{"id":6240,"date":"2026-06-12T10:03:21","date_gmt":"2026-06-12T10:03:21","guid":{"rendered":"https:\/\/materialparts.com\/rt8279gsp\/"},"modified":"2026-06-12T10:03:21","modified_gmt":"2026-06-12T10:03:21","slug":"rt8279gsp","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/rt8279gsp\/","title":{"rendered":"RT8279GSP"},"content":{"rendered":"

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

The RT8279GSP from Richtek is a 5A, 36V, 500kHz step-down (buck) DC-DC converter with an integrated 110mOhm N-channel MOSFET. It features current-mode control with internal compensation, providing a compact and efficient power conversion solution in an SOP-8 (Exposed Pad) 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
\u0646\u0637\u0627\u0642 \u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n5.5V to 36V<\/td>\n<\/tr>\n
Output Voltage Range<\/td>\n1.222V to 26V (adjustable)<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n5A (continuous)<\/td>\n<\/tr>\n
\u062a\u0631\u062f\u062f \u0627\u0644\u062a\u062d\u0648\u064a\u0644<\/td>\n500 kHz (fixed)<\/td>\n<\/tr>\n
Internal MOSFET RDS(ON)<\/td>\n110 mOhm<\/td>\n<\/tr>\n
Reference Voltage<\/td>\n1.222V<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0625\u064a\u0642\u0627\u0641 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n25 uA (typ)<\/td>\n<\/tr>\n
Efficiency<\/td>\nUp to 90%<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40 to 85 C<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOP-8 (Exposed Pad)<\/td>\n<\/tr>\n<\/table>\n

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    \n
  • Integrated 110mOhm N-channel MOSFET for 5A output<\/li>\n
  • Internal soft-start and compensation<\/li>\n
  • Cycle-by-cycle over-current protection<\/li>\n
  • Thermal shutdown protection<\/li>\n
  • 25uA low shutdown quiescent current<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • \u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0637\u0627\u0642\u0629 \u0627\u0644\u0645\u0648\u0632\u0639\u0629<\/li>\n
    • Battery chargers and power banks<\/li>\n
    • DSL modems and networking equipment<\/li>\n
    • Linear regulator pre-regulation<\/li>\n
    • Automotive and industrial power supplies<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The RT8279GSP from Richtek is a 5A, 36V, 500kHz step-down (buck) DC-DC converter with an integrated 110mOhm N-channel MOSFET. It features current-mode control with internal compensation, providing a compact and efficient power conversion solution in an SOP-8 (Exposed Pad) package. Key Specifications Input Voltage Range 5.5V to 36V Output Voltage Range 1.222V to […]<\/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":[203],"class_list":["post-6240","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","chip_brand-richtek"],"acf":{"brief_explanation":"5A 36V 500kHz step-down DC-DC converter with integrated 110mOhm MOSFET in SOP-8 EP","date_code":"","package_case":"SOP-8 Exposed Pad (4.9 x 3.9 x 1.5mm)","in_stock":13013,"datasheet":"https:\/\/www.richtek.com\/assets\/product_file\/RT8279\/DS8279-01.pdf","price":"$0.85 @ 1ku","product_introduction":"The RT8279GSP is a high-efficiency step-down DC-DC converter from Richtek Technology featuring an integrated 110mOhm N-channel MOSFET capable of delivering up to 5A of continuous output current. The device operates from a 5.5V to 36V input range and produces an adjustable output voltage from 1.222V to 26V. Using fixed 500kHz switching frequency with current-mode control and internal compensation, it simplifies design by minimizing external component count while maintaining excellent transient response and stability.","working_principle":"The RT8279GSP employs a current-mode control architecture for its buck converter operation. **Power Stage**: The integrated 110mOhm N-channel MOSFET switches at 500kHz, charging and discharging the external inductor to transfer energy from input to output. An external bootstrap diode and capacitor drive the high-side switch. **Control Loop**: Current-mode control compares the inductor current ramp against the error amplifier output voltage. Internal Type-II compensation eliminates the need for external compensation components while ensuring stability across operating conditions. **Protection Subsystem**: Cycle-by-cycle current limiting protects against overloads. Thermal shutdown disables switching when junction temperature exceeds approximately 160C. **Soft-Start**: An internal soft-start circuit gradually ramps the reference voltage, limiting inrush current during startup.","pin_description":"
      Pin<\/th>Name<\/th>Description<\/th><\/tr>
      1<\/td>BOOT<\/td>Bootstrap capacitor connection for high-side gate driver<\/td><\/tr>
      2<\/td>VIN<\/td>Input supply voltage (5.5V to 36V)<\/td><\/tr>
      3<\/td>LX<\/td>Switching node (inductor connection)<\/td><\/tr>
      4<\/td>GND<\/td>Power ground<\/td><\/tr>
      5<\/td>FB<\/td>Feedback voltage input (reference 1.222V)<\/td><\/tr>
      6<\/td>EN<\/td>Enable input (active high, pull low to shutdown)<\/td><\/tr>
      7<\/td>COMP<\/td>Internal compensation node<\/td><\/tr>
      8<\/td>VCC<\/td>Internal 5V LDO output (decouple with 1uF cap)<\/td><\/tr>
      EP<\/td>Exposed Pad<\/td>Thermal pad, connect to GND plane<\/td><\/tr><\/table>","application_scenarios":"
      • Industrial Power: 24V bus to 5V\/3.3V POL conversion for PLCs and motor controllers<\/li>
      • Automotive: 12V battery to 5V or 3.3V supply for infotainment and ADAS systems<\/li>
      • Battery Charging: CC-CV charging profiles for Li-ion packs from 12V-24V sources<\/li>
      • Networking: DSL modem and router power supplies from 12V wall adapters<\/li>
      • Pre-Regulation: Efficient front-end for downstream LDO regulators<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        LMR16030PDDAR<\/td>TI<\/td>3A, 40V, 2.1MHz, smaller inductor<\/td><\/tr>
        MP8759GD-Z<\/td>MPS<\/td>4A, 36V, 500kHz, QFN package<\/td><\/tr>
        TPS54560DDAR<\/td>TI<\/td>5A, 60V, 500kHz, wider input<\/td><\/tr>
        AP65509SP-13<\/td>Diodes Inc<\/td>5A, 36V, 500kHz, SOP-8<\/td><\/tr>
        XL4015E1<\/td>XLSEMI<\/td>5A, 36V, 180kHz, TO-263<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6240","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=6240"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6240\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=6240"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=6240"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=6240"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=6240"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}