{"id":10190,"date":"2026-07-09T04:53:20","date_gmt":"2026-07-09T04:53:20","guid":{"rendered":"https:\/\/materialparts.com\/mc7805ctg-2\/"},"modified":"2026-07-09T04:53:20","modified_gmt":"2026-07-09T04:53:20","slug":"mc7805ctg-2","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/mc7805ctg-2\/","title":{"rendered":"MC7805CTG"},"content":{"rendered":"

Productos<\/h2>\n

The MC7805CTG from onsemi is a positive fixed linear voltage regulator delivering a stable 5V output at up to 1A. Housed in the industry-standard TO-220-3 package, it is part of the MC78xx family of monolithic integrated circuits designed for local and on-card voltage regulation. With internal thermal shutdown, short-circuit current limiting, and safe-area compensation, the device requires no external components for basic operation, making it one of the most widely used 5V linear regulators in embedded and industrial designs.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Output Voltage<\/td>\n5V (Fixed)<\/td>\n<\/tr>\n
Corriente de salida<\/td>\n1A<\/td>\n<\/tr>\n
Input Voltage Range<\/td>\n7V to 35V<\/td>\n<\/tr>\n
Dropout Voltage<\/td>\n2V @ 1A (Typical)<\/td>\n<\/tr>\n
Corriente de reposo<\/td>\n6.5mA (Max)<\/td>\n<\/tr>\n
Line Regulation<\/td>\n20mV<\/td>\n<\/tr>\n
Load Regulation<\/td>\n25mV<\/td>\n<\/tr>\n
Output Voltage Tolerance<\/td>\n±4%<\/td>\n<\/tr>\n
PSRR<\/td>\n83dB @ 120Hz<\/td>\n<\/tr>\n
Output Noise<\/td>\n10µV<\/td>\n<\/tr>\n
Protection Features<\/td>\nOver Temperature, Short Circuit, Safe Area<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n0°C to 125°C<\/td>\n<\/tr>\n
Paquete<\/td>\nTO-220-3<\/td>\n<\/tr>\n
Thermal Resistance θJA<\/td>\n65°C\/W<\/td>\n<\/tr>\n
Thermal Resistance θJC<\/td>\n5°C\/W<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • Output current in excess of 1.0A with adequate heatsinking<\/li>\n
  • No external components required for basic operation<\/li>\n
  • Internal thermal overload protection<\/li>\n
  • Internal short-circuit current limiting<\/li>\n
  • Output transistor safe-area compensation<\/li>\n
  • Output voltage available in 1.5%, 2%, and 4% tolerance<\/li>\n
  • Available in TO-220, D2PAK-3, and DPAK-3 packages<\/li>\n
  • NCV prefix variants available for automotive applications<\/li>\n
  • Pb-free packages available<\/li>\n
  • High PSRR of 83dB at 120Hz for excellent ripple rejection<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Power supply regulation for microcontrollers and digital logic<\/li>\n
    • Local on-card voltage regulation in embedded systems<\/li>\n
    • Industrial control systems and PLC power rails<\/li>\n
    • Consumer electronics and battery-powered devices<\/li>\n
    • Automotive electronics (NCV prefix variants)<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MC7805CTG from onsemi is a positive fixed linear voltage regulator delivering a stable 5V output at up to 1A. Housed in the industry-standard TO-220-3 package, it is part of the MC78xx family of monolithic integrated circuits designed for local and on-card voltage regulation. With internal thermal shutdown, short-circuit current limiting, and safe-area […]<\/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":[1465],"chip_brand":[144],"class_list":["post-10190","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo","tag-mc7805ctg","chip_brand-on"],"acf":{"brief_explanation":"1A positive fixed linear voltage regulator, 5V output, TO-220-3, 2V dropout, 83dB PSRR","date_code":"","package_case":"TO-220-3 (10.28 x 4.82 x 8.9 mm)","in_stock":12942,"datasheet":"https:\/\/www.onsemi.com\/pub\/Collateral\/MC7800E-D.PDF","price":"$0.24 @ 1ku","product_introduction":"The MC7805CTG is a member of onsemi MC78xx series of positive fixed linear voltage regulators, engineered to provide a reliable and stable 5V DC output from an unregulated input supply ranging from 7V to 35V. As one of the most iconic and widely deployed voltage regulators in the electronics industry, the MC7805 family has served as the backbone of countless power supply designs across industrial, consumer, and automotive segments for decades.\n\nManufactured using a robust bipolar process technology (0.8um to 3um), the MC7805CTG is a monolithic integrated circuit that integrates a voltage reference, error amplifier, pass transistor, and protection circuitry into a single three-terminal device. The TO-220-3 through-hole package provides excellent thermal performance with a junction-to-case thermal resistance of only 5 C\/W, enabling the device to deliver its full 1A output current when paired with an appropriate heatsink.