{"id":7624,"date":"2026-06-26T07:00:17","date_gmt":"2026-06-26T07:00:17","guid":{"rendered":"https:\/\/materialparts.com\/mc33275dt-3-3rkg\/"},"modified":"2026-06-26T14:12:19","modified_gmt":"2026-06-26T14:12:19","slug":"mc33275dt-3-3rkg","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/mc33275dt-3-3rkg\/","title":{"rendered":"MC33275DT-3.3RKG"},"content":{"rendered":"

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

The MC33275DT-3.3RKG from onsemi is a 300mA micropower LDO regulator with 260mV dropout, 3.3V fixed output in DPAK package.<\/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
\u062c\u0647\u062f \u0627\u0644\u062e\u0631\u062c<\/td>\n3.3V fixed<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n300 mA<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u062a\u0633\u0631\u0628<\/td>\n260 mV max @ 300mA<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\nUp to 13V<\/td>\n<\/tr>\n
Accuracy<\/td>\n+\/-2%<\/td>\n<\/tr>\n
PSRRR<\/td>\n75 dB<\/td>\n<\/tr>\n
Output Cap<\/td>\n0.33uF min for stability<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nDPAK (TO-252-3)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40 to +125 C<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Ultra-low 260mV dropout at 300mA<\/li>\n
  • Only 0.33uF output capacitor needed<\/li>\n
  • 75dB PSRR<\/li>\n
  • Internal current and thermal limiting<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Battery-powered consumer products<\/li>\n
    • Handheld instruments<\/li>\n
    • Camcorder power<\/li>\n
    • Post-regulation after switching supply<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MC33275DT-3.3RKG from onsemi is a 300mA micropower LDO regulator with 260mV dropout, 3.3V fixed output in DPAK package. Key Specifications Output Voltage 3.3V fixed Output Current 300 mA Dropout Voltage 260 mV max @ 300mA Input Voltage Up to 13V Accuracy +\/-2% PSRR 75 dB Output Cap 0.33uF min for stability Package […]<\/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":[144],"class_list":["post-7624","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo","chip_brand-on"],"acf":{"brief_explanation":"300mA LDO, 3.3V, 260mV dropout, DPAK","date_code":"","package_case":"DPAK TO-252-3 (6.5 x 6.1 mm)","in_stock":3776,"datasheet":"https:\/\/www.onsemi.com\/pdf\/datasheet\/mc33275-d.pdf","price":"$0.58 @ 100+","product_introduction":"The MC33275DT-3.3RKG from onsemi is a 300mA micropower low-dropout voltage regulator with 3.3V fixed output in DPAK package. The 260mV maximum dropout voltage at full load enables efficient regulation from a 3.6V Li-ion battery. The device requires only 0.33uF output capacitance for stability, reducing BOM cost and board space. The 75dB PSRR makes it suitable for post-regulation after switching converters. Internal current limiting and thermal shutdown protect against fault conditions.","working_principle":"The MC33275DT-3.3RKG operates as a series-pass LDO regulator. (1) A PNP pass transistor provides the low dropout characteristic - the collector is connected to the output and the emitter to the input, allowing the output to approach the input voltage within a saturation voltage of 260mV at 300mA. (2) The error amplifier compares a divided version of the output voltage with an internal bandgap reference (1.235V). The feedback loop adjusts the base drive to the PNP pass transistor to maintain regulation. The tight +\/-2% output accuracy comes from laser-trimmed resistors. (3) The internal current limit circuit senses the pass transistor current and limits it to approximately 600mA during overload. Thermal shutdown activates at approximately 165C junction temperature, cycling on and off until the fault is removed.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>GND<\/td>Ground<\/td><\/tr>
      2<\/td>VOUT<\/td>3.3V regulated output<\/td><\/tr>
      3<\/td>VIN<\/td>Input supply (up to 13V)<\/td><\/tr>
      Tab<\/td>VOUT<\/td>Output (thermal pad)<\/td><\/tr><\/table>","application_scenarios":"
      • Battery-powered 3.3V systems with Li-ion input<\/li>
      • Handheld instruments with 0.33uF minimal capacitance<\/li>
      • Post-regulation after switching supply with 75dB PSRR<\/li>
      • Consumer products with internal fault protection<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        MC33275DT-5.0RKG<\/td>onsemi<\/td>5.0V output version<\/td><\/tr>
        NCV33275DT33RKG<\/td>onsemi<\/td>AEC-Q100 automotive version<\/td><\/tr>
        TLV1117LV33DCYR<\/td>TI<\/td>1A LDO, 3.3V, SOT-223<\/td><\/tr>
        AP2112K-3.3<\/td>Diodes<\/td>600mA, SOT-23-5<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7624","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=7624"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7624\/revisions"}],"predecessor-version":[{"id":7694,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7624\/revisions\/7694"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=7624"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=7624"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=7624"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=7624"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}