L7905C-D2TR

Product Overview

Category

L7905C-D2TR belongs to the category of voltage regulators.

Use

It is commonly used to regulate and stabilize voltage in electronic circuits.

Characteristics

• Input Voltage Range: -35V to -10V
• Output Voltage: -5V
• Maximum Output Current: 1A
• Dropout Voltage: 2V
• Operating Temperature Range: -40°C to +125°C

Package

L7905C-D2TR comes in a TO-220 package, which is a widely used through-hole package for power semiconductors.

Essence

The essence of L7905C-D2TR is to provide a stable and regulated output voltage of -5V, regardless of variations in the input voltage.

Packaging/Quantity

L7905C-D2TR is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Input Voltage Range: -35V to -10V
• Output Voltage: -5V
• Maximum Output Current: 1A
• Dropout Voltage: 2V
• Line Regulation: ±0.2%
• Load Regulation: ±0.4%
• Quiescent Current: 6mA
• Ripple Rejection Ratio: 62dB
• Thermal Resistance (Junction to Ambient): 50°C/W
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

L7905C-D2TR has three pins:

1. Input Pin (VIN): This pin is connected to the input voltage source.
2. Ground Pin (GND): This pin is connected to the ground reference.
3. Output Pin (VOUT): This pin provides the regulated -5V output voltage.

Functional Features

• Voltage Regulation: L7905C-D2TR ensures a stable output voltage of -5V, even with varying input voltages.
• 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.

Advantages and Disadvantages

Advantages

• Provides a regulated -5V output voltage.
• Wide operating temperature range (-40°C to +125°C).
• Offers overcurrent protection and thermal shutdown features.

Disadvantages

• Dropout voltage of 2V may result in power dissipation and reduced efficiency.
• Limited maximum output current of 1A.

Working Principles

L7905C-D2TR is a negative voltage regulator that utilizes 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 constant -5V output.

Detailed Application Field Plans

L7905C-D2TR finds applications in various electronic circuits where a stable -5V voltage supply is required. Some common application fields include:

1. Power Supply Units: It can be used in power supply units to provide a regulated -5V rail for powering analog and digital components.
2. Audio Amplifiers: L7905C-D2TR can be employed in audio amplifiers to generate a stable negative voltage bias for certain amplifier stages.
3. Industrial Control Systems: It can be utilized in industrial control systems to ensure a reliable -5V power source for controlling sensors, actuators, and other components.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to L7905C-D2TR are:

1. LM7905: A widely used negative voltage regulator with similar specifications and pin configuration.
2. MC79M05: Another negative voltage regulator suitable for -5V applications.
3. LT1085CT-5: A high-performance negative voltage regulator with adjustable output voltage.

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

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