LT1117IST-2.85#PBF

Product Overview

Category

The LT1117IST-2.85#PBF belongs to the category of low dropout voltage regulators.

Use

It is commonly used in electronic circuits to regulate and stabilize voltage levels.

Characteristics

• Low dropout voltage: The LT1117IST-2.85#PBF has a low dropout voltage, allowing it to operate even when the input voltage is close to the desired output voltage.
• High accuracy: It provides precise voltage regulation, ensuring stable and reliable performance.
• Current limiting: The device incorporates current limiting protection to prevent damage due to excessive current flow.
• Thermal shutdown: It includes thermal shutdown protection to safeguard against overheating.

Package

The LT1117IST-2.85#PBF is available in a surface-mount SOT-223 package.

Essence

The essence of the LT1117IST-2.85#PBF is its ability to provide regulated voltage with low dropout and high accuracy.

Packaging/Quantity

The product is typically packaged in reels or tubes, containing a specific quantity per package. Please refer to the manufacturer's specifications for detailed packaging information.

Specifications

• Output Voltage: 2.85V
• Dropout Voltage: 1.2V (maximum)
• Output Current: Up to 800mA
• Input Voltage Range: 4.5V to 15V
• Line Regulation: ±0.04% (typical)
• Load Regulation: ±0.1% (typical)
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LT1117IST-2.85#PBF has three pins:

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

Functional Features

• Low dropout voltage: Allows the regulator to operate with a small voltage difference between the input and output.
• High accuracy: Provides precise and stable output voltage regulation.
• Current limiting: Protects the device from excessive current flow, preventing damage.
• Thermal shutdown: Safeguards against overheating by shutting down the device when the temperature exceeds a certain threshold.

Advantages and Disadvantages

Advantages

• Low dropout voltage enables efficient operation even with low input voltages.
• High accuracy ensures reliable performance in various applications.
• Current limiting protection prevents damage due to excessive current.
• Thermal shutdown feature protects against overheating.

Disadvantages

• Limited output current capacity of up to 800mA may not be sufficient for high-power applications.
• The SOT-223 package may require surface-mount soldering techniques.

Working Principles

The LT1117IST-2.85#PBF operates based on the principle of linear voltage regulation. It uses a pass transistor to regulate the output voltage by adjusting the resistance between the input and output terminals. By maintaining a constant voltage drop across the pass transistor, it compensates for changes in the input voltage and provides a stable output voltage.

Detailed Application Field Plans

The LT1117IST-2.85#PBF finds applications in various electronic systems, including but not limited to: - Battery-powered devices - Portable electronics - Automotive electronics - Industrial control systems - Communication equipment

Detailed and Complete Alternative Models

1. LM1117-2.85: A similar low dropout voltage regulator with a fixed output voltage of 2.85V.
2. LT1763-2.85: Another alternative with a low dropout voltage and a fixed output voltage of 2.85V.
3. ADP3339-2.85: A low dropout voltage regulator with a fixed output voltage of 2.85V and high accuracy.

These alternative models offer similar functionality and can be considered as substitutes for the LT1117IST-2.85#PBF in various applications.

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