LD1117S12TR

Product Overview

• Category: Voltage Regulator
• Use: Provides a stable output voltage for electronic circuits
• Characteristics:
  • Low dropout voltage
  • High output current capability
  • Thermal overload protection
• Package: SOT-223
• Essence: Linear voltage regulator
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.75V to 15V
• Output Voltage: 1.2V
• Output Current: Up to 800mA
• Dropout Voltage: 1.2V (typical)
• Line Regulation: ±0.2% (typical)
• Load Regulation: ±0.4% (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LD1117S12TR has three pins:

1. Input (VIN): Connects to the input voltage source.
2. Ground (GND): Connected to the ground reference.
3. Output (VOUT): Provides the regulated output voltage.

Functional Features

• Low dropout voltage ensures efficient regulation even with small input-output voltage differentials.
• High output current capability allows it to power a wide range of electronic devices.
• Thermal overload protection prevents damage due to excessive heat.

Advantages and Disadvantages

Advantages: - Low dropout voltage improves efficiency. - High output current capability enables versatile applications. - Thermal overload protection enhances reliability.

Disadvantages: - Limited output voltage options. - Not suitable for high-power applications.

Working Principles

The LD1117S12TR is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the output voltage to a reference voltage and adjusting the pass transistor accordingly. The dropout voltage is minimized by using a low resistance pass element.

Detailed Application Field Plans

The LD1117S12TR is commonly used in various electronic applications, including: - Battery-powered devices - Embedded systems - Consumer electronics - Industrial control systems - Automotive electronics

Alternative Models

1. LM1117-3.3: Provides a regulated output voltage of 3.3V.
2. LT1117-5: Offers a regulated output voltage of 5V.
3. LP2985-ADJ: Adjustable output voltage regulator with similar characteristics.

These alternative models can be considered based on specific application requirements and desired output voltages.

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