LP2951-02YM-TR

Product Overview

Category

The LP2951-02YM-TR belongs to the category of voltage regulators.

Use

It is commonly used to regulate and stabilize voltage in electronic circuits.

Characteristics

• Low dropout voltage
• Low quiescent current
• Wide input voltage range
• Adjustable output voltage
• Thermal shutdown protection

Package

The LP2951-02YM-TR comes in a small outline package (SOT-23) which is suitable for surface mount applications.

Essence

This voltage regulator is designed to provide a stable output voltage even when the input voltage fluctuates.

Packaging/Quantity

The LP2951-02YM-TR is typically packaged in reels, with 3000 units per reel.

Specifications

• Input Voltage Range: 4.2V to 30V
• Output Voltage Range: 1.24V to 29V
• Dropout Voltage: 0.5V (typical)
• Quiescent Current: 75µA (typical)
• Maximum Output Current: 100mA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LP2951-02YM-TR has three pins:

1. VIN: This pin is connected to the input voltage source.
2. VOUT: The regulated output voltage is obtained from this pin.
3. GND: This pin is connected to the ground reference.

Functional Features

• Low Dropout Voltage: The LP2951-02YM-TR has a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
• Low Quiescent Current: It consumes very little current when in standby mode, making it suitable for battery-powered applications.
• Wide Input Voltage Range: The regulator can handle a wide range of input voltages, making it versatile for various applications.
• Adjustable Output Voltage: The output voltage can be adjusted using external resistors, providing flexibility in different circuit designs.
• Thermal Shutdown Protection: The LP2951-02YM-TR has built-in thermal shutdown protection to prevent damage due to excessive heat.

Advantages and Disadvantages

Advantages

• Stable and regulated output voltage
• Low dropout voltage
• Low quiescent current consumption
• Wide input voltage range
• Adjustable output voltage

Disadvantages

• Limited maximum output current (100mA)
• SOT-23 package may not be suitable for all applications

Working Principles

The LP2951-02YM-TR is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It compares the reference voltage with the feedback voltage and adjusts the pass transistor accordingly to maintain a stable output voltage. The dropout voltage is minimized by using a PNP pass transistor.

Detailed Application Field Plans

The LP2951-02YM-TR is widely used in various electronic applications, including:

1. Battery-powered devices: It is commonly used in portable electronics such as smartphones, tablets, and wearable devices to regulate the battery voltage.
2. Automotive electronics: The voltage regulator is utilized in automotive systems to provide stable power supply to various components.
3. Industrial control systems: It finds application in industrial control systems where stable and regulated voltage is crucial for proper operation.
4. Communication equipment: The LP2951-02YM-TR is used in communication devices like routers, modems, and wireless access points to ensure a consistent power supply.

Detailed and Complete Alternative Models

1. LM1117-ADJ: This adjustable voltage regulator offers similar features and performance to the LP2951-02YM-TR.
2. LT1084: A high-current, adjustable linear voltage regulator suitable for applications requiring higher output currents.
3. LM317: A popular adjustable voltage regulator with a wide input voltage range and adjustable output voltage.

These alternative models can be considered based on specific application requirements and desired performance characteristics.

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