LK112M50TR - English Editing Encyclopedia Entry

Product Overview

Category: Electronic Component
Use: Voltage Regulator
Characteristics: High precision, low dropout voltage, compact size
Package: TO-252-3 (DPAK)
Essence: Monolithic IC voltage regulator
Packaging/Quantity: Tape and reel, 2,500 units per reel

Specifications

• Input Voltage Range: 4.5V to 18V
• Output Voltage Range: 1.2V to 15V
• Dropout Voltage: 0.5V (typical)
• Output Current: 500mA
• Line Regulation: ±0.05% (typical)
• Load Regulation: ±0.1% (typical)
• Quiescent Current: 75µA (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LK112M50TR features a standard three-pin configuration:

1. Input (VIN): This pin is used to connect the input voltage source.
2. Ground (GND): This pin is connected to the ground reference.
3. Output (VOUT): The regulated output voltage is obtained from this pin.

Functional Features

• High Precision: The LK112M50TR provides excellent voltage regulation with high accuracy.
• Low Dropout Voltage: With a dropout voltage as low as 0.5V, it can maintain a stable output even when the input voltage is close to the desired output voltage.
• Compact Size: The TO-252-3 package offers a small footprint, making it suitable for space-constrained applications.

Advantages and Disadvantages

Advantages: - High precision voltage regulation - Low dropout voltage - Compact size for easy integration - Wide input voltage range

Disadvantages: - Limited output current capacity (500mA) - Requires external capacitors for stability

Working Principles

The LK112M50TR is a monolithic IC voltage regulator that utilizes a feedback control mechanism to maintain a stable output voltage. It compares the output voltage with a reference voltage and adjusts the internal circuitry to regulate the output within the specified range. The dropout voltage is minimized by employing low-resistance pass elements.

Detailed Application Field Plans

The LK112M50TR is commonly used in various electronic devices and systems, including:

1. Portable Electronics: It is suitable for battery-powered devices such as smartphones, tablets, and portable media players.
2. Automotive Applications: The regulator can be utilized in automotive electronics, providing stable voltage for sensors, actuators, and other components.
3. Industrial Control Systems: It finds applications in industrial automation, where precise voltage regulation is crucial for reliable operation.
4. Telecommunications: The LK112M50TR can be employed in telecom equipment, ensuring consistent power supply to sensitive circuitry.

Detailed and Complete Alternative Models

1. LM1117: A popular alternative with similar specifications and package options.
2. LT1763: Offers higher output current capability and lower dropout voltage.
3. TS2950: Provides a cost-effective solution with comparable performance.

Note: This list is not exhaustive, and there are several other alternatives available in the market.

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