LM7915CT/NOPB

Product Overview

• Category: Linear Voltage Regulator
• Use: To regulate and stabilize the output voltage in electronic circuits
• Characteristics:
  • Negative voltage regulator
  • Fixed output voltage of -15V
  • High accuracy and low dropout voltage
  • Thermal shutdown protection
• Package: TO-220
• Essence: Integrated circuit (IC)
• Packaging/Quantity: Tape and reel, 2,500 units per reel

Specifications

• Input Voltage Range: -35V to -20V
• Output Voltage: -15V
• Output Current: Up to 1A
• Dropout Voltage: 2V (maximum)
• Line Regulation: 0.04% (typical)
• Load Regulation: 0.1% (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LM7915CT/NOPB has three pins:

1. Input Pin (Pin 1): Connects to the input voltage source.
2. Ground Pin (Pin 2): Connected to the ground reference.
3. Output Pin (Pin 3): Provides the regulated -15V output voltage.

Functional Features

• Voltage Regulation: The LM7915CT/NOPB ensures a stable -15V output voltage regardless of variations in the input voltage or load conditions.
• Thermal Shutdown Protection: In case of excessive temperature, the device shuts down to prevent damage.
• High Accuracy: The regulator provides precise voltage regulation with low deviations.
• Low Dropout Voltage: The dropout voltage is minimal, allowing efficient operation even when the input voltage is close to the desired output voltage.

Advantages and Disadvantages

Advantages: - Reliable voltage regulation - High accuracy and stability - Thermal shutdown protection ensures safety - Suitable for various electronic applications

Disadvantages: - Fixed output voltage limits flexibility in certain applications - Requires external components for proper operation

Working Principles

The LM7915CT/NOPB is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It compares the reference voltage with the feedback voltage and adjusts the pass transistor accordingly to maintain a stable -15V output.

Detailed Application Field Plans

The LM7915CT/NOPB finds applications in various electronic systems, including:

1. Power Supplies: Used to provide a regulated -15V supply for analog circuits.
2. Audio Amplifiers: Ensures a stable negative voltage supply for audio amplification stages.
3. Industrial Control Systems: Provides a reliable negative voltage source for control circuitry.
4. Test and Measurement Equipment: Used to generate a precise -15V reference voltage for calibration purposes.

Detailed and Complete Alternative Models

Some alternative models to the LM7915CT/NOPB include:

1. LM7912CT/NOPB: Negative voltage regulator with a fixed output voltage of -12V.
2. LM7905CT/NOPB: Negative voltage regulator with a fixed output voltage of -5V.
3. LM337T/NOPB: Adjustable negative voltage regulator with an output voltage range from -1.2V to -37V.

These alternatives offer different fixed or adjustable output voltages to suit specific application requirements.

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