L4931CPT80-TR

Product Overview

Category

L4931CPT80-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 8.0 V
• Thermal shutdown and short-circuit protection

Package

L4931CPT80-TR comes in a small surface-mount package.

Essence

The essence of L4931CPT80-TR lies in its ability to provide a stable and regulated output voltage for various electronic applications.

Packaging/Quantity

This product is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Input Voltage Range: 4.2 V to 20 V
• Output Voltage: 8.0 V
• Dropout Voltage: 0.5 V (typical)
• Output Current: Up to 100 mA
• Quiescent Current: 120 µA (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

L4931CPT80-TR has three pins:

1. Vin (Input): This pin is connected to the input voltage source.
2. Vout (Output): The regulated output voltage is obtained from this pin.
3. GND (Ground): This pin is connected to the ground reference.

Functional Features

• Low dropout voltage ensures efficient regulation even when the input voltage is close to the desired output voltage.
• Thermal shutdown protection prevents the device from overheating under excessive load conditions.
• Short-circuit protection safeguards the regulator and the connected circuitry from damage in case of a short circuit.

Advantages and Disadvantages

Advantages

• Small form factor and surface-mount package make it suitable for space-constrained applications.
• Low quiescent current minimizes power consumption in standby mode.
• Wide input voltage range allows compatibility with various power sources.

Disadvantages

• Limited output current may not be sufficient for high-power applications.
• Fixed output voltage restricts flexibility in certain designs requiring adjustable voltages.

Working Principles

L4931CPT80-TR operates based on the principle of linear voltage regulation. It uses a pass transistor to regulate the output voltage by adjusting the resistance between the input and output terminals. The internal circuitry compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

L4931CPT80-TR finds applications in various electronic devices, including but not limited to: - Battery-powered devices - Portable audio players - Wireless communication modules - Industrial control systems - Automotive electronics

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to L4931CPT80-TR are: - LM7808: A popular 8.0 V voltage regulator with higher output current capability. - LT1084: Adjustable voltage regulator with a wide input voltage range and higher output current. - TS2950: Low dropout voltage regulator with similar characteristics and output voltage.

These alternative models provide different features and specifications, allowing designers to choose the most suitable option for their specific requirements.

In conclusion, L4931CPT80-TR is a voltage regulator with a fixed output voltage of 8.0 V. It offers low dropout voltage, thermal shutdown protection, and short-circuit protection. While it has limitations in terms of output current and adjustability, it finds applications in various electronic devices. Designers can also consider alternative models with different features and specifications based on their needs.