LD1117DT50TR

Product Overview

Category

The LD1117DT50TR belongs to the category of linear voltage regulators.

Use

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

Characteristics

• Low dropout voltage
• High output current capability
• Thermal overload protection
• Short-circuit protection

Package

The LD1117DT50TR comes in a small surface-mount package.

Essence

This voltage regulator is designed to provide a stable output voltage despite fluctuations in input voltage or load conditions.

Packaging/Quantity

The LD1117DT50TR is typically packaged in reels and is available in quantities suitable for both small-scale and large-scale production.

Specifications

• Input Voltage Range: 4.2V to 15V
• Output Voltage: 5V
• Output Current: Up to 800mA
• Dropout Voltage: 1.2V (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LD1117DT50TR has three pins:

1. Vin (Input Voltage): Connects to the input voltage source.
2. Vout (Output Voltage): Provides the regulated output voltage.
3. GND (Ground): Common reference point for the circuit.

Functional Features

• Voltage Regulation: The LD1117DT50TR maintains a constant output voltage, compensating for variations in input voltage and load conditions.
• Low Dropout: It has a low dropout voltage, minimizing power dissipation and maximizing efficiency.
• Thermal Overload Protection: The regulator includes built-in protection against excessive heat, ensuring safe operation even under high temperature conditions.
• Short-Circuit Protection: In case of a short circuit, the LD1117DT50TR automatically shuts down to prevent damage to the circuit.

Advantages and Disadvantages

Advantages

• Easy to use and integrate into electronic circuits.
• Provides stable output voltage despite input voltage fluctuations.
• Offers thermal and short-circuit protection for enhanced safety.

Disadvantages

• Limited output current capability compared to other voltage regulators.
• Requires external capacitors for stability in some applications.

Working Principles

The LD1117DT50TR is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the output voltage with a reference voltage and adjusting the pass transistor accordingly. This feedback mechanism ensures a constant output voltage, compensating for changes in input voltage and load conditions.

Detailed Application Field Plans

The LD1117DT50TR finds applications in various electronic devices and systems, including:

1. Power supplies for microcontrollers and digital circuits.
2. Battery-powered devices requiring a stable voltage source.
3. Automotive electronics, such as infotainment systems and engine control units.
4. Industrial control systems and automation equipment.
5. Consumer electronics, including audio/video equipment and portable devices.

Detailed and Complete Alternative Models

1. LM317: A popular general-purpose linear voltage regulator with adjustable output voltage.
2. LT1086: A high-current, low-dropout voltage regulator suitable for demanding applications.
3. LM7805: A widely used fixed-output voltage regulator with a 5V output.

These alternative models offer similar functionality and can be considered as substitutes for the LD1117DT50TR depending on specific requirements.

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