LP2951-4.8YM

Product Overview

Category

LP2951-4.8YM belongs to the category of voltage regulators.

Use

It is primarily used for regulating voltage in electronic circuits.

Characteristics

• Package: LP2951-4.8YM comes in a small outline package (SOT-223).
• Essence: It is a low dropout voltage regulator.
• Packaging/Quantity: The product is typically packaged in reels, with a quantity of 2500 units per reel.

Specifications

The LP2951-4.8YM voltage regulator has the following specifications:

• Output Voltage: 4.8V
• Dropout Voltage: 0.5V (maximum)
• Output Current: 100mA (maximum)
• Input Voltage Range: 7V to 20V
• Line Regulation: 0.04% (typical)
• Load Regulation: 0.2% (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LP2951-4.8YM voltage regulator has the following pin configuration:

1. GND (Ground)
2. Vout (Output Voltage)
3. Vin (Input Voltage)

Functional Features

The LP2951-4.8YM voltage regulator offers the following functional features:

• Low dropout voltage: The regulator can maintain a stable output voltage even when the input voltage is close to the desired output voltage.
• Low quiescent current: It consumes minimal current when in standby mode, making it suitable for battery-powered applications.
• Thermal shutdown protection: The regulator includes built-in thermal shutdown protection to prevent damage due to excessive heat.
• Short-circuit protection: It has built-in protection against short-circuits, ensuring the safety of the circuit and connected components.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation even with low input voltages. - Low quiescent current makes it suitable for battery-powered devices. - Thermal shutdown and short-circuit protection enhance the reliability of the regulator.

Disadvantages: - Limited output current capacity (100mA maximum). - Restricted input voltage range (7V to 20V).

Working Principles

The LP2951-4.8YM voltage regulator operates based on the principle of feedback control. It compares the output voltage with a reference voltage and adjusts the internal circuitry to maintain a stable output voltage, regardless of variations in the input voltage or load conditions. The regulator achieves this by controlling the flow of current through its internal pass transistor.

Detailed Application Field Plans

The LP2951-4.8YM voltage regulator finds applications in various electronic circuits, including but not limited to:

1. Battery-powered devices: It is commonly used in portable electronic devices such as smartphones, tablets, and handheld gaming consoles.
2. Automotive electronics: The regulator can be employed in automotive applications, providing stable voltage regulation for various components.
3. Industrial control systems: It is suitable for use in industrial control systems that require precise and reliable voltage regulation.
4. Communication equipment: The regulator can be utilized in communication devices like routers, modems, and wireless access points.

Detailed and Complete Alternative Models

Some alternative models to the LP2951-4.8YM voltage regulator include:

1. LM1117-4.8: A popular low dropout voltage regulator with similar specifications.
2. LT1763-4.8: Another high-performance voltage regulator offering low dropout voltage and higher output current capability.
3. MCP1700-4.8: A low quiescent current voltage regulator suitable for battery-powered applications.

These alternative models provide similar functionality and can be considered as substitutes depending on specific requirements.

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