L7915ACV

Product Overview

• Category: Voltage Regulator
• Use: To regulate and stabilize the output voltage in electronic circuits
• Characteristics:
  • Negative voltage regulator
  • Fixed output voltage of -15V
  • High precision and low dropout voltage
• Package: TO-220
• Essence: Integrated circuit (IC) voltage regulator
• Packaging/Quantity: Available in reels or tubes, quantity varies based on manufacturer

Specifications

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

Pin Configuration

The L7915ACV has three pins:

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

Functional Features

• Voltage Regulation: The L7915ACV maintains a constant -15V output voltage regardless of variations in input voltage or load conditions.
• Short Circuit Protection: The device includes internal protection against short circuits, preventing damage to the regulator and the connected circuitry.
• Thermal Overload Protection: Built-in thermal shutdown circuitry protects the regulator from overheating, ensuring safe operation even under high temperature conditions.
• Low Dropout Voltage: The L7915ACV has a low dropout voltage, minimizing power dissipation and maximizing efficiency.

Advantages and Disadvantages

Advantages: - High precision voltage regulation - Short circuit and thermal overload protection - Wide operating temperature range - Low dropout voltage

Disadvantages: - Fixed output voltage limits flexibility in certain applications - Requires external capacitors for stability

Working Principles

The L7915ACV 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 from a voltage divider network connected to the output pin. The error amplifier adjusts the pass transistor to maintain a constant -15V output voltage.

Detailed Application Field Plans

The L7915ACV is commonly used in various electronic circuits, including:

1. Power Supplies: Provides a stable -15V supply for analog and digital circuits.
2. Audio Amplifiers: Regulates the negative power supply rail for audio amplification stages.
3. Industrial Control Systems: Ensures a reliable and regulated voltage for control circuitry.
4. Automotive Electronics: Used in automotive applications requiring a regulated negative voltage.

Detailed and Complete Alternative Models

1. LM7915: Similar characteristics and pin configuration, manufactured by Texas Instruments.
2. MC7915: Equivalent negative voltage regulator offered by ON Semiconductor.
3. UA7915: Negative voltage regulator with comparable specifications, produced by Fairchild Semiconductor.

These alternative models can be used as substitutes for the L7915ACV based on specific requirements and availability.

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