SPX1117M3-L/TR

Product Overview

• Category: Voltage Regulator
• Use: Power management
• Characteristics: Low dropout, high accuracy, low quiescent current
• Package: SOT-223
• Essence: Linear voltage regulator
• Packaging/Quantity: Tape and reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.5V to 10V
• Output Voltage Range: 1.2V to 8.5V
• Output Current: Up to 1A
• Dropout Voltage: 1.1V typical at 800mA
• Quiescent Current: 5mA typical
• Line Regulation: 0.2% typical
• Load Regulation: 0.4% typical
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The SPX1117M3-L/TR has three pins:

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

Functional Features

• Low dropout voltage allows for efficient regulation even with small input-output differentials.
• High accuracy ensures precise output voltage regulation.
• Low quiescent current minimizes power consumption when the load is light.
• Overcurrent and thermal protection safeguards the device and connected circuitry.

Advantages and Disadvantages

Advantages

• Wide input voltage range enables flexibility in various applications.
• Excellent line and load regulation ensures stable output voltage.
• Compact SOT-223 package facilitates space-constrained designs.
• Overcurrent and thermal protection enhance reliability.

Disadvantages

• Limited output current capability compared to higher-rated regulators.
• Higher dropout voltage compared to some newer regulator models.

Working Principles

The SPX1117M3-L/TR is a linear voltage regulator that uses a 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. The dropout voltage is the minimum voltage required for the regulator to function properly.

Detailed Application Field Plans

The SPX1117M3-L/TR finds applications in various fields, including:

1. Consumer Electronics: Power management in portable devices, such as smartphones and tablets.
2. Industrial Automation: Voltage regulation in control systems and sensors.
3. Automotive: Power supply for automotive electronics, such as infotainment systems and lighting modules.
4. Telecommunications: Voltage regulation in networking equipment and communication devices.

Detailed and Complete Alternative Models

1. LM1117: Similar specifications and pin configuration, available in different package options.
2. LT1117: Low dropout voltage regulator with comparable characteristics.
3. ADP3339: High accuracy voltage regulator with adjustable output voltage.

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