L4931CZ50

Product Overview

• Category: Voltage Regulator
• Use: To regulate and stabilize the output voltage in electronic circuits
• Characteristics: Low dropout voltage, high output current capability, thermal shutdown protection
• Package: TO-92 (Through-Hole)
• Essence: Linear voltage regulator
• Packaging/Quantity: Available in tape and reel packaging, quantity varies depending on supplier

Specifications

• Input Voltage Range: 4.75V to 20V
• Output Voltage: 5V
• Output Current: Up to 250mA
• Dropout Voltage: 0.6V typical at 250mA load
• Line Regulation: ±0.2% typical
• Load Regulation: ±0.4% typical
• Quiescent Current: 5mA typical
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L4931CZ50 has three pins:

1. Input (IN): Connects to the input voltage source.
2. Ground (GND): Connected to the ground reference of the circuit.
3. Output (OUT): Provides the regulated output voltage.

Functional Features

• Low dropout voltage allows for efficient regulation even with small input-output voltage differentials.
• High output current capability enables the device to power a wide range of electronic components.
• Thermal shutdown protection prevents damage due to excessive temperature.

Advantages

• Simple and easy to use.
• Provides stable and regulated output voltage.
• Suitable for low-power applications.
• Compact and cost-effective solution.

Disadvantages

• Limited output current compared to other voltage regulators.
• Dropout voltage may affect efficiency in certain applications.
• Requires external capacitors for stability.

Working Principles

The L4931CZ50 is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage and adjusting the pass transistor accordingly. This feedback loop ensures that the output voltage remains constant despite variations in the input voltage or load conditions.

Detailed Application Field Plans

The L4931CZ50 is commonly used in various electronic devices and applications, including:

1. Battery-powered devices: Provides stable voltage for microcontrollers, sensors, and other low-power components.
2. Automotive electronics: Regulates voltage for audio systems, lighting controls, and other automotive accessories.
3. Industrial control systems: Ensures consistent power supply for sensors, actuators, and control circuits.
4. Consumer electronics: Used in portable devices, such as smartphones, tablets, and digital cameras.

Detailed and Complete Alternative Models

• LM317: Adjustable voltage regulator with higher output current capability.
• LM7805: Fixed 5V voltage regulator with higher output current capability.
• LT1086: Adjustable voltage regulator with lower dropout voltage.

Note: This is not an exhaustive list, and there are many other alternative models available in the market.

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