{"id":10485,"date":"2026-07-20T04:20:13","date_gmt":"2026-07-20T04:20:13","guid":{"rendered":"https:\/\/ic-vendor.com\/lp2951acd-3-0r2g\/"},"modified":"2026-07-20T04:20:13","modified_gmt":"2026-07-20T04:20:13","slug":"lp2951acd-3-0r2g","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/es\/lp2951acd-3-0r2g\/","title":{"rendered":"LP2951ACD-3.0R2G"},"content":{"rendered":"

Productos<\/h2>\n

The onsemi LP2951ACD-3.0R2G is a micropower low-dropout (LDO) linear voltage regulator providing a fixed 3.0 V output at up to 100 mA. Housed in an SOIC-8 package, it features an extremely low quiescent current of 75 \u00b5A, tight \u00b10.5% output accuracy, and additional functionality including an error flag output, shutdown control, and programmable output voltage capability.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
Output Voltage<\/td>\n3.0 V (Fixed)<\/td>\n<\/tr>\n
Corriente de salida<\/td>\n100 mA<\/td>\n<\/tr>\n
Input Voltage Range<\/td>\n2.3 V to 30 V<\/td>\n<\/tr>\n
Dropout Voltage (Typ)<\/td>\n350 mV @ 100 mA<\/td>\n<\/tr>\n
Output Accuracy<\/td>\n\u00b10.5%<\/td>\n<\/tr>\n
Quiescent Current (Typ)<\/td>\n75 \u00b5A<\/td>\n<\/tr>\n
Reference Voltage<\/td>\n1.235 V<\/td>\n<\/tr>\n
Line Regulation<\/td>\n0.1%<\/td>\n<\/tr>\n
Load Regulation<\/td>\n0.1%<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40\u00b0C to +125\u00b0C<\/td>\n<\/tr>\n
Paquete<\/td>\nSOIC-8<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • Ultra-low quiescent current of 75 \u00b5A typical for extended battery life<\/li>\n
  • Wide input voltage range up to 30 V<\/li>\n
  • Tight \u00b10.5% initial output voltage accuracy (‘A’ suffix)<\/li>\n
  • Error flag output signals out-of-regulation condition<\/li>\n
  • Logic-level shutdown input for power management<\/li>\n
  • Output programmable from 1.25 V to 29 V using external resistors<\/li>\n
  • Internal current and thermal limiting protection<\/li>\n
  • Requires only 1.0 \u00b5F output capacitor for stability<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Battery-powered computers and consumer electronics<\/li>\n
    • Industrial equipment requiring extended battery life<\/li>\n
    • Automotive analog input modules<\/li>\n
    • Logistics robot CPU boards<\/li>\n
    • Optical line cards and telecommunications equipment<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The onsemi LP2951ACD-3.0R2G is a micropower low-dropout (LDO) linear voltage regulator providing a fixed 3.0 V output at up to 100 mA. Housed in an SOIC-8 package, it features an extremely low quiescent current of 75 \u00b5A, tight \u00b10.5% output accuracy, and additional functionality including an error flag output, shutdown control, and programmable […]<\/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":[1790],"chip_brand":[144],"class_list":["post-10485","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo","tag-lp2951acd-3-0r2g","chip_brand-on"],"acf":{"brief_explanation":"100mA LDO, 3.0V fixed, 350mV dropout, 75\u00b5A Iq, \u00b10.5% accuracy, SOIC-8, shutdown+error flag","date_code":"","package_case":"SOIC-8 5.0 x 4.0 x 1.5 mm","in_stock":4563,"datasheet":"https:\/\/www.onsemi.com\/pub\/Collateral\/LP2950-D.PDF","price":"$0.21 @ 2.5ku","product_introduction":"The onsemi LP2951ACD-3.0R2G is a micropower low-dropout linear voltage regulator from the LP2951 family, providing a fixed 3.0 V output at up to 100 mA. The 'A' suffix indicates tight \u00b10.5% initial output accuracy. The device is specifically designed to maintain regulation with extremely low input-to-output voltage differentials, making it ideal for battery-powered applications. It features a very low quiescent bias current of 75 \u00b5A, significantly extending battery life. The LP2951 includes three additional features beyond basic regulation: an Error-bar output that signals an out-of-regulation condition (useful as a microprocessor power-on reset), a programmable output voltage capability from 1.25 V to 29 V via external resistors, and a logic-level shutdown input. Internal current and thermal limiting protection ensures safe operation under fault conditions.","working_principle":"The LP2951ACD-3.0R2G uses an internal PNP pass transistor as the regulating element, enabling low dropout voltage. The error amplifier compares a fraction of the output voltage (via internal resistor divider for fixed versions) with a precision 1.235 V bandgap reference. The amplifier output controls the pass transistor to maintain regulation. The dropout voltage of 350 mV at 100 mA occurs when the input-to-output differential falls below the saturation voltage of the PNP transistor. The error comparator monitors the output voltage and asserts the Error flag (active low) when the output drops approximately 5% below the nominal value. The shutdown pin, when driven above 2.0 V, disables the regulator output, reducing supply current to near zero. Internal current limiting and thermal shutdown protect against overload and overheating conditions.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      1<\/td>VOUT<\/td>Output<\/td>Regulated 3.0V output<\/td><\/tr>\n
      2<\/td>SNS<\/td>Input<\/td>Sense pin \u2014 connected to VOUT for fixed voltage operation<\/td><\/tr>\n
      3<\/td>ERROR<\/td>Output<\/td>Error flag output (open collector) \u2014 asserts low when output is out of regulation<\/td><\/tr>\n
      4<\/td>GND<\/td>Power<\/td>Ground reference<\/td><\/tr>\n
      5<\/td>SD<\/td>Input<\/td>Shutdown input \u2014 logic high (>2.0V) disables the regulator<\/td><\/tr>\n
      6<\/td>VOUT TAP<\/td>Output<\/td>5.0V tap \u2014 used for programming or sensing<\/td><\/tr>\n
      7<\/td>FB<\/td>Input<\/td>Feedback input \u2014 connect to VOUT TAP for fixed 3.0V, or to external divider for adjustable output<\/td><\/tr>\n
      8<\/td>VIN<\/td>Power<\/td>Input supply voltage (2.3V to 30V)<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • Battery-powered portable instruments requiring 3V regulated supply<\/li>\n
      • Automotive analog input modules with wide input voltage range<\/li>\n
      • Microcontroller power-on reset using the Error flag output<\/li>\n
      • Telecom optical line cards requiring low-noise local regulation<\/li>\n
      • Industrial control systems with battery backup power management<\/li>\n<\/ul>","alternative_models":"\n
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>\n
        onsemi<\/td>LP2951ACDR2G<\/td>SOIC-8<\/td>Adjustable output version<\/td><\/tr>\n
        onsemi<\/td>LP2951ACD-3.3R2G<\/td>SOIC-8<\/td>3.3V output variant<\/td><\/tr>\n
        Texas Instruments<\/td>LP2951ACDX-3.0\/NOPB<\/td>SOIC-8<\/td>Equivalent, same package<\/td><\/tr>\n
        Microchip<\/td>TCLP2951A-3.0I<\/td>SOIC-8<\/td>Pin-compatible alternative<\/td><\/tr>\n
        onsemi<\/td>LP2951ACDM-3.0RG<\/td>Micro8<\/td>Smaller package alternative<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/posts\/10485","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/comments?post=10485"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/posts\/10485\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/media?parent=10485"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/categories?post=10485"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/tags?post=10485"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/chip_brand?post=10485"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}