{"id":2637,"date":"2026-05-24T01:31:33","date_gmt":"2026-05-24T01:31:33","guid":{"rendered":"https:\/\/materialparts.com\/ez1084cm-3-3\/"},"modified":"2026-05-24T01:32:20","modified_gmt":"2026-05-24T01:32:20","slug":"ez1084cm-3-3","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/ez1084cm-3-3\/","title":{"rendered":"EZ1084CM-3.3"},"content":{"rendered":"

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

The EZ1084CM-3.3 from Semtech is a 5A low-dropout voltage regulator providing fixed 3.3V output in a SOT-223 package. With 1.3V maximum dropout at 5A load, it is a high-current LDO suitable for 5V to 3.3V conversion in digital systems.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n
Output Voltage<\/td>\n3.3V fixed (+\/-1%)<\/td>\n<\/tr>\n
\u8f93\u51fa\u7535\u6d41<\/td>\n5A<\/td>\n<\/tr>\n
Dropout Voltage<\/td>\n1.3V max @ 5A<\/td>\n<\/tr>\n
Input Voltage Max<\/td>\n15V<\/td>\n<\/tr>\n
Line Regulation<\/td>\n0.2% max<\/td>\n<\/tr>\n
Load Regulation<\/td>\n0.4% max<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOT-223-3<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n0\u00b0C to +125\u00b0C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 5A output current capability<\/li>\n
  • Fixed 3.3V with +\/-1% accuracy<\/li>\n
  • 1.3V dropout at full 5A load<\/li>\n
  • On-chip thermal limiting and current limiting<\/li>\n
  • SOT-223 surface-mount package<\/li>\n
  • Pin-compatible with 1084-series LDOs<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • 5V to 3.3V high-current conversion<\/li>\n
    • Post-regulation after switching converters<\/li>\n
    • Server and networking board power<\/li>\n
    • FPGA and CPU I\/O voltage regulation<\/li>\n
    • Battery charger output regulation<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The EZ1084CM-3.3 from Semtech is a 5A low-dropout voltage regulator providing fixed 3.3V output in a SOT-223 package. With 1.3V maximum dropout at 5A load, it is a high-current LDO suitable for 5V to 3.3V conversion in digital systems. Key Specifications Output Voltage 3.3V fixed (+\/-1%) Output Current 5A Dropout Voltage 1.3V max […]<\/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":[13,32],"tags":[],"chip_brand":[189],"class_list":["post-2637","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo","chip_brand-semtech"],"acf":{"brief_explanation":"5A LDO, 3.3V fixed, 1.3V dropout, SOT-223, +\/-1% accuracy","date_code":"","package_case":"SOT-223-4 (6.7 x 3.7 x 1.7 mm)","in_stock":6070,"datasheet":"https:\/\/www.semtech.com\/products\/power-management\/ldo-regulators\/ez1084cm-3.3","price":"$0.45 @ 1ku","product_introduction":"The EZ1084CM-3.3 from Semtech is a 5A low-dropout voltage regulator providing a fixed 3.3V output with +\/-1% accuracy. With a maximum dropout of 1.3V at full 5A load, it can regulate 3.3V from a 5V supply while delivering high output current. The on-chip thermal shutdown and current limiting protect the device under overload conditions. Pin-compatible with the industry-standard 1084 LDO family, it can replace LM1084-3.3 and LT1084-3.3 in most applications.","working_principle":"The EZ1084CM-3.3 uses an NPN pass transistor in an emitter-follower configuration with a PNP driver stage to achieve low dropout. An error amplifier compares a divided-down output voltage with an internal bandgap reference trimmed to +\/-0.5% accuracy. When the input-output differential falls below dropout, the pass transistor saturates and the output tracks the input minus the dropout. Thermal shutdown disables the output when junction temperature exceeds approximately 150\u00b0C.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>GND\/ADJ<\/td>Ground<\/td>Ground (fixed version)<\/td><\/tr>
      2<\/td>VOUT<\/td>Output<\/td>Regulated 3.3V output<\/td><\/tr>
      3<\/td>VIN<\/td>Input<\/td>Input voltage (up to 15V)<\/td><\/tr>
      4<\/td>VOUT (Tab)<\/td>Output<\/td>Output \/ Heatsink tab<\/td><\/tr><\/table>","application_scenarios":"
      • 5V to 3.3V high-current regulation in servers<\/li>
      • Post-regulation after 5V switching converters<\/li>
      • FPGA and CPU I\/O voltage supply rail<\/li>
      • Networking board 3.3V power distribution<\/li>
      • Battery charger output voltage regulation<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>LM1084ISX-3.3\/NOPB<\/td>TO-263<\/td>5A, 3.3V, through-hole<\/td><\/tr>
        onsemi<\/td>NCP1084ST33T3G<\/td>SOT-223<\/td>5A, 3.3V, pin-compatible<\/td><\/tr>
        AMS<\/td>AMS1084CM-3.3<\/td>SOT-223<\/td>5A, 3.3V, equivalent<\/td><\/tr>
        TI<\/td>LM1117MPX-3.3\/NOPB<\/td>SOT-223<\/td>800mA, lower current alternative<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/2637","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=2637"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/2637\/revisions"}],"predecessor-version":[{"id":2647,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/2637\/revisions\/2647"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=2637"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=2637"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=2637"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=2637"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}