Voltage Regulator 5V 7805 - TO-220 L7805CV
The L7805CV is a fixed +5V positive linear voltage regulator in a TO-220 package. It provides stable 5V output from an input range of 7V to 35V and can deliver up to 1A output current. Featuring internal thermal overload and short-circuit protection, it ensures safe and reliable operation. Due to power dissipation, a heat sink is recommended for higher current applications. It is widely used in microcontroller, sensor, and embedded system power supply designs.
المنظم L7805CV هو منظم جهد خطي موجب بخرج ثابت +5 فولت ضمن حزمة TO-220. يوفر جهد 5 فولت مستقر من دخل يتراوح بين 7 فولت و35 فولت، وبتيار يصل إلى 1 أمبير. يحتوي على حماية داخلية من ارتفاع الحرارة وقصر الدائرة لضمان التشغيل الآمن. يُنصح باستخدام مشتت حراري عند التيارات العالية. يُستخدم على نطاق واسع في تغذية المتحكمات الدقيقة والحساسات والأنظمة الإلكترونية المختلفة.
The L7805CV is a popular fixed 5V positive linear voltage regulator from the 78xx series. The “78” indicates a positive voltage regulator, while “05” represents the fixed 5V output. It is widely used in electronic circuits to provide a stable and regulated +5V supply from a higher and varying input voltage.
This regulator operates with an input voltage typically between 7V and 35V and can supply up to 1A of output current under proper thermal conditions. Because it is a linear regulator, excess voltage is dissipated as heat. For example, with a 12V input and 1A load, approximately 7W of power is dissipated, so a heat sink is recommended for high-current applications.
The L7805CV includes internal thermal overload protection and short-circuit current limiting, ensuring safe operation. For stable performance, two external capacitors are typically used: 0.33µF at the input and 0.1µF at the output, placed close to the regulator terminals.
It is commonly used in power supplies for microcontrollers, sensors, logic circuits, and many embedded systems.
Specifications
Output Voltage: +5V (Fixed)
Output Current: Up to 1A (typical), commonly used up to 500mA without heavy cooling
Input Voltage Range: 7V to 35V
Minimum Input Voltage: 7V
Maximum Input Voltage: 25V (recommended operating), up to 35V absolute
Operating Current (IQ): 5mA
Dropout Voltage: ~2V (typical)
Load Regulation: 100mV
Line Regulation: 100mV
Maximum Junction Temperature: 125°C
Operating Temperature Range: 0°C to 125°C
Protection: Thermal overload and short-circuit current limiting
Mechanical Details
Package/Case: TO-220-3
Mounting Type: Through Hole
Polarity: Positive
Number of Outputs: 1
Output Type: Fixed
Dimensions (L × W × H): 10.4 × 4.6 × 9.15 mm
Applications
+5V regulated power supply for microcontrollers
Power supply for sensors and digital circuits
Arduino and embedded system projects
Adjustable regulator circuits (with external components)
Current limiter circuits
Dual regulated power supplies
Output polarity-reversal protection circuits