{"id":7432,"date":"2026-06-24T05:11:08","date_gmt":"2026-06-24T05:11:08","guid":{"rendered":"https:\/\/materialparts.com\/lm431ccm3\/"},"modified":"2026-06-24T05:11:08","modified_gmt":"2026-06-24T05:11:08","slug":"lm431ccm3","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/lm431ccm3\/","title":{"rendered":"LM431CCM3"},"content":{"rendered":"

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

The LM431CCM3 from Texas Instruments is a precision programmable shunt voltage reference with 2.495V internal reference, +\/-0.5% initial accuracy, and 6mV max temperature drift in a SOT-23-3 package. Functionally equivalent to the TL431C grade.<\/p>\n

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Reference Voltage<\/td>\n2.495 V (internal, programmable to 36V)<\/td>\n<\/tr>\n
Initial Accuracy<\/td>\n+\/-0.5% (C grade)<\/td>\n<\/tr>\n
Temperature Drift<\/td>\n6 mV max over 0 to +70\u00b0C<\/td>\n<\/tr>\n
Cathode Current Range<\/td>\n1 mA to 100 mA<\/td>\n<\/tr>\n
Dynamic Impedance<\/td>\n0.2 Ohm typical<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n0\u00b0C to +70\u00b0C<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOT-23-3<\/td>\n<\/tr>\n<\/table>\n

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    \n
  • LM431 C-grade equivalent to TL431C with +\/-0.5% accuracy and 6mV drift<\/li>\n
  • Pin-compatible and functionally identical to TL431 in SOT-23-3<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Precision SMPS feedback and voltage monitoring<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM431CCM3 from Texas Instruments is a precision programmable shunt voltage reference with 2.495V internal reference, +\/-0.5% initial accuracy, and 6mV max temperature drift in a SOT-23-3 package. Functionally equivalent to the TL431C grade. Key Specifications Reference Voltage 2.495 V (internal, programmable to 36V) Initial Accuracy +\/-0.5% (C grade) Temperature Drift 6 mV […]<\/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":[138],"class_list":["post-7432","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo","chip_brand-ti"],"acf":{"brief_explanation":"LM431 C-grade shunt Vref, +\/-0.5%, 6mV drift, SOT-23-3","date_code":"","package_case":"SOT-23-3 (2.90 x 1.30 x 1.00 mm)","in_stock":4800,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lm431.pdf","price":"$0.30 @ 1ku","product_introduction":"The LM431CCM3 from Texas Instruments is the C-grade version of the LM431 precision programmable shunt voltage reference, functionally equivalent to the TL431C. The device provides +\/-0.5% initial accuracy with 6mV maximum temperature drift over the commercial temperature range (0\u00b0C to +70\u00b0C). The LM431 and TL431 are functionally identical and pin-compatible, with the LM431 designation being an alternative part number. The device features the same 2.495V internal bandgap reference programmable to 36V with two external resistors, 0.2 Ohm dynamic impedance, and 1-100mA cathode current range. The CM3 suffix denotes the SOT-23-3 surface-mount package.","working_principle":"Identical to the TL431. The LM431 is a direct functional equivalent with the same internal architecture: bandgap reference, error amplifier, and open-collector NPN shunt transistor. See TL431ACDBZR entry for complete working principle.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>REF<\/td>Reference input (2.495V threshold)<\/td><\/tr>
      2<\/td>Anode<\/td>Ground<\/td><\/tr>
      3<\/td>Cathode<\/td>Output\/shunt (1-100mA)<\/td><\/tr><\/table>","application_scenarios":"
      • Precision SMPS feedback and voltage monitoring with 0.5% accuracy<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>TL431CCDBZR<\/td>SOT-23-3<\/td>Same function, TL431 brand<\/td><\/tr>
        onsemi<\/td>LM431CCM3X<\/td>SOT-23-3<\/td>Pin-compatible<\/td><\/tr>
        TI<\/td>TL431BCDBZR<\/td>SOT-23-3<\/td>B-grade, wider temp range<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7432","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=7432"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7432\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=7432"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=7432"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=7432"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=7432"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}