/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 +85 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOT-23-5<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Ultra-low RDS(ON) internal switches: 180\/120 m\u03a9<\/li>\n
  • 1.5 MHz high switching frequency minimizes external component size<\/li>\n
  • Internal soft-start limits inrush current<\/li>\n
  • 100% duty cycle operation for lowest dropout<\/li>\n
  • Adjustable output via external resistor divider<\/li>\n
  • Over-current and thermal shutdown protection<\/li>\n
  • RoHS compliant and halogen-free<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • LCD TV and set-top box power<\/li>\n
    • Net PC and mini-notebook power rails<\/li>\n
    • Access point and router power supplies<\/li>\n
    • Portable device point-of-load regulation<\/li>\n
    • Battery-powered system DC-DC conversion<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The SY8009AAAC is a high-efficiency synchronous step-down DC-DC regulator from Silergy Corp, capable of delivering up to 1.5A output current. Operating over a 3V to 5.5V input range with 1.5 MHz switching frequency, it integrates both main and synchronous switches with very low RDS(ON) to minimize conduction loss in a tiny SOT-23-5 package. […]<\/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":[292],"class_list":["post-6587","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","chip_brand-silergy"],"acf":{"brief_explanation":"Synchronous Buck DC-DC, 1.5A, 3-5.5V input, 1.5MHz, SOT-23-5","date_code":"","package_case":"SOT-23-5 (2.9\u00d71.6\u00d71.1 mm)","in_stock":9834,"datasheet":"https:\/\/datasheet.lcsc.com\/lcsc\/1810161822_Silergy-Corp-SY8009AAAC_C55133.pdf","price":"$0.22 @ 1ku","product_introduction":"The SY8009AAAC from Silergy Corp is a high-efficiency synchronous step-down DC-DC regulator delivering up to 1.5A output. It integrates both high-side and low-side MOSFET switches with very low RDS(ON) to minimize conduction losses. The 1.5 MHz switching frequency enables the use of small external inductors and capacitors, resulting in a compact solution footprint ideal for space-constrained applications.","working_principle":"The SY8009AAAC operates as a current-mode synchronous buck converter. The internal high-side PFET and low-side NFET switches alternate to step down the input voltage to the desired output. A current-mode control loop provides fast transient response and cycle-by-cycle current limiting. The 0.6V reference voltage is compared with the FB pin voltage through the error amplifier, which adjusts the PWM duty cycle. Internal soft-start gradually ramps the output to prevent inrush current. At 100% duty cycle, the high-side switch stays on continuously for lowest dropout operation.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      1<\/td>EN<\/td>Input<\/td>Enable control (pull high to turn on)<\/td><\/tr>\n
      2<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>\n
      3<\/td>LX<\/td>Output<\/td>Inductor switch node<\/td><\/tr>\n
      4<\/td>IN<\/td>Input<\/td>Input supply (decouple with \u22651\u00b5F ceramic)<\/td><\/tr>\n
      5<\/td>FB<\/td>Input<\/td>Output feedback (Vout=0.6\u00d7(1+R1\/R2))<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • LCD TV and set-top box point-of-load power conversion<\/li>\n
      • Mini-notebook PC and netbook power rails<\/li>\n
      • Wi-Fi access point and router DC-DC regulation<\/li>\n
      • Portable battery-powered devices requiring efficient buck conversion<\/li>\n
      • USB-powered device voltage regulation<\/li>\n<\/ul>","alternative_models":"\n
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>\n
        Silergy<\/td>SY8009BABC<\/td>SOT-23-6<\/td>2A version with 6-pin package<\/td><\/tr>\n
        Silergy<\/td>SY8089AAAC<\/td>SOT-23-5<\/td>2A, 2.7-5.5V input, pin-compatible<\/td><\/tr>\n
        TI<\/td>TPS562201DDCR<\/td>SOT-23-6<\/td>2A buck, 4.5-17V input range<\/td><\/tr>\n
        MPS<\/td>MP2143DJ<\/td>SOT-23-6<\/td>2A synchronous buck<\/td><\/tr>\n
        Richtek<\/td>RT8059GS<\/td>SOT-23-5<\/td>1A synchronous buck, 1.5MHz<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6587","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=6587"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6587\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=6587"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=6587"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=6587"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=6587"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}