{"id":7283,"date":"2026-06-24T03:23:51","date_gmt":"2026-06-24T03:23:51","guid":{"rendered":"https:\/\/materialparts.com\/spx1117m3-l-3-3-tr\/"},"modified":"2026-06-24T03:23:51","modified_gmt":"2026-06-24T03:23:51","slug":"spx1117m3-l-3-3-tr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/spx1117m3-l-3-3-tr\/","title":{"rendered":"SPX1117M3-L-3-3\/TR"},"content":{"rendered":"

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

The SPX1117M3-L-3-3\/TR from MaxLinear (formerly Sipex\/Exar) is an 800mA low-dropout (LDO) voltage regulator with 3.3V fixed output in a SOT-223 package. Featuring 1.1V dropout at full load and 1% output accuracy, it is ideal for battery-powered and portable applications.<\/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\n\n\n
\u062c\u0647\u062f \u0627\u0644\u062e\u0631\u062c<\/td>\n3.3 V (fixed, \u00b11%)<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n800 mA (guaranteed)<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u062a\u0633\u0631\u0628<\/td>\n1.1 V typical @ 800mA<\/td>\n<\/tr>\n
\u0646\u0637\u0627\u0642 \u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n2.6 V to 15 V<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0647\u062f\u0626\u0629<\/td>\n5 mA typical<\/td>\n<\/tr>\n
Line Regulation<\/td>\n0.1%<\/td>\n<\/tr>\n
Load Regulation<\/td>\n0.2%<\/td>\n<\/tr>\n
PSRRR<\/td>\n75 dB @ 120Hz<\/td>\n<\/tr>\n
Protection<\/td>\nOvercurrent, thermal shutdown<\/td>\n<\/tr>\n
Stability<\/td>\n2.2\u00b5F ceramic output capacitor<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOT-223-3<\/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

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 800mA guaranteed output current with 1A peak current capability<\/li>\n
  • 1.1V low dropout voltage at 800mA for efficient regulation<\/li>\n
  • 3.3V fixed output with tight \u00b11% accuracy<\/li>\n
  • Stable with only 2.2\u00b5F ceramic output capacitor<\/li>\n
  • Overcurrent and thermal shutdown protection<\/li>\n
  • SOT-223 surface-mount package for compact designs<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • 3.3V regulation from 5V supply in battery-powered devices<\/li>\n
    • Portable computer and handheld device power management<\/li>\n
    • SMPS post-regulation and SCSI active termination<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The SPX1117M3-L-3-3\/TR from MaxLinear (formerly Sipex\/Exar) is an 800mA low-dropout (LDO) voltage regulator with 3.3V fixed output in a SOT-223 package. Featuring 1.1V dropout at full load and 1% output accuracy, it is ideal for battery-powered and portable applications. Key Specifications Output Voltage 3.3 V (fixed, \u00b11%) Output Current 800 mA (guaranteed) Dropout […]<\/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":[32],"tags":[],"chip_brand":[171],"class_list":["post-7283","post","type-post","status-publish","format-standard","hentry","category-low-dropout-regulators-ldo","chip_brand-maxlinear"],"acf":{"brief_explanation":"3.3V 800mA LDO, 1.1V dropout, SOT-223, 1% accuracy, 2.2uF stable, OCP\/thermal","date_code":"","package_case":"SOT-223-3 (6.50 x 3.50 x 1.60 mm)","in_stock":7815,"datasheet":"https:\/\/www.maxlinear.com\/product\/power-management\/power-conversion\/ldos-and-regulators\/linear-regulators-ldos\/spx1117","price":"$0.25 @ 1ku","product_introduction":"The SPX1117M3-L-3-3\/TR from MaxLinear (formerly Sipex\/Exar) is a low-power positive-voltage regulator designed to satisfy moderate power requirements with a cost-effective, small-footprint solution. The device provides a fixed 3.3V output at up to 800mA guaranteed current (1A peak) with a low dropout voltage of only 1.1V at full load. The +\/-1% output voltage accuracy over line, load, and temperature ensures stable supply rails for sensitive digital and analog circuits. The quiescent current flows into the load as output current decreases, naturally improving efficiency at light loads. The SPX1117 is stable with a small 2.2uF ceramic output capacitor. Internal overcurrent and thermal shutdown protections safeguard the device during fault conditions.","working_principle":"The SPX1117M3-L-3-3\/TR uses a PNP pass transistor in a low-dropout regulator topology. Unlike standard NPN-pass regulators that require VOUT + VBE + VCE(sat) headroom, the PNP pass transistor requires only VCE(sat) headroom, allowing dropout voltages as low as 1.1V at 800mA. The internal error amplifier compares a fraction of the output voltage with an internal 1.262V bandgap reference, driving the PNP pass transistor base to maintain regulation. Current limiting protects against output short circuits, and thermal shutdown disables the pass transistor when junction temperature exceeds approximately 160C.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>GND\/ADJ<\/td>Ground (fixed version)<\/td><\/tr>
      2<\/td>VOUT<\/td>3.3V regulated output<\/td><\/tr>
      3<\/td>VIN<\/td>Input supply (2.6V to 15V)<\/td><\/tr>
      Tab<\/td>VOUT<\/td>Output (connected to pin 2)<\/td><\/tr><\/table>","application_scenarios":"
      • 3.3V regulation from 5V or battery supply at up to 800mA in SOT-223<\/li>
      • Portable and battery-powered device power management with low Iq<\/li>
      • Post-regulation for switch-mode supplies requiring clean 3.3V output<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        onsemi<\/td>NCP1117ST33T3G<\/td>SOT-223<\/td>1A, pin-compatible<\/td><\/tr>
        TI<\/td>TLV1117-33IDCYR<\/td>SOT-223<\/td>800mA, TI brand<\/td><\/tr>
        Diodes Inc<\/td>AP2112K-3.3<\/td>SOT-23-5<\/td>600mA, smaller package<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7283","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=7283"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7283\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=7283"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=7283"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=7283"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=7283"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}