LT1083CP#PBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: High current, low dropout voltage, adjustable output voltage
• Package: TO-220
• Essence: Linear regulator
• Packaging/Quantity: Tube packaging, 25 pieces per tube

Specifications

• Input Voltage Range: 3.5V to 30V
• Output Voltage Range: 1.2V to 28V
• Output Current: Up to 7.5A
• Dropout Voltage: 1.5V at 7.5A
• Line Regulation: 0.015% typical
• Load Regulation: 0.1% typical
• Ripple Rejection: 75dB typical
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LT1083CP#PBF has three pins:

1. VIN (Pin 1): Input voltage pin.
2. VOUT (Pin 2): Output voltage pin.
3. ADJ (Pin 3): Adjust pin for setting the output voltage.

Functional Features

• High current capability: The LT1083CP#PBF can handle up to 7.5A of output current, making it suitable for power-hungry applications.
• Low dropout voltage: With a dropout voltage of only 1.5V at maximum load, this regulator minimizes power dissipation and improves efficiency.
• Adjustable output voltage: The output voltage can be adjusted from 1.2V to 28V using an external resistor divider connected to the ADJ pin.
• Overcurrent protection: The LT1083CP#PBF incorporates overcurrent protection to safeguard against excessive load currents.

Advantages and Disadvantages

Advantages: - High current capability allows for powering demanding loads. - Low dropout voltage minimizes power dissipation. - Adjustable output voltage provides flexibility in various applications. - Overcurrent protection enhances system reliability.

Disadvantages: - Linear regulators like the LT1083CP#PBF are less efficient compared to switching regulators. - Heat dissipation may be a concern at high output currents.

Working Principles

The LT1083CP#PBF is a linear regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with a fraction of the output voltage through a feedback network. The pass transistor adjusts its resistance to maintain a stable output voltage, compensating for changes in input voltage and load conditions.

Detailed Application Field Plans

The LT1083CP#PBF finds applications in various fields, including:

1. Power supplies: It can be used as a voltage regulator in power supply circuits for electronic devices, ensuring a stable and regulated output voltage.
2. Automotive electronics: The LT1083CP#PBF can be employed in automotive systems to provide regulated voltages for various components, such as sensors, actuators, and control modules.
3. Industrial equipment: It is suitable for use in industrial machinery, where reliable and precise voltage regulation is crucial for proper operation.
4. Audio amplifiers: The LT1083CP#PBF can be utilized in audio amplifier circuits to deliver a stable power supply voltage, minimizing distortion and improving audio quality.

Detailed and Complete Alternative Models

Some alternative models to the LT1083CP#PBF include:

1. LM317: A popular adjustable linear regulator with similar specifications and pin configuration.
2. LT1084: A higher current version of the LT1083CP#PBF, capable of delivering up to 5A of output current.
3. LM7805: A fixed-output linear regulator that provides a regulated 5V output voltage.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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