{"id":6410,"date":"2026-06-16T03:05:23","date_gmt":"2026-06-16T03:05:23","guid":{"rendered":"https:\/\/materialparts.com\/ams1117-1-8\/"},"modified":"2026-06-16T03:05:23","modified_gmt":"2026-06-16T03:05:23","slug":"ams1117-1-8","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/ams1117-1-8\/","title":{"rendered":"AMS1117-1.8"},"content":{"rendered":"

Productos<\/h2>\n

The AMS1117-1.8 from Advanced Monolithic Systems is a 1A low-dropout (LDO) linear voltage regulator with a fixed 1.8V output. With 1.1V max dropout at 1A, it provides a stable 1.8V rail for FPGA core, DDR memory, and MCU core supplies from a 3V to 15V input.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Output Voltage<\/td>\n1.8V (fixed)<\/td>\n<\/tr>\n
Corriente de salida<\/td>\n1A (max)<\/td>\n<\/tr>\n
Dropout Voltage<\/td>\n1.1V (max at 1A)<\/td>\n<\/tr>\n
Input Voltage<\/td>\n2.9V to 15V<\/td>\n<\/tr>\n
Line Regulation<\/td>\n0.2% (max)<\/td>\n<\/tr>\n
Load Regulation<\/td>\n0.4% (max)<\/td>\n<\/tr>\n
Corriente de reposo<\/td>\n5mA (typical)<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40C to +125C<\/td>\n<\/tr>\n
Paquete<\/td>\nSOT-223<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • 1A output current<\/li>\n
  • Low dropout: 1.1V max at 1A<\/li>\n
  • Fixed 1.8V output<\/li>\n
  • Internal thermal shutdown and current limiting<\/li>\n
  • 10uF output capacitor required<\/li>\n
  • SOT-223 surface-mount<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • FPGA core voltage<\/li>\n
    • DDR memory VDDQ<\/li>\n
    • 1.8V MCU core power<\/li>\n
    • Low-voltage digital logic supply<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The AMS1117-1.8 from Advanced Monolithic Systems is a 1A low-dropout (LDO) linear voltage regulator with a fixed 1.8V output. With 1.1V max dropout at 1A, it provides a stable 1.8V rail for FPGA core, DDR memory, and MCU core supplies from a 3V to 15V input. Key Specifications Output Voltage 1.8V (fixed) Output […]<\/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":[13,29],"tags":[],"chip_brand":[208],"class_list":["post-6410","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-power-management-ics-pmic","chip_brand-ams"],"acf":{"brief_explanation":"1A LDO, fixed 1.8V, 1.1V dropout, SOT-223","date_code":"","package_case":"SOT-223 (6.50 x 3.50 x 1.80 mm)","in_stock":65000,"datasheet":"https:\/\/www.advanced-monolithic.com\/pdf\/ds1117.pdf","price":"$0.15 @ 1ku","product_introduction":"The AMS1117-1.8 is a 1A low-dropout linear voltage regulator from Advanced Monolithic Systems providing fixed 1.8V output in SOT-223 package. With 1.1V max dropout at full 1A load, it operates from inputs as low as 2.9V. The 1.8V output serves FPGA core voltages, DDR memory VDDQ, and low-voltage MCU cores. Internal thermal shutdown and current limiting protect against faults. A minimum 10uF output capacitor ensures stability. Pin-compatible with other 1117-series devices.","working_principle":"The AMS1117-1.8 uses a PNP pass transistor in a low-dropout configuration. The error amplifier compares a scaled output voltage with an internal 1.25V bandgap reference. An internal resistor divider sets the 1.8V output: VOUT = VREF x (1 + R1\/R2) = 1.8V. Thermal shutdown activates at approximately 150C junction temperature, and current limiting protects against overload. The output capacitor provides loop compensation.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>
      1<\/td>GND\/ADJ<\/td>Ground<\/td>Ground (fixed output version)<\/td><\/tr>
      2<\/td>VOUT<\/td>Output<\/td>1.8V regulated output; tab also VOUT<\/td><\/tr>
      3<\/td>VIN<\/td>Input<\/td>Unregulated input (2.9V to 15V)<\/td><\/tr><\/table>","application_scenarios":"
      • FPGA Core Supply:<\/b> Generates 1.8V VCCINT from 3.3V board supply for Xilinx Spartan and Altera Cyclone FPGAs<\/li>
      • DDR Memory VDDQ:<\/b> Provides 1.8V for DDR2 memory interfaces with 0.2% line regulation<\/li>
      • Low-Voltage MCU Core:<\/b> Powers 1.8V MCU core from 3.3V I\/O supply with minimal dropout<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Vout<\/th>Iout<\/th>Key Difference<\/th><\/tr>
        AMS1117-3.3<\/td>AMS<\/td>3.3V<\/td>1A<\/td>3.3V version<\/td><\/tr>
        AMS1117-5.0<\/td>AMS<\/td>5.0V<\/td>1A<\/td>5.0V version<\/td><\/tr>
        TLV1117LV18DCYR<\/td>TI<\/td>1.8V<\/td>1A<\/td>Lower IQ (500uA)<\/td><\/tr>
        NCP1117ST1.8T3G<\/td>ONsemi<\/td>1.8V<\/td>1A<\/td>Automotive option<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/6410","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=6410"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/6410\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=6410"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=6410"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=6410"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=6410"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}