LP2950-03YZ

Product Overview

Category: Integrated Circuits (ICs)

Use: Voltage Regulator

Characteristics: - Low Dropout Voltage - Low Quiescent Current - High Output Voltage Accuracy - Thermal Shutdown Protection

Package: TO-223

Essence: The LP2950-03YZ is a voltage regulator IC that provides a fixed output voltage with low dropout voltage and high accuracy. It is commonly used in various electronic devices to regulate and stabilize the voltage supply.

Packaging/Quantity: The LP2950-03YZ is available in a TO-223 package, which is a surface-mount package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 4.75V to 30V
• Output Voltage: 3.0V
• Dropout Voltage: 0.5V (typical)
• Quiescent Current: 75µA (typical)
• Output Current: Up to 100mA
• Line Regulation: 0.04%/V (typical)
• Load Regulation: 0.1% (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LP2950-03YZ has three pins:

1. Input (IN): This pin is connected to the input voltage source.
2. Ground (GND): This pin is connected to the ground reference.
3. Output (OUT): This pin provides the regulated output voltage.

Functional Features

• Low Dropout Voltage: The LP2950-03YZ has a low dropout voltage of only 0.5V, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
• Low Quiescent Current: With a quiescent current of only 75µA, the LP2950-03YZ minimizes power consumption when in standby or idle mode.
• High Output Voltage Accuracy: The IC provides a high output voltage accuracy, ensuring a stable and precise voltage supply to the connected circuitry.
• Thermal Shutdown Protection: The LP2950-03YZ incorporates thermal shutdown protection, which prevents the IC from overheating and ensures its safe operation.

Advantages and Disadvantages

Advantages: - Low dropout voltage enables efficient regulation even with low input voltages. - Low quiescent current reduces power consumption. - High output voltage accuracy ensures stable performance of connected devices. - Thermal shutdown protection enhances safety and reliability.

Disadvantages: - Limited output current capacity (up to 100mA) may not be suitable for high-power applications. - Restricted input voltage range (4.75V to 30V) may limit compatibility with certain systems.

Working Principles

The LP2950-03YZ operates as a linear voltage regulator. It uses a pass transistor to regulate the output voltage based on the difference between the input voltage and the desired output voltage. The internal circuitry of the IC monitors the output voltage and adjusts the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

The LP2950-03YZ is widely used in various electronic devices and applications, including but not limited to: - Battery-powered devices - Portable electronics - Automotive electronics - Industrial control systems - Communication equipment

In these applications, the LP2950-03YZ ensures a stable and regulated power supply, protecting sensitive components and optimizing overall system performance.

Detailed and Complete Alternative Models

1. LM1117-3.3: This voltage regulator IC provides a fixed output voltage of 3.3V with similar characteristics to the LP2950-03YZ.
2. LT1763-3.3: Another alternative, the LT1763-3.3, is a low dropout voltage regulator with a fixed output voltage of 3.3V and high accuracy.

These alternative models offer similar functionality and can be used as substitutes for the LP2950-03YZ in various applications.

---

Word count: 511 words