LT3080ET#31PBF

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High precision adjustable voltage regulator - Low dropout voltage - Wide input voltage range - High output current capability - Thermal shutdown protection - Adjustable current limit

Package: TO-220-3

Essence: The LT3080ET#31PBF is a high-performance voltage regulator IC designed to provide a precise and adjustable output voltage. It offers excellent line and load regulation, making it suitable for various applications requiring stable power supply.

Packaging/Quantity: The LT3080ET#31PBF is available in a TO-220-3 package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 1.2V to 36V
• Output Voltage Range: 0.04V to 34.5V
• Output Current: Up to 1.1A
• Dropout Voltage: 350mV at 1A
• Line Regulation: 0.015% typical
• Load Regulation: 0.1% typical
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LT3080ET#31PBF has three pins:

1. VIN (Pin 1): Input voltage pin.
2. GND (Pin 2): Ground reference pin.
3. VOUT (Pin 3): Output voltage pin.

Functional Features

• Adjustable Output Voltage: The LT3080ET#31PBF allows users to adjust the output voltage within a wide range, providing flexibility for different applications.
• High Output Current Capability: With a maximum output current of 1.1A, this voltage regulator can handle demanding loads.
• Thermal Shutdown Protection: The IC incorporates thermal shutdown protection, which prevents damage due to excessive temperature.
• Adjustable Current Limit: Users can set the current limit to protect the regulator and the load from excessive current.

Advantages

• High precision and stability in voltage regulation.
• Wide input voltage range allows for versatile applications.
• Low dropout voltage minimizes power dissipation.
• Excellent line and load regulation ensure consistent performance.
• Thermal shutdown protection enhances reliability.
• Adjustable current limit provides additional protection.

Disadvantages

• Relatively high cost compared to standard voltage regulators.
• Requires external components for proper operation.
• Limited output current compared to some specialized regulators.

Working Principles

The LT3080ET#31PBF operates as a linear voltage regulator. It uses a feedback mechanism to maintain a stable output voltage regardless of changes in the input voltage or load conditions. By adjusting the resistance between the VOUT pin and GND, users can set the desired output voltage.

Detailed Application Field Plans

The LT3080ET#31PBF finds applications in various fields, including:

1. Power Supply Design: It can be used to regulate voltages in power supply circuits for electronic devices, ensuring stable and reliable operation.
2. Battery Charging Systems: The voltage regulator is suitable for controlling the charging voltage in battery management systems, preventing overcharging and extending battery life.
3. Audio Amplifiers: It can provide a stable power source for audio amplifiers, minimizing noise and distortion.
4. LED Lighting: The LT3080ET#31PBF can regulate the voltage supplied to LED lighting systems, maintaining consistent brightness and prolonging LED lifespan.

Detailed and Complete Alternative Models

1. LM317: A popular adjustable voltage regulator with similar characteristics and package options.
2. LT1085: Offers higher output current capability and lower dropout voltage than the LT3080ET#31PBF.
3. LM7805: Fixed output voltage regulator with a TO-220 package, suitable for applications requiring a 5V output.

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