{"id":10397,"date":"2026-07-19T13:07:52","date_gmt":"2026-07-19T13:07:52","guid":{"rendered":"https:\/\/ic-vendor.com\/mic5209-3-3ystr-2\/"},"modified":"2026-07-19T13:07:52","modified_gmt":"2026-07-19T13:07:52","slug":"mic5209-3-3ystr-2","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/ar\/mic5209-3-3ystr-2\/","title":{"rendered":"MIC5209-3.3YSTR"},"content":{"rendered":"

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

The Microchip MIC5209-3.3YSTR is a 500mA low-noise LDO voltage regulator with a fixed 3.3V output in a SOT-223 package. It features very low dropout voltage (typically 10mV at light loads, 350mV at full load), better than 1% output voltage accuracy, and ultra-low noise capability. Designed for battery-powered and handheld devices, it includes an enable\/shutdown pin, reversed-battery protection, current limiting, and overtemperature shutdown. The device operates from 2.5V to 16V input over the -40\u00b0C to +125\u00b0C temperature range.<\/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\u062e\u0631\u062c<\/td>\n3.3V fixed<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n500 \u0645\u0644\u0644\u064a \u0623\u0645\u0628\u064a\u0631<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u062a\u0633\u0631\u0628<\/td>\n350mV typical at 500mA<\/td>\n<\/tr>\n
\u0646\u0637\u0627\u0642 \u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n2.5 \u0641\u0648\u0644\u062a \u0625\u0644\u0649 16 \u0641\u0648\u0644\u062a<\/td>\n<\/tr>\n
\u062f\u0642\u0629 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n+\/-1%<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0647\u062f\u0626\u0629<\/td>\n80uA typical<\/td>\n<\/tr>\n
PSRRR<\/td>\nUltra-low noise with bypass capacitor<\/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
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOT-223<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Guaranteed 500mA output over full temperature range<\/li>\n
  • Low 500mV maximum dropout at full load<\/li>\n
  • Better than 1% output voltage accuracy<\/li>\n
  • Ultra-low noise capability with bypass pin<\/li>\n
  • Low ground current (80uA typical)<\/li>\n
  • Enable\/shutdown pin for power management<\/li>\n
  • Reversed battery protection<\/li>\n
  • Current limiting and thermal shutdown<\/li>\n
  • No-load stability<\/li>\n
  • Low temperature coefficient<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Battery-powered handheld devices<\/li>\n
    • RF and noise-sensitive circuits<\/li>\n
    • Intel Slot 1\/2 processor applications<\/li>\n
    • Portable instrumentation<\/li>\n
    • USB-powered devices<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The Microchip MIC5209-3.3YSTR is a 500mA low-noise LDO voltage regulator with a fixed 3.3V output in a SOT-223 package. It features very low dropout voltage (typically 10mV at light loads, 350mV at full load), better than 1% output voltage accuracy, and ultra-low noise capability. Designed for battery-powered and handheld devices, it includes an […]<\/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":[13,32],"tags":[1697],"chip_brand":[134],"class_list":["post-10397","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo","tag-mic5209-3-3ystr","chip_brand-microchip"],"acf":{"brief_explanation":"500mA LDO, 3.3V fixed, low noise, 350mV dropout, SOT-223","date_code":"","package_case":"SOT-223 (6.5 x 3.5 x 1.6 mm)","in_stock":9374,"datasheet":"https:\/\/ww1.microchip.com\/downloads\/en\/DeviceDoc\/mic5209.pdf","price":"$0.54 @ 1ku","product_introduction":"The Microchip MIC5209-3.3YSTR is an efficient linear voltage regulator with very low dropout voltage and better than 1% output voltage accuracy. Designed especially for handheld, battery-powered devices, the MIC5209 features low ground current to prolong battery life. An enable\/shutdown pin can further improve battery life with near-zero shutdown current. Key features include reversed-battery protection, current limiting, overtemperature shutdown, and ultra-low-noise capability when used with an external bypass capacitor on the BYP pin.","working_principle":"The MIC5209-3.3YSTR operates as a series-pass linear regulator. 1) Reference Subsystem: A precision bandgap reference provides a stable 1.2V reference voltage, trimmed for better than 1% accuracy. 2) Error Amplifier Subsystem: Compares the feedback voltage (from the internal resistor divider setting 3.3V output) with the reference, driving the pass transistor to regulate the output. 3) Pass Element Subsystem: A PNP pass transistor provides low dropout operation; the dropout voltage is the saturation voltage of this transistor, typically 350mV at 500mA. 4) Noise Reduction Subsystem: The BYP pin connects an external capacitor to the reference voltage node, filtering reference noise for ultra-low output noise performance. 5) Protection Subsystem: Current limiting, thermal shutdown, and reverse-battery protection circuitry safeguard the device under fault conditions.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>IN<\/td>Power<\/td>Input voltage (2.5-16V)<\/td><\/tr>
      2<\/td>GND<\/td>Power<\/td>Ground (tab)<\/td><\/tr>
      3<\/td>EN<\/td>Input<\/td>Enable (active-high) \/ Shutdown<\/td><\/tr>
      4<\/td>OUT<\/td>Power<\/td>3.3V regulated output<\/td><\/tr>
      Tab<\/td>GND<\/td>Power<\/td>Ground and thermal pad<\/td><\/tr><\/table>","application_scenarios":"
      • Battery-Powered Devices: Handheld instruments and portable electronics<\/li>
      • RF Systems: Low-noise power for sensitive RF and analog circuits<\/li>
      • USB Devices: 3.3V regulation from 5V USB bus power<\/li>
      • Industrial: Noise-sensitive sensor signal conditioning power<\/li>
      • Automotive: Battery-powered vehicle accessory regulation<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Microchip<\/td>MIC5209-2.5YSTR<\/td>SOT-223<\/td>2.5V output variant<\/td><\/tr>
        Microchip<\/td>MIC5209-5.0YSTR<\/td>SOT-223<\/td>5.0V output variant<\/td><\/tr>
        TI<\/td>TLV1117-33<\/td>SOT-223<\/td>800mA LDO, 3.3V<\/td><\/tr>
        onsemi<\/td>NCP551<\/td>SOT-223<\/td>150mA LDO, ultra-low Iq<\/td><\/tr>
        Microchip<\/td>MIC5219-3.3YM5-TR<\/td>SOT-23-5<\/td>500mA LDO, 3.3V, smaller package<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/10397","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/comments?post=10397"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/10397\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/media?parent=10397"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/categories?post=10397"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/tags?post=10397"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=10397"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}