{"id":11324,"date":"2026-07-26T04:33:27","date_gmt":"2026-07-26T04:33:27","guid":{"rendered":"https:\/\/ic-vendor.com\/tps79933ddcr\/"},"modified":"2026-07-26T04:33:27","modified_gmt":"2026-07-26T04:33:27","slug":"tps79933ddcr","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/tps79933ddcr\/","title":{"rendered":"TPS79933DDCR"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The Texas Instruments TPS79933DDCR is a low-noise, high-PSRR LDO regulator. 3.3V fixed output, 200mA, 70dB PSRR at 1kHz, ultra-low noise in SOT-23-5 package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Output Voltage<\/td>\n3.3V (fixed)<\/td>\n<\/tr>\n
Max Output Current<\/td>\n200mA<\/td>\n<\/tr>\n
\u8f93\u5165\u7535\u538b<\/td>\n2.7V to 5.5V<\/td>\n<\/tr>\n
Dropout Voltage<\/td>\n75 mV typ @ 200mA<\/td>\n<\/tr>\n
PSRR<\/td>\n70 dB @ 1kHz<\/td>\n<\/tr>\n
Noise<\/td>\n28 uVrms (10Hz-100kHz)<\/td>\n<\/tr>\n
\u9759\u6001\u7535\u6d41<\/td>\n50 uA typ<\/td>\n<\/tr>\n
Operating Temp<\/td>\n-40 to +125C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOT-23-5 (2.9×1.6mm)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 70 dB high PSRR at 1kHz<\/li>\n
  • 28 uVrms ultra-low output noise<\/li>\n
  • 75 mV low dropout at 200mA<\/li>\n
  • 50uA low quiescent current<\/li>\n
  • 3.3V fixed output<\/li>\n
  • EN pin with auto-discharge<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • RF transceiver clean power<\/li>\n
    • ADC\/DAC reference supply<\/li>\n
    • Audio codec low-noise rail<\/li>\n
    • Sensor precision supply<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The Texas Instruments TPS79933DDCR is a low-noise, high-PSRR LDO regulator. 3.3V fixed output, 200mA, 70dB PSRR at 1kHz, ultra-low noise in SOT-23-5 package. Key Specifications Output Voltage 3.3V (fixed) Max Output Current 200mA Input Voltage 2.7V to 5.5V Dropout Voltage 75 mV typ @ 200mA PSRR 70 dB @ 1kHz Noise 28 uVrms […]<\/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":[19,13],"tags":[2599],"chip_brand":[138],"class_list":["post-11324","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","tag-tps79933ddcr","chip_brand-ti"],"acf":{"brief_explanation":"3.3V 200mA LDO, 70dB PSRR, 28uV noise, SOT-23-5, -40 to 125C","date_code":"","package_case":"SOT-23-5 (2.9x1.6x1.0mm)","in_stock":3704,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/tps799.pdf","price":"$0.50 @ 1ku","product_introduction":"The TPS79933DDCR from TI is a low-noise, high-PSRR LDO with 3.3V fixed output in SOT-23-5. 70 dB PSRR at 1kHz and 28 uVrms output noise (10Hz-100kHz) make it ideal for noise-sensitive RF, analog, and audio applications. 75 mV dropout at 200mA and 50uA quiescent current provide efficient operation from 2.7-5.5V input. Enable pin with auto-discharge ensures rapid power-down.","working_principle":"The TPS799 uses a PMOS pass transistor with a low-noise error amplifier and optimized reference circuit. The clean bandgap reference feeds an RC-filtered node that reduces reference noise before the error amplifier. The fast error amplifier loop achieves 70 dB PSRR by actively rejecting input supply ripple. The 75 mV dropout results from the low RDS(on) of the PMOS pass element at 200mA load.","pin_description":"
      Pin<\/th>Name<\/th>Description<\/th><\/tr>
      1<\/td>EN<\/td>Enable (active high)<\/td><\/tr>
      2<\/td>GND<\/td>Ground<\/td><\/tr>
      3<\/td>IN<\/td>Input (2.7-5.5V)<\/td><\/tr>
      4<\/td>NC<\/td>No connect<\/td><\/tr>
      5<\/td>OUT<\/td>3.3V output<\/td><\/tr><\/table>","application_scenarios":"
      • RF transceiver supply<\/li>
      • ADC\/DAC reference<\/li>
      • Audio codec power<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        TPS79928DDCR<\/td>TI<\/td>2.8V output variant<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/11324","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/comments?post=11324"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/11324\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=11324"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=11324"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=11324"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=11324"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}