{"id":10399,"date":"2026-07-19T13:07:53","date_gmt":"2026-07-19T13:07:53","guid":{"rendered":"https:\/\/ic-vendor.com\/mic5209-25ystr\/"},"modified":"2026-07-19T13:07:53","modified_gmt":"2026-07-19T13:07:53","slug":"mic5209-25ystr","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/mic5209-25ystr\/","title":{"rendered":"MIC5209-2,5YSTR"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The MIC5209-2.5YSTR is a 500mA low-noise LDO voltage regulator from Microchip with a fixed 2.5V output. It shares all features of the MIC5209 family including ultra-low dropout, 1% accuracy, reverse battery protection, and enable\/shutdown in a SOT-223-3 package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n
\u8f93\u51fa\u7c7b\u578b<\/td>\nFixed 2.5V<\/td>\n<\/tr>\n
Maximum Output Current<\/td>\n500mA<\/td>\n<\/tr>\n
\u8f93\u5165\u7535\u538b\u8303\u56f4<\/td>\n2.5V to 16V<\/td>\n<\/tr>\n
Dropout Voltage<\/td>\n350mV typical @ 500mA<\/td>\n<\/tr>\n
Output Accuracy<\/td>\n\u00b11%<\/td>\n<\/tr>\n
\u9759\u6001\u7535\u6d41<\/td>\n80\u00b5A typical<\/td>\n<\/tr>\n
Ultra-Low Noise<\/td>\nYes (with bypass capacitor)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOT-223-3<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to +125\u00b0C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 1% output voltage accuracy<\/li>\n
  • Ultra-low noise with external bypass capacitor<\/li>\n
  • 10mV dropout at light loads<\/li>\n
  • Reverse battery protection<\/li>\n
  • Current and thermal limiting<\/li>\n
  • Near-zero shutdown current<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • DLL and DDR termination voltage<\/li>\n
    • FPGA core voltage (2.5V)<\/li>\n
    • Low-noise analog supply<\/li>\n
    • Battery-powered portable devices<\/li>\n
    • ADC\/DAC reference supply<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MIC5209-2.5YSTR is a 500mA low-noise LDO voltage regulator from Microchip with a fixed 2.5V output. It shares all features of the MIC5209 family including ultra-low dropout, 1% accuracy, reverse battery protection, and enable\/shutdown in a SOT-223-3 package. Key Specifications Output Type Fixed 2.5V Maximum Output Current 500mA Input Voltage Range 2.5V to […]<\/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":[32,29],"tags":[469,1698,516],"chip_brand":[134],"class_list":["post-10399","post","type-post","status-publish","format-standard","hentry","category-low-dropout-regulators-ldo","category-power-management-ics-pmic","tag-ldo","tag-mic5209-25ystr","tag-voltage-regulator","chip_brand-microchip"],"acf":{"brief_explanation":"500mA LDO, Vout=2.5V fixed, 2.5-16V in, low-noise, SOT-223-3, -40~125\u00b0C","date_code":"","package_case":"SOT-223-3","in_stock":5100,"datasheet":"https:\/\/www.microchip.com\/en-us\/product\/MIC5209","price":"","product_introduction":"The MIC5209-2.5YSTR is a 500mA low-noise LDO voltage regulator from Microchip with a fixed 2.5V output and 1% accuracy. Designed for noise-sensitive applications such as FPGA core supplies, DDR termination, and precision analog circuits, it features ultra-low dropout voltage and ultra-low output noise with external bypass capacitor. The 2.5V output is commonly used as FPGA core voltage, DLL supply, and ADC\/DAC voltage reference. The SOT-223-3 package provides excellent thermal dissipation.","working_principle":"The MIC5209 uses a P-channel MOSFET pass element with an error amplifier and 1% bandgap reference. The bypass capacitor on the BYP pin filters reference noise for ultra-low output noise. At light loads, the dropout voltage drops to just 10mV, making it ideal for battery-powered applications where input voltage closely approaches the output. Reverse battery protection, current limiting, and thermal shutdown provide comprehensive fault protection without external components.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>IN<\/td>Input Supply (2.5-16V)<\/td><\/tr>
      2<\/td>GND<\/td>Ground (Tab)<\/td><\/tr>
      3<\/td>OUT<\/td>Regulated Output (2.5V)<\/td><\/tr><\/table>","application_scenarios":"
      • FPGA VCCINT core voltage (2.5V)<\/li>\n
      • DDR SDRAM termination voltage<\/li>\n
      • Precision ADC\/DAC 2.5V reference supply<\/li>\n
      • Low-noise analog front-end power<\/li>\n
      • Battery-powered portable device 2.5V rail<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Vout<\/th>Notes<\/th><\/tr>
        Microchip<\/td>MIC5209-3.3YSTR<\/td>3.3V<\/td>Same family, 3.3V output<\/td><\/tr>
        TI<\/td>TLV1117-25<\/td>2.5V<\/td>800mA LDO equivalent<\/td><\/tr>
        Microchip<\/td>MCP1824T-2502E\/OT<\/td>2.5V<\/td>300mA, SOT-23-5<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10399","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/comments?post=10399"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10399\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=10399"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=10399"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=10399"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=10399"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}