L7908CV

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Fixed Negative Voltage Regulator, -8V Output
• Package: TO-220
• Essence: Linear Regulator
• Packaging/Quantity: Tube/50 pieces

Specifications

• Input Voltage Range: -10V to -35V
• Output Voltage: -8V
• Output Current: Up to 1.5A
• Dropout Voltage: 2V (typical)
• Line Regulation: 0.04% (typical)
• Load Regulation: 0.3% (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L7908CV IC 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 -8V output.

Functional Features

• Fixed Output Voltage: The L7908CV provides a stable -8V output voltage regardless of input variations.
• Overcurrent Protection: The IC incorporates overcurrent protection to safeguard connected devices.
• Thermal Shutdown: It includes a thermal shutdown feature that protects the IC from excessive heat.
• Short-Circuit Protection: The L7908CV is designed to withstand short-circuit conditions without damage.

Advantages and Disadvantages

Advantages: - Simple to use and integrate into electronic circuits. - Reliable and stable output voltage. - Offers protection features for connected devices.

Disadvantages: - Limited output current capacity. - Requires external capacitors for stability.

Working Principles

The L7908CV is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a stable -8V output.

Detailed Application Field Plans

The L7908CV is commonly used in various applications, including: 1. Power Supply Units: It can be used as a negative voltage regulator in power supply units for electronic devices. 2. Audio Amplifiers: The IC can provide a stable -8V bias voltage for audio amplifier circuits. 3. Industrial Control Systems: It finds application in industrial control systems that require a regulated negative voltage source.

Detailed and Complete Alternative Models

Some alternative models to the L7908CV include: - LM7908: A similar fixed negative voltage regulator with -8V output. - MC7908: Another fixed negative voltage regulator with -8V output. - UA7908: A negative voltage regulator with -8V output from Texas Instruments.

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