LT3081EDF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: High current, low dropout voltage, adjustable output voltage
• Package: DFN-12 (3mm x 4mm)
• Essence: Linear Technology's LT3081EDF is a high current adjustable voltage regulator designed for various applications.
• Packaging/Quantity: Available in tape and reel packaging, with 250 units per reel.

Specifications

• Input Voltage Range: 1.2V to 36V
• Output Voltage Range: 0.6V to 34.5V
• Maximum Output Current: 1.5A
• Dropout Voltage: 350mV
• Quiescent Current: 60μA
• RMS Noise: 30μVRMS
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LT3081EDF has the following pin configuration:

1. IN: Input Voltage
2. GND: Ground
3. ADJ: Adjustable Output Voltage
4. SET: External Resistor for Fixed Output Voltage
5. VOUT: Output Voltage
6. NC: No Connection
7. NC: No Connection
8. NC: No Connection
9. NC: No Connection
10. NC: No Connection
11. NC: No Connection
12. NC: No Connection

Functional Features

• High current capability allows it to handle demanding loads.
• Low dropout voltage ensures efficient regulation even with small input-output differentials.
• Adjustable output voltage provides flexibility for various applications.
• Built-in thermal shutdown and current limit protection enhance reliability and safety.
• Wide input voltage range enables compatibility with diverse power sources.

Advantages and Disadvantages

Advantages

• High current handling capability
• Low dropout voltage
• Adjustable output voltage
• Thermal shutdown and current limit protection

Disadvantages

• Limited number of available pins for additional functionality
• Relatively high quiescent current compared to some alternatives

Working Principles

The LT3081EDF is a linear voltage regulator that uses a PNP pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage, adjusting the pass transistor's resistance to maintain the desired output voltage.

Detailed Application Field Plans

The LT3081EDF can be used in various applications, including:

1. Power supplies for industrial equipment
2. Battery charging circuits
3. Automotive electronics
4. Audio amplifiers
5. LED lighting systems
6. Portable devices

Detailed and Complete Alternative Models

Some alternative models to the LT3081EDF include:

1. LM317: Adjustable voltage regulator with similar characteristics.
2. LT1084: Fixed output voltage regulator with higher current capability.
3. LM1117: Low dropout voltage regulator with adjustable or fixed output voltage options.
4. LT1763: Ultra-low dropout voltage regulator with adjustable or fixed output voltage options.

These alternative models offer different features and specifications, allowing users to choose the most suitable option for their specific requirements.

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