LT1129IST-5#TRPBF

Product Overview

Category

LT1129IST-5#TRPBF belongs to the category of voltage regulators.

Use

This product is primarily used for regulating voltage in electronic circuits.

Characteristics

• Package: LT1129IST-5#TRPBF comes in a small surface-mount SOT-223 package.
• Essence: It is an efficient, low dropout linear regulator.
• Packaging/Quantity: The product is typically sold in reels or tubes containing a specific quantity.

Specifications

The LT1129IST-5#TRPBF has the following specifications:

• Output Voltage: 5V
• Dropout Voltage: 0.45V at 800mA
• Maximum Input Voltage: 15V
• Output Current: Up to 800mA
• Line Regulation: ±0.015%
• Load Regulation: ±0.1%
• Quiescent Current: 1.6mA

Detailed Pin Configuration

The LT1129IST-5#TRPBF has three pins:

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

Functional Features

• Low Dropout: The LT1129IST-5#TRPBF exhibits a low dropout voltage, allowing it to regulate voltage efficiently even when the input voltage is close to the desired output voltage.
• High Output Current: With a maximum output current of 800mA, this voltage regulator can handle a wide range of applications.
• Excellent Line and Load Regulation: The LT1129IST-5#TRPBF provides excellent line and load regulation, ensuring stable output voltage under varying conditions.

Advantages and Disadvantages

Advantages

• Efficient voltage regulation
• Low dropout voltage
• High output current capability
• Excellent line and load regulation

Disadvantages

• Limited input voltage range (up to 15V)
• Quiescent current may be relatively high for certain low-power applications

Working Principles

The LT1129IST-5#TRPBF 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. This allows it to maintain a stable output voltage regardless of variations in the input voltage or load conditions.

Detailed Application Field Plans

The LT1129IST-5#TRPBF finds application in various electronic devices and systems, including but not limited to:

1. Battery-powered devices: It can be used to regulate voltage in portable electronics such as smartphones, tablets, and portable audio players.
2. Industrial control systems: The voltage regulator is suitable for use in industrial control systems that require stable power supply for sensors, actuators, and other components.
3. Automotive electronics: It can be employed in automotive applications to regulate voltage for various subsystems, including infotainment systems, lighting, and sensors.

Detailed and Complete Alternative Models

Some alternative models to LT1129IST-5#TRPBF include:

1. LM1117-5.0: A popular 5V linear voltage regulator with similar characteristics.
2. LT1763-5: Another low dropout voltage regulator capable of providing a regulated 5V output.
3. ADP3339-5: A high-performance voltage regulator suitable for applications requiring precise voltage regulation.

These alternative models offer similar functionality and can be considered as substitutes depending on specific requirements.

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