LM7808CT

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LM7808CT

V-REG 8V 1.0A 4%

  • Fabricante
  • Mfr. Parte #LM7808CT
  • Paquete TO-220-3
  • Hoja de datos
  • En stock2516

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Descripción general

Description

The LM7808CT is a voltage regulator integrated circuit (IC) that provides a stable 8V output from a higher input voltage, typically ranging from 10.5V to 35V. Part of the 78xx series of regulators, it is designed for use in a variety of electronic applications requiring a reliable and consistent voltage supply. The "CT" designation typically refers to the TO-220 package, which allows for easy mounting and heat dissipation.
Key features of the LM7808CT include thermal overload protection, short-circuit protection, and a built-in current limiting mechanism, safeguarding both the IC and the connected circuits. It is capable of delivering up to 1.5A of output current, making it suitable for powering moderate loads. This regulator is widely used in consumer electronics, telecommunications, and other applications where a steady and noise-free 8V power supply is crucial.
The LM7808CT is valued for its simplicity, requiring only a few additional passive components (like capacitors) to function effectively, which helps in reducing design complexity and cost. It's an ideal choice for hobbyists and professionals alike when a straightforward voltage regulation solution is needed.

Features

The LM7808CT is a fixed linear voltage regulator designed to provide a stable 8V output voltage with a maximum output current of 1.5A. Key features include:
1. Output Voltage: Provides a consistent 8V output, suitable for various electronic applications requiring a stable voltage source.
2. Input Voltage Range: Typically accepts input voltages from 10.5V to 35V, ensuring flexibility in power supply options.
3. Current Capability: Can deliver up to 1.5A of output current, making it suitable for powering moderate-load devices.
4. Thermal Protection: Includes built-in thermal overload protection to prevent damage from overheating, enhancing reliability.
5. Short-Circuit Protection: Features internal current limiting to protect the device and connected components from short-circuit conditions.
6. Dropout Voltage: Generally exhibits a dropout voltage of around 2V, making it efficient for applications where the input voltage is only slightly higher than the output voltage.
7. TO-220 Package: Comes in a TO-220 package, providing good heat dissipation and ease of mounting with a heatsink if required.
8. Reliable Performance: Known for robust and reliable performance in a variety of electronic circuits, such as power supply units and battery chargers.
These features make the LM7808CT a versatile component for designers needing dependable voltage regulation in their projects.

Package

The LM7808CT is a voltage regulator in a TO-220 package. The TO-220 is a widely used package type for power semiconductors, featuring three leads and a metal tab for mounting and heat dissipation.

Pinout

The LM7808CT is a three-terminal voltage regulator. It provides a fixed output voltage and is part of the LM78xx series. This particular model offers an output voltage of 8 volts.
The pin count and functions are as follows:
1. Pin 1 (Input): This pin is connected to the unregulated input voltage that you wish to regulate to 8 volts. It's essential to ensure that this input voltage is higher than the desired output voltage plus a dropout voltage of around 2 volts (typically 10-35 volts input).
2. Pin 2 (Ground): This pin is used as the ground reference for both the input and the output voltages. It is connected to the ground of the input supply.
3. Pin 3 (Output): This pin provides the regulated output voltage of 8 volts. It connects to the load requiring the regulated voltage.
The LM7808CT is commonly used in power management applications due to its simplicity and reliability. It also typically includes internal current-limiting and thermal shutdown features for safety.

Manufacturer

The LM7808CT is manufactured by various semiconductor companies, including Texas Instruments and ON Semiconductor. These companies are major players in the electronics industry, specializing in the design and manufacturing of semiconductors and integrated circuits. Texas Instruments is a global technology company known for its wide range of electronic products and has a significant presence in the analog and embedded processing markets. ON Semiconductor, now known as onsemi, focuses on energy-efficient innovations, offering a broad portfolio that includes power and signal management, logic, discrete, and custom devices. Both companies serve diverse markets such as automotive, industrial, consumer electronics, communications, and computing, providing essential components for electronic devices and systems.

Application

The LM7808CT is a voltage regulator that provides a stable 8V output from a higher voltage input. It is commonly used in power supply circuits for electronic devices, automotive electronics, and consumer electronics to ensure consistent voltage for microcontrollers, sensors, and other components. Its applications include battery chargers, LED drivers, and audio equipment. Its robust design also makes it suitable for industrial applications where reliable voltage regulation is essential.

Equivalent

The LM7808CT is a voltage regulator providing a fixed 8V output. Equivalent products include the L7808CV, MC7808CT, UA7808CKT, and NTE961. These alternatives offer similar functionality and specifications, typically delivering up to 1A current with an 8V regulated output. Always check the datasheet for pin configuration and thermal characteristics to ensure compatibility.

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