{"id":5585,"date":"2026-06-11T02:53:00","date_gmt":"2026-06-11T02:53:00","guid":{"rendered":"https:\/\/materialparts.com\/mc34063adr2g\/"},"modified":"2026-06-12T09:11:26","modified_gmt":"2026-06-12T09:11:26","slug":"mc34063adr2g","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/mc34063adr2g\/","title":{"rendered":"MC34063ADR2G"},"content":{"rendered":"

Productos<\/h2>\n

The MC34063ADR2G from onsemi is a 1.5A DC-DC converter control circuit supporting step-up, step-down, and voltage-inverting topologies in SOIC-8 for versatile power conversion.<\/p>\n

Especificaciones<\/h2>\n\n\n
Paquete<\/td>\nSOIC-8<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • See datasheet for complete specifications<\/li>\n
  • Industry-standard package<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Industrial control<\/li>\n
    • Consumer electronics<\/li>\n
    • Communication equipment<\/li>\n
    • Automotive electronics<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MC34063ADR2G from onsemi is a 1.5A DC-DC converter control circuit supporting step-up, step-down, and voltage-inverting topologies in SOIC-8 for versatile power conversion. Key Specifications Package SOIC-8 Features See datasheet for complete specifications Industry-standard package Applications Industrial control Consumer electronics Communication equipment Automotive electronics<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[31,13],"tags":[],"chip_brand":[144],"class_list":["post-5585","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","chip_brand-on"],"acf":{"brief_explanation":"DC-DC converter, step-up\/down\/inverting, 1.5A, SOIC-8","date_code":"","package_case":"SOIC-8","in_stock":3584,"datasheet":"https:\/\/www.onsemi.com\/pub\/Collateral\/MC34063A-D.PDF","price":"$0.40 @ 1ku","product_introduction":"The MC34063ADR2G from onsemi is a 1.5A DC-DC converter control circuit supporting step-up, step-down, and voltage-inverting topologies in SOIC-8 for versatile power conversion.","working_principle":"The MC34063ADR2G is a DC-DC converter control IC from onsemi in SOIC-8, capable of step-up (boost), step-down (buck), and voltage-inverting topologies with external components. It is one of the oldest and most widely used switching regulator ICs (introduced 1980s, still in production). The internal architecture: (1) A 1.25V bandgap reference; (2) A comparator that compares the scaled output voltage (via resistor divider on CII pin) with the reference; (3) An oscillator that generates the switching frequency from the external timing capacitor (CT pin); (4) A 1.5A Darlington NPN output switch (SWC\/SWE pins); (5) A peak current sense comparator (Ipk pin, 330mV threshold). The control loop: the oscillator sets the switch ON time; during ON time, current ramps up in the external inductor; if the peak current exceeds the Ipk threshold, the switch turns off early; the OFF time is set by the oscillator; the comparator regulates the output by skipping cycles or adjusting the duty cycle. In buck mode: the switch connects the inductor to VIN during ON time; during OFF time, the inductor current flows through the external Schottky diode to the output. Typical external components: inductor (100-470uH), Schottky diode (1A), timing capacitor (470pF-1nF for 25-100kHz), current sense resistor (0.2-1 ohm), and input\/output capacitors. Efficiency is typically 70-85%. The -ADR2G suffix specifies SOIC-8, lead-free. The MC34063 is used in automotive, industrial, and consumer electronics for simple, low-cost voltage conversion.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>SWC<\/td>Output<\/td>Switch collector (internal Darlington NPN collector, up to 40V)<\/td><\/tr>
      2<\/td>SWE<\/td>Output<\/td>Switch emitter (internal Darlington NPN emitter, connects to inductor\/diode)<\/td><\/tr>
      3<\/td>CT<\/td>Analog<\/td>Timing capacitor (sets switching frequency: f = 1\/(0.000055 x CT), 24kHz at 1nF)<\/td><\/tr>
      4<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>
      5<\/td>CII<\/td>Input<\/td>Comparator inverting input (1.25V reference, connect resistor divider from output)<\/td><\/tr>
      6<\/td>VCC<\/td>Power<\/td>Supply (3.0-40V, connect with 470uF electrolytic and 0.1uF ceramic)<\/td><\/tr>
      7<\/td>Ipk<\/td>Input<\/td>Peak current sense (connect sense resistor from VCC, Vpk=330mV threshold)<\/td><\/tr>
      8<\/td>DRC<\/td>Output<\/td>Driver collector (internal PNP driver collector, boost current gain)<\/td><\/tr><\/table>","application_scenarios":"
    • Industrial control<\/li>
    • Consumer electronics<\/li>
    • Communication equipment<\/li>
    • Automotive electronics<\/li>","alternative_models":"
      Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
      onsemi<\/td>MC34063ADR2G<\/td>SOIC-8<\/td>Same device, onsemi brand<\/td><\/tr>
      Texas Instruments<\/td>MC34063ADR<\/td>SOIC-8<\/td>Same device, TI brand<\/td><\/tr>
      onsemi<\/td>NCV33063ADR2G<\/td>SOIC-8<\/td>Automotive version, AEC-Q100 qualified<\/td><\/tr>
      STMicroelectronics<\/td>L4970A<\/td>DIP-20<\/td>5A buck regulator, more integrated, ST brand<\/td><\/tr>
      Texas Instruments<\/td>LM2596SX-5.0<\/td>TO-263<\/td>5V 3A SIMPLE SWITCHER, TI brand, easier to use<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/5585","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=5585"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/5585\/revisions"}],"predecessor-version":[{"id":6169,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/5585\/revisions\/6169"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=5585"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=5585"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=5585"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=5585"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}