\n\nThe device features comprehensive internal protection mechanisms including thermal shutdown, which activates when the junction temperature exceeds safe limits, short-circuit current limiting to protect against output faults, and safe-area compensation that ensures the pass transistor operates within its safe operating area under all conditions. With a PSRR of 83dB at 120Hz, the MC7805CTG effectively suppresses input ripple, delivering a clean and stable 5V rail for sensitive analog and digital circuits.","working_principle":"The MC7805CTG operates as a series-pass linear voltage regulator based on a negative-feedback control loop. Its internal architecture can be divided into four key subsystems:\n\n1. Bandgap Voltage Reference: A precision bandgap circuit generates a stable reference voltage that is largely immune to temperature variations and supply fluctuations, serving as the benchmark for the output voltage regulation loop.\n\n2. Error Amplifier: The error amplifier continuously compares a scaled-down version of the output voltage (via an internal resistor divider) against the bandgap reference. Any deviation generates a correction signal that drives the pass transistor to restore the output to the nominal 5V level.\n\n3. Series Pass Transistor: A power bipolar junction transistor (BJT) connected in series between the input and output acts as a variable resistance element. The error amplifier output controls the transistor bias current, adjusting its effective resistance to maintain regulation. The voltage difference between input and output (dropout voltage) is dropped across this transistor and dissipated as heat.\n\n4. Protection Circuits: Three independent protection mechanisms safeguard the device: (a) thermal shutdown disables the pass transistor when junction temperature exceeds approximately 150 C, (b) short-circuit current limiting restricts output current to a safe level during fault conditions, and (c) safe-area compensation reduces the current limit as the input-output differential voltage increases, ensuring the pass transistor remains within its safe operating area.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>Input (VIN)<\/td>Power Input<\/td>Unregulated DC input voltage (7V to 35V). A 0.33uF input bypass capacitor is recommended if the regulator is located more than 4 inches from the power supply filter.<\/td><\/tr>
      2<\/td>Ground (GND)<\/td>Ground<\/td>Common ground reference. This pin is also electrically connected to the TO-220 mounting tab for heatsink thermal coupling.<\/td><\/tr>
      3<\/td>Output (VOUT)<\/td>Power Output<\/td>Regulated 5V DC output. A 0.1uF output capacitor is recommended to improve transient response and stability.<\/td><\/tr><\/table>","application_scenarios":"
      • Microcontroller Power Supplies:<\/strong> Provides a stable 5V rail for 5V logic microcontrollers, sensors, and peripheral ICs in embedded designs.<\/li>
      • Industrial Control Systems:<\/strong> Used in PLCs, motor drives, and factory automation equipment for local on-card 5V regulation from 12V or 24V industrial bus supplies.<\/li>
      • Consumer Electronics:<\/strong> Powers 5V digital logic in appliances, audio equipment, and display modules where a simple, reliable, and cost-effective regulator is required.<\/li>
      • Automotive Electronics:<\/strong> NCV-prefix variants (NCV7805) are qualified for automotive applications, providing 5V regulation from the vehicle 12V battery supply.<\/li>
      • Prototyping and Education:<\/strong> The industry-standard TO-220 package and simplicity of use make the MC7805CTG a staple in breadboard prototypes, Arduino shields, and educational lab kits.<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Output Current<\/th>Notes<\/th><\/tr>
        Texas Instruments<\/td>UA7805CKCS<\/td>TO-220-3<\/td>1A<\/td>Direct substitute, pin-compatible<\/td><\/tr>
        STMicroelectronics<\/td>L78M05ABV<\/td>TO-220-3<\/td>500mA<\/td>Lower current, similar footprint<\/td><\/tr>
        Texas Instruments<\/td>LM2931AT-5.0\/NOPB<\/td>TO-220-3<\/td>100mA<\/td>Low dropout alternative, lower current<\/td><\/tr>
        onsemi<\/td>MC7805CDTG<\/td>TO-220-3<\/td>1A<\/td>Same family, different tolerance grade<\/td><\/tr>
        onsemi<\/td>MC7805BD2TG<\/td>D2PAK-3<\/td>1A<\/td>SMD variant, surface mount equivalent<\/td><\/tr>
        onsemi<\/td>MC7805CD2TG<\/td>D2PAK-3<\/td>1A<\/td>SMD variant for automated assembly<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/10190","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=10190"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/10190\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=10190"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=10190"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=10190"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=10190"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}