MC7808BDTRKG

Product Overview

• Category: Integrated Circuit
• Use: Voltage Regulator
• Characteristics:
  • Fixed Output Voltage: 8V
  • Maximum Input Voltage: 35V
  • Output Current: 1A
  • Package Type: DPAK (TO-252)
  • Operating Temperature Range: -40°C to +125°C
  • RoHS Compliant: Yes
• Package: Tape and Reel
• Essence: MC7808BDTRKG is a voltage regulator integrated circuit that provides a fixed output voltage of 8V. It is commonly used in electronic circuits to regulate the voltage and ensure a stable power supply.
• Packaging/Quantity: The MC7808BDTRKG is available in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Input Voltage Range: Up to 35V
• Output Voltage: 8V ±4%
• Output Current: 1A
• Dropout Voltage: 2V (typical)
• Line Regulation: 0.07% (typical)
• Load Regulation: 0.1% (typical)
• Quiescent Current: 5mA (typical)
• Ripple Rejection Ratio: 62dB (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The MC7808BDTRKG has three pins:

1. Input Pin (Pin 1): Connects to the input voltage source.
2. Ground Pin (Pin 2): Connected to the ground or common reference point.
3. Output Pin (Pin 3): Provides the regulated output voltage.

Functional Features

• Voltage Regulation: The MC7808BDTRKG maintains a constant output voltage of 8V, regardless of variations in the input voltage or load conditions.
• Overcurrent Protection: It includes internal current limiting circuitry to protect against excessive current draw.
• Thermal Shutdown: In case of overheating, the device shuts down to prevent damage.
• Short Circuit Protection: The regulator is designed to withstand short circuits without causing any harm.

Advantages and Disadvantages

Advantages: - Provides a stable and regulated output voltage. - Suitable for a wide range of applications. - Compact and easy to integrate into electronic circuits. - Offers protection against overcurrent and short circuits. - Operates over a wide temperature range.

Disadvantages: - Fixed output voltage may not be suitable for all applications. - Dropout voltage of 2V may limit its use in low voltage applications.

Working Principles

The MC7808BDTRKG is based on a linear voltage regulator design. It utilizes a series pass transistor to regulate the output voltage. When the input voltage exceeds the desired output voltage, the excess voltage is dropped across the pass transistor, ensuring a constant output voltage. The internal circuitry monitors the output voltage and adjusts the pass transistor accordingly to maintain the desired voltage level.

Detailed Application Field Plans

The MC7808BDTRKG can be used in various applications that require a stable 8V power supply. Some common application fields include:

1. Consumer Electronics: Used in audio amplifiers, DVD players, and set-top boxes.
2. Automotive: Provides regulated voltage for automotive electronics such as car radios and navigation systems.
3. Industrial Control Systems: Used in control panels, motor drives, and power supplies.
4. Telecommunications: Provides regulated voltage for telecommunication equipment like routers and switches.
5. Medical Devices: Used in medical instruments and equipment that require a stable power supply.

Detailed and Complete Alternative Models

• LM7808: Similar voltage regulator with the same output voltage of 8V.
• UA7808: Another alternative with an 8V fixed output voltage.
• L78M08: Voltage regulator with a fixed output voltage of 8V, available in different package types.

These alternative models offer similar functionality and can be used as substitutes for the MC7808BDTRKG in various applications.

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