{"id":5162,"date":"2026-06-09T09:04:49","date_gmt":"2026-06-09T09:04:49","guid":{"rendered":"https:\/\/materialparts.com\/emc2305-1-ap-tr\/"},"modified":"2026-06-09T09:04:49","modified_gmt":"2026-06-09T09:04:49","slug":"emc2305-1-ap-tr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/emc2305-1-ap-tr\/","title":{"rendered":"EMC2305-1-AP-TR"},"content":{"rendered":"

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

The EMC2305-1-AP-TR from Microchip is an RPM-based PWM fan speed controller with up to 5 fan channels, tachometer inputs, and I2C interface for server and networking thermal management.<\/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
\u0627\u0644\u0634\u0631\u0643\u0629 \u0627\u0644\u0645\u0635\u0646\u0639\u0629<\/td>\nMicrochip Technology<\/td>\n<\/tr>\n
Fan Channels<\/td>\n5<\/td>\n<\/tr>\n
Control Method<\/td>\nRPM-based PWM<\/td>\n<\/tr>\n
Tachometer Inputs<\/td>\n5<\/td>\n<\/tr>\n
PWM Outputs<\/td>\n5<\/td>\n<\/tr>\n
\u0627\u0644\u0648\u0627\u062c\u0647\u0629<\/td>\nI2C\/SMBus<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n3.3V<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nQFN-24 (4x4mm)<\/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<\/table>\n

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    \n
  • 5 independent fan control channels<\/li>\n
  • RPM-based closed-loop speed control<\/li>\n
  • Programmable PWM frequency<\/li>\n
  • Fan fault detection<\/li>\n
  • Automatic fan speed ramping<\/li>\n
  • I2C\/SMBus interface<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Server thermal management<\/li>\n
    • Networking equipment cooling<\/li>\n
    • Storage system fan control<\/li>\n
    • Telecom rack cooling<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The EMC2305-1-AP-TR from Microchip is an RPM-based PWM fan speed controller with up to 5 fan channels, tachometer inputs, and I2C interface for server and networking thermal management. Key Specifications Manufacturer Microchip Technology Fan Channels 5 Control Method RPM-based PWM Tachometer Inputs 5 PWM Outputs 5 Interface I2C\/SMBus Supply Voltage 3.3V Package QFN-24 […]<\/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":[13,29],"tags":[],"chip_brand":[134],"class_list":["post-5162","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-power-management-ics-pmic","chip_brand-microchip"],"acf":{"brief_explanation":"5-ch RPM-based PWM fan controller, I2C, QFN-24","date_code":"","package_case":"QFN-24 (4.0 x 4.0 x 0.9 mm)","in_stock":11444,"datasheet":"https:\/\/ww1.microchip.com\/downloads\/en\/DeviceDoc\/EMC2305-Data-Sheet-DS20005846A.pdf","price":"$2.50 @ 1ku","product_introduction":"The EMC2305-1-AP-TR from Microchip is a 5-channel RPM-based PWM fan speed controller with I2C\/SMBus interface for server and networking thermal management. Each channel independently controls a 4-wire PWM fan using closed-loop RPM regulation. Tachometer inputs measure actual fan speed, while PWM outputs control duty cycle. The -1-AP-TR suffix specifies the QFN-24 package, tape-and-reel packaging.","working_principle":"Each fan channel reads the tachometer output from a 4-wire fan to measure actual RPM. A PID control loop compares actual RPM to the target set via I2C, adjusting PWM duty cycle to close the speed gap. If a fan fails (tachometer stops), fault detection alerts the host. The I2C interface provides register access for configuration, status, and fan speed programming.","pin_description":"
      Pin Group<\/th>Name<\/th>Function<\/th><\/tr>
      Multiple<\/td>TACH1-5<\/td>Fan tachometer inputs<\/td><\/tr>
      Multiple<\/td>PWM1-5<\/td>PWM drive outputs<\/td><\/tr>
      Multiple<\/td>SDA\/SCL<\/td>I2C interface<\/td><\/tr>
      Power<\/td>VDD\/GND<\/td>3.3V supply<\/td><\/tr><\/table>","application_scenarios":"
      • Server fan speed control and monitoring<\/li>
      • Networking chassis thermal management<\/li>
      • Storage array cooling systems<\/li>
      • Telecom rack fan control<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Notes<\/th><\/tr>
        Microchip<\/td>EMC2303-1-AP-TR<\/td>3-channel version<\/td><\/tr>
        Microchip<\/td>EMC2301-1-AP-TR<\/td>1-channel version<\/td><\/tr>
        TI<\/td>DRV10866<\/td>Single fan driver<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/5162","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=5162"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/5162\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=5162"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=5162"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=5162"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=5162"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}