LT1117CST-2.85#TRPBF

Product Overview

Use

This product is commonly used in electronic circuits to regulate voltage levels and provide a stable power supply.

Characteristics

Voltage Output: 2.85V
Package Type: SOT-223
Essence: Low Dropout Linear Regulator
Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

The LT1117CST-2.85#TRPBF has the following specifications:

Input Voltage Range: 4.2V to 20V
Output Current: Up to 800mA
Dropout Voltage: 1.2V (typical)
Line Regulation: ±0.2% (typical)
Load Regulation: ±0.4% (typical)
Quiescent Current: 5mA (typical)

Detailed Pin Configuration

The LT1117CST-2.85#TRPBF has three pins:

Vin (Pin 1): Input voltage pin.
Vout (Pin 2): Output voltage pin.
GND (Pin 3): Ground pin.

Functional Features

Low dropout voltage: The LT1117CST-2.85#TRPBF can operate with a very low input-output voltage differential, ensuring efficient power conversion.
High output current capability: With a maximum output current of 800mA, this voltage regulator can handle a wide range of applications.
Excellent line and load regulation: The LT1117CST-2.85#TRPBF provides stable output voltage even with varying input voltage and load conditions.
Thermal shutdown protection: In case of excessive temperature, the regulator shuts down to prevent damage.

Advantages and Disadvantages

Advantages

Low dropout voltage ensures efficient power conversion.
High output current capability for versatile applications.
Excellent line and load regulation for stable output voltage.
Thermal shutdown protection prevents damage due to overheating.

Disadvantages

Limited output voltage options (fixed at 2.85V).
Relatively high quiescent current compared to some other regulators.

Working Principles

The LT1117CST-2.85#TRPBF is a low dropout linear regulator that uses a PNP pass transistor to regulate the output voltage. It operates by comparing the reference voltage with a fraction of the output voltage, adjusting the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

The LT1117CST-2.85#TRPBF finds applications in various electronic devices and systems, including:

Battery-powered devices: Provides a stable power supply for portable electronics such as smartphones, tablets, and portable audio players.
Automotive electronics: Used in automotive systems to regulate voltage levels for various components, including sensors, actuators, and control units.
Industrial equipment: Ensures reliable power supply for industrial automation systems, motor drives, and control circuits.
Communication systems: Used in networking equipment, routers, and modems to maintain stable voltage levels for optimal performance.

Detailed and Complete Alternative Models

Some alternative models to the LT1117CST-2.85#TRPBF include:

LM1117-2.85: A similar fixed-output voltage regulator from Texas Instruments.
ADP3339-2.85: Another low dropout linear regulator with a fixed output voltage of 2.85V from Analog Devices.
MAX6035: A precision voltage reference with adjustable output voltage from Maxim Integrated.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací LT1117CST-2.85#TRPBF v technických řešeních

Sure! Here are 10 common questions and answers related to the application of LT1117CST-2.85#TRPBF in technical solutions:

Q: What is the LT1117CST-2.85#TRPBF? A: The LT1117CST-2.85#TRPBF is a low dropout voltage linear regulator IC that provides a fixed output voltage of 2.85V.
Q: What is the input voltage range for the LT1117CST-2.85#TRPBF? A: The input voltage range for this regulator is typically between 4.3V and 15V.
Q: What is the maximum output current of the LT1117CST-2.85#TRPBF? A: The maximum output current is 800mA, which means it can supply up to 800mA of current to the load.
Q: Can I use the LT1117CST-2.85#TRPBF to regulate voltages other than 2.85V? A: No, this specific regulator is designed to provide a fixed output voltage of 2.85V. If you need a different output voltage, you should choose a different variant of the LT1117 series.
Q: Is the LT1117CST-2.85#TRPBF suitable for battery-powered applications? A: Yes, the LT1117CST-2.85#TRPBF has a low dropout voltage and low quiescent current, making it suitable for battery-powered applications where efficiency is important.
Q: Does the LT1117CST-2.85#TRPBF require any external components for operation? A: Yes, it requires a minimum of two external capacitors - an input capacitor and an output capacitor - for stability and proper operation.
Q: Can the LT1117CST-2.85#TRPBF handle high temperatures? A: Yes, the LT1117CST-2.85#TRPBF is designed to operate over a wide temperature range, typically from -40°C to 125°C.
Q: What is the dropout voltage of the LT1117CST-2.85#TRPBF? A: The dropout voltage is typically around 1.2V at full load conditions.
Q: Can I use the LT1117CST-2.85#TRPBF in parallel to increase the output current? A: No, it is not recommended to connect multiple regulators in parallel as it can lead to stability issues and uneven current sharing. Instead, consider using a higher current-rated regulator if needed.
Q: Is the LT1117CST-2.85#TRPBF suitable for automotive applications? A: Yes, the LT1117CST-2.85#TRPBF is qualified for automotive applications and meets the necessary standards and requirements.

Please note that these answers are general and may vary depending on specific application requirements and datasheet specifications.