L7815CD2T-TR

Product Overview

Category

L7815CD2T-TR belongs to the category of voltage regulators.

Use

This product is commonly used in electronic circuits to regulate and stabilize the output voltage.

Characteristics

• Voltage Regulation: The L7815CD2T-TR provides a fixed output voltage of 15 volts.
• Current Capacity: It can handle a maximum current of 1.5 amperes.
• Input Voltage Range: The input voltage range is typically between 17 volts and 35 volts.
• Temperature Range: This voltage regulator operates within a temperature range of -40°C to +125°C.

Package

The L7815CD2T-TR comes in a TO-252 package, also known as DPAK (Plastic Packaged Surface Mount).

Essence

The essence of this product lies in its ability to maintain a stable output voltage despite fluctuations in the input voltage.

Packaging/Quantity

The L7815CD2T-TR is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Output Voltage: 15 volts
• Maximum Output Current: 1.5 amperes
• Input Voltage Range: 17 volts to 35 volts
• Dropout Voltage: 2 volts (typical)
• Line Regulation: 0.04% (typical)
• Load Regulation: 0.1% (typical)
• Quiescent Current: 6 mA (typical)
• Thermal Resistance: 50°C/W (junction-to-ambient)

Detailed Pin Configuration

The L7815CD2T-TR has three pins:

1. Input (Pin 1): This pin is connected to the input voltage source.
2. Ground (Pin 2): This pin is connected to the ground or common reference point.
3. Output (Pin 3): This pin provides the regulated output voltage.

Functional Features

• Voltage Regulation: The L7815CD2T-TR ensures a constant output voltage of 15 volts, regardless of input voltage fluctuations.
• Overcurrent Protection: It incorporates overcurrent protection to safeguard the circuit from excessive current flow.
• Thermal Shutdown: In case of excessive temperature, the device shuts down to prevent damage.
• Short Circuit Protection: The voltage regulator is designed to withstand short circuits without causing any harm.

Advantages and Disadvantages

Advantages

• Stable Output: The L7815CD2T-TR maintains a consistent output voltage, ensuring reliable performance of connected devices.
• Easy Integration: Its compact package and surface mount design make it easy to integrate into various electronic circuits.
• Overcurrent and Short Circuit Protection: The built-in protection features enhance the safety and durability of the circuit.

Disadvantages

• Limited Output Current: The maximum output current of 1.5 amperes may not be sufficient for high-power applications.
• Dropout Voltage: The 2-volt dropout voltage can result in some power loss.

Working Principles

The L7815CD2T-TR operates based on the principle of linear voltage regulation. It uses a series pass transistor to regulate the output voltage. The input voltage is compared to a reference voltage, and the difference is adjusted by controlling the pass transistor. This feedback mechanism ensures that the output voltage remains constant despite variations in the input voltage.

Detailed Application Field Plans

The L7815CD2T-TR finds application in various electronic systems where a stable 15-volt power supply is required. Some common application fields include:

1. Power Supply Units: It can be used in power supply units for audio amplifiers, microcontrollers, and other electronic devices.
2. Industrial Control Systems: The voltage regulator is suitable for industrial control systems that require a reliable and regulated power source.
3. Automotive Electronics: It can be utilized in automotive electronics, such as car audio systems or dashboard displays.

Detailed and Complete Alternative Models

1. LM7815: This is a popular alternative model from Texas Instruments with similar specifications and pin configuration.
2. MC7815: Another alternative model from ON Semiconductor, offering comparable performance and compatibility.
3. UA7815: A voltage regulator from Fairchild Semiconductor, providing a stable 15-volt output.

These alternative models can be considered based on specific requirements and availability.

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