LT3080EST

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: High precision, low dropout voltage, adjustable output voltage, current limiting, thermal shutdown
• Package: TO-220
• Essence: Linear voltage regulator
• Packaging/Quantity: Tape & Reel, 1000 units per reel

Specifications

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

Pin Configuration

The LT3080EST has the following pin configuration:

```

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| | --| ADJ/GND | --| IN | --| OUT | --| SET | |___________| ```

• ADJ/GND: Adjustable Output / Ground
• IN: Input Voltage
• OUT: Output Voltage
• SET: Set Pin for Adjusting Output Voltage

Functional Features

• High precision voltage regulation
• Low dropout voltage
• Adjustable output voltage
• Current limiting protection
• Thermal shutdown protection

Advantages and Disadvantages

Advantages

• High precision voltage regulation ensures stable output voltage.
• Low dropout voltage allows efficient operation even with small input-output differentials.
• Adjustable output voltage provides flexibility in various applications.
• Current limiting protection prevents damage due to excessive load current.
• Thermal shutdown protection prevents overheating and damage to the IC.

Disadvantages

• Limited output current capacity (up to 1.1A).
• Requires external components for proper operation.
• Relatively higher cost compared to other voltage regulators.

Working Principles

The LT3080EST is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage at the SET pin with the feedback voltage from the output. The internal circuitry adjusts the pass transistor to maintain a stable output voltage, compensating for changes in input voltage and load conditions.

Detailed Application Field Plans

The LT3080EST is widely used in various applications where precise voltage regulation is required. Some common application fields include:

1. Power supply circuits for microcontrollers and digital ICs
2. Battery charging circuits
3. Audio amplifiers and preamplifiers
4. Instrumentation and measurement equipment
5. LED lighting systems
6. Automotive electronics
7. Industrial control systems

Detailed and Complete Alternative Models

• LM317: Adjustable voltage regulator with similar features but lower output current capacity.
• LT1084: High current adjustable voltage regulator with improved thermal characteristics.
• LM1117: Low dropout voltage regulator with fixed output voltage options.

These alternative models provide different specifications and features to suit specific application requirements.

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