LT3081ER#TRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High current, low dropout voltage regulator - Adjustable output voltage - Wide input voltage range - Thermal shutdown protection - Current limit protection

Package: TO-263-5 (D2PAK-5)

Essence: The LT3081ER#TRPBF is a high-performance voltage regulator IC designed for various applications requiring a stable and adjustable output voltage.

Packaging/Quantity: The LT3081ER#TRPBF is 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 at 1A Load
• Line Regulation: 0.015% typical
• Load Regulation: 0.1% typical
• Quiescent Current: 60μA
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LT3081ER#TRPBF has the following pin configuration:

```

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| | --| VIN VOUT |-- --| GND ADJ |-- --| CTRL NC |-- |___________| ```

• VIN: Input Voltage
• VOUT: Output Voltage
• GND: Ground
• ADJ: Adjust Pin (for setting the output voltage)
• CTRL: Control Pin (for external voltage control)
• NC: No Connection

Functional Features

• High current capability allows it to drive loads up to 1.5A.
• Low dropout voltage ensures efficient regulation even with small input-output voltage differentials.
• Adjustable output voltage provides flexibility for various applications.
• Wide input voltage range allows operation in diverse power supply systems.
• Thermal shutdown protection prevents damage due to excessive temperature.
• Current limit protection safeguards against overcurrent conditions.

Advantages and Disadvantages

Advantages: - High current capability - Adjustable output voltage - Wide input voltage range - Thermal and current limit protection

Disadvantages: - Dropout voltage may limit efficiency in low voltage applications - Requires external components for proper operation

Working Principles

The LT3081ER#TRPBF 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 obtained from the output. The control circuitry adjusts the pass transistor to maintain a stable output voltage, compensating for changes in load and input voltage.

Detailed Application Field Plans

The LT3081ER#TRPBF finds applications in various fields, including but not limited to: - Power supplies for industrial equipment - Automotive electronics - Battery-powered devices - Audio amplifiers - LED lighting systems - Test and measurement instruments

Detailed and Complete Alternative Models

Some alternative models to the LT3081ER#TRPBF include: - LM317: Adjustable voltage regulator with similar features - LT1084: Low dropout positive voltage regulator - LM1117: Low dropout voltage regulator with fixed output voltage options

These alternative models offer different specifications and package options, providing alternatives based on specific application requirements.

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