{"id":2553,"date":"2026-05-23T06:11:04","date_gmt":"2026-05-23T06:11:04","guid":{"rendered":"https:\/\/materialparts.com\/ams1117-3-3\/"},"modified":"2026-05-23T06:11:04","modified_gmt":"2026-05-23T06:11:04","slug":"ams1117-3-3","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/ams1117-3-3\/","title":{"rendered":"AMS1117-3.3"},"content":{"rendered":"

Productos<\/h2>\n

The AMS1117-3.3 is a 1A low-dropout voltage regulator providing a fixed 3.3V output with 1.3V maximum dropout at full load. Available in SOT-223, TO-252, and SOT-89 packages, it is a widely used industry-standard LDO for post-regulation and battery-powered applications.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n
Output Voltage<\/td>\n3.3V (fixed, +\/-2%)<\/td>\n<\/tr>\n
Corriente de salida<\/td>\n1A<\/td>\n<\/tr>\n
Dropout Voltage<\/td>\n1.1V typ \/ 1.3V max @ 1A<\/td>\n<\/tr>\n
Input Voltage Max<\/td>\n15V<\/td>\n<\/tr>\n
Line Regulation<\/td>\n0.3% max<\/td>\n<\/tr>\n
Load Regulation<\/td>\n0.5% max<\/td>\n<\/tr>\n
Corriente de reposo<\/td>\n10mA max<\/td>\n<\/tr>\n
Paquete<\/td>\nSOT-223 \/ TO-252 \/ SOT-89<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • 1A output current with 1.3V dropout max<\/li>\n
  • Fixed 3.3V output with +\/-2% accuracy<\/li>\n
  • On-chip thermal limiting and current limiting<\/li>\n
  • Available in multiple surface-mount packages<\/li>\n
  • Pin-compatible with LM1117 and other 1117-series LDOs<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Post-regulation after switching converters<\/li>\n
    • 5V to 3.3V conversion in digital systems<\/li>\n
    • Battery charger regulation<\/li>\n
    • LCD monitor power supplies<\/li>\n
    • Set-top box and PC add-on card power<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The AMS1117-3.3 is a 1A low-dropout voltage regulator providing a fixed 3.3V output with 1.3V maximum dropout at full load. Available in SOT-223, TO-252, and SOT-89 packages, it is a widely used industry-standard LDO for post-regulation and battery-powered applications. Key Specifications Output Voltage 3.3V (fixed, +\/-2%) Output Current 1A Dropout Voltage 1.1V typ […]<\/p>\n","protected":false},"author":2,"featured_media":2563,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,32],"tags":[],"chip_brand":[165],"class_list":["post-2553","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo","chip_brand-adi"],"acf":{"brief_explanation":"1A LDO, 3.3V fixed, 1.3V dropout, SOT-223, +\/-2% accuracy","date_code":"","package_case":"SOT-223-4 (6.7 x 3.7 x 1.7 mm)","in_stock":11890,"datasheet":"https:\/\/www.advanced-monolithic.com\/pdf\/ds1117.pdf","price":"$0.15 @ 1ku","product_introduction":"The AMS1117-3.3 is a 1A low-dropout voltage regulator from Advanced Monolithic Systems (AMS), providing a fixed 3.3V output with guaranteed maximum dropout voltage of 1.3V at full 1A load. The output voltage is trimmed to +\/-2% accuracy using on-chip precision trimming. Built-in thermal shutdown and current limiting protect the device under overload conditions. The AMS1117-3.3 is pin-compatible with the industry-standard 1117 family, making it a drop-in replacement for LM1117-3.3, LD1117-3.3, and other 1117-series devices in SOT-223, TO-252, and SOT-89 packages.","working_principle":"The AMS1117-3.3 uses a PNP pass transistor to achieve low dropout voltage. An error amplifier compares a divided-down version of the output voltage with an internal bandgap reference trimmed to +\/-1% accuracy. The amplifier drives the PNP pass element to maintain 3.3V at the output. When the input-output differential falls below the dropout voltage, the PNP saturates and the output tracks the input minus the dropout. The on-chip thermal shutdown circuit disables the output when junction temperature exceeds approximately 150C, while current limiting restricts output current to approximately 1.1A under overload conditions.","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 regulation in digital and MCU systems<\/li>
      • Post-regulation after DC-DC switching converters<\/li>
      • Battery-powered instrumentation and meters<\/li>
      • PC add-on card and motherboard clock supply<\/li>
      • LCD monitor and set-top box power rails<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>LM1117MPX-3.3\/NOPB<\/td>SOT-223<\/td>800mA, +\/-1% accuracy<\/td><\/tr>
        onsemi<\/td>NCP1117ST33T3G<\/td>SOT-223<\/td>1A, 3.3V, pin-compatible<\/td><\/tr>
        ST<\/td>LD1117S33TR<\/td>SOT-223<\/td>800mA, 3.3V LDO<\/td><\/tr>
        Diodes Inc<\/td>AZ1117CH-3.3TRG1<\/td>SOT-223<\/td>1A, 3.3V, low cost<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/2553","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=2553"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/2553\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media\/2563"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=2553"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=2553"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=2553"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=2553"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}