LK112M27TR - English Editing Encyclopedia Entry

Product Overview

Category: Electronic Component
Use: Voltage Regulator
Characteristics: High precision, low dropout voltage
Package: TO-252-3 (DPAK)
Essence: Monolithic linear regulator
Packaging/Quantity: Tape and Reel / 2500 units per reel

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 1.2V to 3.6V
• Dropout Voltage: 200mV at 100mA
• Output Current: 500mA
• Line Regulation: ±0.05% typical
• Load Regulation: ±0.1% typical
• Quiescent Current: 75µA typical
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The LK112M27TR features a standard three-pin configuration:

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

Functional Features

• High precision voltage regulation for stable output.
• Low dropout voltage enables efficient power conversion.
• Excellent line and load regulation for consistent performance.
• Low quiescent current minimizes power consumption.
• Thermal shutdown protection prevents overheating.

Advantages and Disadvantages

Advantages: - High precision voltage regulation ensures accurate output. - Low dropout voltage improves efficiency. - Compact TO-252-3 package allows for easy integration. - Wide operating temperature range suits various environments.

Disadvantages: - Limited output current of 500mA may not be sufficient for high-power applications. - Requires external capacitors for stability.

Working Principles

The LK112M27TR is a monolithic linear regulator that operates by comparing the output voltage to an internal reference. It adjusts the pass transistor's resistance to maintain a stable output voltage, compensating for input voltage variations and load changes. The device utilizes a feedback loop to continuously monitor and regulate the output voltage.

Detailed Application Field Plans

The LK112M27TR finds applications in various electronic systems, including but not limited to: - Battery-powered devices - Portable consumer electronics - Industrial control systems - Automotive electronics - Medical equipment

Detailed and Complete Alternative Models

1. LM1117-3.3: Similar voltage regulator with a fixed 3.3V output.
2. LT1763-5: Low dropout voltage regulator with a 5V output.
3. ADP3339AKCZ-2.5: High precision voltage regulator with a 2.5V output.

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

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