{"id":8458,"date":"2026-06-29T02:13:39","date_gmt":"2026-06-29T02:13:39","guid":{"rendered":"https:\/\/materialparts.com\/ams1117\/"},"modified":"2026-06-29T06:27:43","modified_gmt":"2026-06-29T06:27:43","slug":"ams1117","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/ams1117\/","title":{"rendered":"AMS1117"},"content":{"rendered":"

Productos<\/h2>\n

The AMS1117 from Advanced Monolithic Systems is a low-dropout (LDO) linear voltage regulator available in fixed output voltages of 1.2V, 1.5V, 1.8V, 2.5V, 2.85V, 3.3V, and 5.0V, as well as an adjustable version. Housed in SOT-223 and TO-252 packages, it delivers up to 1A output current with a typical dropout voltage of 1.1V at full load, making it one of the most widely used LDO regulators in consumer and embedded electronics.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Corriente de salida<\/td>\n1A (max)<\/td>\n<\/tr>\n
Dropout Voltage<\/td>\n1.1V typ @ 1A<\/td>\n<\/tr>\n
Output Voltages (Fixed)<\/td>\n1.2V, 1.5V, 1.8V, 2.5V, 2.85V, 3.3V, 5.0V<\/td>\n<\/tr>\n
Adjustable Reference<\/td>\n1.25V (1.2V-1.275V)<\/td>\n<\/tr>\n
Line Regulation<\/td>\n0.2% max<\/td>\n<\/tr>\n
Load Regulation<\/td>\n0.7% max<\/td>\n<\/tr>\n
Ripple Rejection<\/td>\n60 dB min @ 120Hz<\/td>\n<\/tr>\n
Current Limit<\/td>\n1.1A to 1.5A<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-20\u00b0C to +125\u00b0C<\/td>\n<\/tr>\n
Paquete<\/td>\nSOT-223, TO-252 (DPAK)<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • Three-terminal adjustable or fixed voltage options<\/li>\n
  • Low quiescent current flows into load for high efficiency<\/li>\n
  • On-chip thermal limiting and current limit protection<\/li>\n
  • Pin-compatible with industry-standard 1117 family<\/li>\n
  • Optimized for low-voltage transient response<\/li>\n
  • Available in SOT-223 and TO-252 power packages<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • 5V to 3.3V linear regulation for MCU\/SoC boards<\/li>\n
    • Battery chargers and portable equipment<\/li>\n
    • Post regulators for switching power supplies<\/li>\n
    • SCSI active terminators<\/li>\n
    • Motherboard clock supply regulation<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The AMS1117 from Advanced Monolithic Systems is a low-dropout (LDO) linear voltage regulator available in fixed output voltages of 1.2V, 1.5V, 1.8V, 2.5V, 2.85V, 3.3V, and 5.0V, as well as an adjustable version. Housed in SOT-223 and TO-252 packages, it delivers up to 1A output current with a typical dropout voltage of 1.1V […]<\/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":[],"chip_brand":[297],"class_list":["post-8458","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo","chip_brand-advanced-monolithic"],"acf":{"brief_explanation":"1A LDO voltage regulator, 1.1V dropout, fixed\/adjustable outputs, SOT-223\/TO-252","date_code":"","package_case":"SOT-223 (6.5 x 3.5 x 1.6 mm), TO-252 (DPAK)","in_stock":12476,"datasheet":"http:\/\/www.advanced-monolithic.com\/pdf\/ds1117.pdf","price":"$0.15 @ 1ku","product_introduction":"The AMS1117 from Advanced Monolithic Systems is a three-terminal low-dropout voltage regulator family providing up to 1A output current. Available in fixed voltages from 1.2V to 5.0V and an adjustable version with a 1.25V reference, the AMS1117 is one of the most ubiquitous LDO regulators in the electronics industry. Its dropout voltage is guaranteed at 1.3V maximum at full load, with typical values around 1.1V. Unlike PNP-type regulators that waste quiescent current, the AMS1117 directs quiescent current into the load, improving overall efficiency. On-chip thermal limiting and current limit protection ensure reliable operation under overload conditions.","working_principle":"The AMS1117 operates as a series-pass linear regulator using a PNP pass transistor to achieve low dropout voltage. The output voltage is maintained by a feedback loop comparing a fraction of the output (via an internal resistor divider for fixed versions or external resistors for the adjustable version) against a 1.25V bandgap reference. The error amplifier drives the pass transistor to regulate the output. The low dropout characteristic comes from the PNP transistor topology, which requires only a small VCE(sat) to maintain regulation. Thermal shutdown activates at approximately 155\u00b0C junction temperature, while foldback current limiting protects against output short circuits.","pin_description":"
      Pin (SOT-223)<\/th>Name<\/th>Description<\/th><\/tr>
      1<\/td>GND\/ADJ<\/td>Ground (fixed) or Adjust (variable)<\/td><\/tr>
      2<\/td>VOUT<\/td>Regulated Output Voltage (tab connected)<\/td><\/tr>
      3<\/td>VIN<\/td>Unregulated Input Voltage<\/td><\/tr>
      Tab<\/td>VOUT<\/td>Heat sink tab, internally connected to Pin 2<\/td><\/tr><\/table>","application_scenarios":"
      • MCU\/SoC Power<\/b>: 5V to 3.3V regulation on Arduino, ESP8266, and ESP32 development boards with minimal external components<\/li>
      • Battery-Powered Devices<\/b>: Efficient regulation in portable instruments where low quiescent current and low dropout extend battery life<\/li>
      • Post-SMPS Regulation<\/b>: Secondary clean-up regulation after switching converters to reduce output ripple and noise<\/li>
      • SCSI Termination<\/b>: The 2.85V version specifically designed for active SCSI bus termination with tight output accuracy<\/li>
      • Embedded Systems<\/b>: General-purpose local regulation eliminating noise from distributed power rails<\/li><\/ul>","alternative_models":"
        Model<\/th>Brand<\/th>Iout (A)<\/th>Vdo (V)<\/th>Package<\/th><\/tr>
        LM1117MPX-3.3<\/td>NXP<\/td>0.8<\/td>1.2<\/td>SOT-223<\/td><\/tr>
        TLV1117LV33DCYR<\/td>TI<\/td>1.0<\/td>1.1<\/td>SOT-223<\/td><\/tr>
        AP2112K-3.3<\/td>Diodes Inc<\/td>0.6<\/td>0.4<\/td>SOT-23-5<\/td><\/tr>
        RT9193-33GB<\/td>Richtek<\/td>0.3<\/td>0.25<\/td>SOT-23-5<\/td><\/tr>
        NCP1117ST33T3G<\/td>onsemi<\/td>1.0<\/td>1.3<\/td>SOT-223<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8458","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=8458"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8458\/revisions"}],"predecessor-version":[{"id":8580,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8458\/revisions\/8580"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=8458"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=8458"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=8458"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=8458"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}