L4931CDT50-TR

Product Overview

Category

The L4931CDT50-TR belongs to the category of voltage regulators.

Use

It is commonly used to regulate voltage in electronic circuits.

Characteristics

• Low dropout voltage
• Output current up to 100 mA
• Fixed output voltage of 5.0 V
• Very low quiescent current
• Thermal shutdown and short-circuit protection

Package

The L4931CDT50-TR comes in a small surface-mount SOT-23 package.

Essence

This voltage regulator is designed to provide a stable and regulated output voltage for various electronic applications.

Packaging/Quantity

The L4931CDT50-TR is typically packaged in reels containing a quantity of 3000 units.

Specifications

• Input Voltage Range: 6.5 V to 20 V
• Output Voltage: 5.0 V
• Output Current: Up to 100 mA
• Dropout Voltage: 0.4 V (typical)
• Quiescent Current: 75 µA (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L4931CDT50-TR has three pins:

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

Functional Features

• Low dropout voltage ensures efficient regulation even with small input-output voltage differentials.
• The fixed output voltage of 5.0 V provides a stable power supply for connected devices.
• Very low quiescent current minimizes power consumption when the regulator is idle.
• Thermal shutdown and short-circuit protection safeguard the regulator and connected components from damage.

Advantages and Disadvantages

Advantages

• Small package size allows for space-efficient integration into electronic circuits.
• Low dropout voltage enables efficient regulation in low-power applications.
• Thermal shutdown and short-circuit protection enhance the reliability of the regulator.

Disadvantages

• Limited output current capability (up to 100 mA) may not be suitable for high-power applications.
• Fixed output voltage restricts flexibility in voltage selection.

Working Principles

The L4931CDT50-TR operates by comparing the output voltage with a reference voltage. It adjusts the pass transistor's resistance to maintain a constant output voltage, compensating for changes in input voltage and load conditions.

Detailed Application Field Plans

The L4931CDT50-TR is widely used in various electronic applications, including but not limited to:

1. Battery-powered devices: Provides stable voltage regulation for portable electronics such as smartphones, tablets, and digital cameras.
2. Embedded systems: Ensures reliable power supply for microcontrollers, sensors, and other components in embedded systems.
3. Automotive electronics: Regulates voltage for automotive modules, infotainment systems, and lighting applications.
4. Industrial control systems: Used in automation equipment, motor control circuits, and power supplies for industrial machinery.

Detailed and Complete Alternative Models

1. LM1117-5.0: A popular alternative with similar specifications and pin configuration.
2. MCP1700-500: Offers comparable performance and comes in various package options.
3. TS2950CT-5.0: Another alternative with low dropout voltage and fixed 5.0 V output.

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

In conclusion, the L4931CDT50-TR is a voltage regulator that provides stable and regulated output voltage for various electronic applications. Its low dropout voltage, small package size, and thermal protection make it a reliable choice for low-power devices. However, its limited output current and fixed voltage may restrict its suitability for high-power applications requiring flexibility in voltage selection.