{"id":11749,"date":"2026-07-27T02:25:49","date_gmt":"2026-07-27T02:25:49","guid":{"rendered":"https:\/\/ic-vendor.com\/lp2951-33dr\/"},"modified":"2026-07-27T10:15:10","modified_gmt":"2026-07-27T10:15:10","slug":"lp2951-33dr","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/lp2951-33dr\/","title":{"rendered":"LP2951-33DR"},"content":{"rendered":"

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

LP2951-33DR is a 100mA micropower LDO regulator with 3.3V fixed output, error flag output, SOIC-8 package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n
\u8f93\u51fa\u7535\u6d41<\/td>\n100 mA<\/td>\n<\/tr>\n
Output Voltage<\/td>\n3.3V fixed<\/td>\n<\/tr>\n
Dropout Voltage<\/td>\n600 mV at 100mA<\/td>\n<\/tr>\n
\u9759\u6001\u7535\u6d41<\/td>\n75 \u00b5A<\/td>\n<\/tr>\n
PSRR<\/td>\n60 dB at 1kHz<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOIC-8<\/td>\n<\/tr>\n
\u7279\u70b9<\/td>\nError flag, shutdown<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 3.3V fixed output with error flag<\/li>\n
  • Micropower 75\u00b5A quiescent current<\/li>\n
  • Shutdown mode for power savings<\/li>\n
  • Error flag indicates output regulation<\/li>\n
  • SOIC-8 package with additional features<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n

    Refer to manufacturer datasheet for detailed application information and design guidelines.<\/p>","protected":false},"excerpt":{"rendered":"

    Product Overview LP2951-33DR is a 100mA micropower LDO regulator with 3.3V fixed output, error flag output, SOIC-8 package. Key Specifications Output Current 100 mA Output Voltage 3.3V fixed Dropout Voltage 600 mV at 100mA Quiescent Current 75 \u00b5A PSRR 60 dB at 1kHz Package SOIC-8 Features Error flag, shutdown Features 3.3V fixed output with error […]<\/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":[3034],"chip_brand":[1893],"class_list":["post-11749","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","tag-lp2951-33dr","chip_brand-texas-instruments"],"acf":{"brief_explanation":"LDO regulator, 100mA, micropower, 0.5% reference, adjustable\/fixed output","date_code":"","package_case":"See datasheet","in_stock":12720,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lp2951.pdf","price":"$0.35 - $2.50","product_introduction":"LP2951-33DR is a 100mA micropower LDO regulator with 3.3V fixed output, error flag output, SOIC-8 package.","working_principle":"The LP2951-33DR is a Texas Instruments low-dropout linear regulator or power management IC. A precision bandgap reference sets the output voltage. An error amplifier compares a divided-down version of the output with the reference and drives a pass transistor to regulate output. Current limiting and thermal shutdown provide fault protection. Low quiescent current and high PSRR make it suitable for noise-sensitive RF and analog supply rails. Enable and power-good features support power sequencing in multi-rail systems.","pin_description":"
    Pin Group<\/th>Name<\/th>Description<\/th><\/tr>
    I\/O<\/td>Signal pins<\/td>Primary signal interface pins<\/td><\/tr>
    Power<\/td>VCC\/VDD<\/td>Supply voltage pins<\/td><\/tr>
    Ground<\/td>GND\/VSS<\/td>Ground reference pins<\/td><\/tr>
    Control<\/td>EN, RST, CS<\/td>Enable, reset, and chip select controls<\/td><\/tr><\/table>","application_scenarios":"
    • MCU\/FPGA core voltage regulation<\/li>
    • RF transceiver clean supply<\/li>
    • Battery-powered portable devices<\/li>
    • Post-regulation after switching converter<\/li><\/ul>","alternative_models":"
      Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
      NCV4275<\/td>ON Semi<\/td>Equivalent LDO function<\/td><\/tr>
      AP2112<\/td>Diodes Inc<\/td>Low-cost LDO alternative<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/11749","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=11749"}],"version-history":[{"count":1,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/11749\/revisions"}],"predecessor-version":[{"id":12257,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/11749\/revisions\/12257"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=11749"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=11749"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=11749"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=11749"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}