EL7551CUZ

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: High efficiency, low dropout voltage, compact size
• Package: TO-220
• Essence: Provides stable and regulated output voltage for various electronic devices
• Packaging/Quantity: Individually packaged, quantity per package varies by manufacturer

Specifications

• Input Voltage Range: 2.5V - 18V
• Output Voltage Range: 1.2V - 15V
• Output Current: Up to 1.5A
• Dropout Voltage: 0.3V at 1A
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The EL7551CUZ has a standard TO-220 package with three pins:

1. Pin 1 (VIN): Input voltage pin.
2. Pin 2 (GND): Ground reference pin.
3. Pin 3 (VOUT): Output voltage pin.

Functional Features

• High Efficiency: The EL7551CUZ offers high efficiency, minimizing power loss during voltage regulation.
• Low Dropout Voltage: With a low dropout voltage of only 0.3V at 1A, it can maintain a stable output even when the input voltage is close to the desired output voltage.
• Compact Size: The TO-220 package allows for easy integration into various electronic devices without occupying much space.

Advantages and Disadvantages

Advantages: - High efficiency ensures minimal power loss. - Low dropout voltage enables stable output even with varying input voltages. - Compact size facilitates integration into space-constrained applications.

Disadvantages: - Limited output current of up to 1.5A may not be sufficient for high-power devices. - Higher quiescent current compared to some alternative models.

Working Principles

The EL7551CUZ is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a stable output. The dropout voltage is minimized by utilizing a low resistance pass transistor.

Detailed Application Field Plans

The EL7551CUZ can be used in various applications, including but not limited to:

1. Battery-powered devices: Provides regulated voltage for portable electronics such as smartphones, tablets, and portable gaming consoles.
2. Automotive electronics: Ensures stable power supply for automotive infotainment systems, lighting modules, and other electronic components.
3. Industrial equipment: Suitable for powering control systems, sensors, and communication modules in industrial machinery.
4. Home appliances: Enables stable voltage supply for household appliances like refrigerators, air conditioners, and washing machines.

Detailed and Complete Alternative Models

1. LM317: A popular linear voltage regulator with adjustable output voltage and higher output current capability.
2. LT1084: Offers lower dropout voltage and higher output current compared to the EL7551CUZ.
3. LM1117: Another widely used voltage regulator with fixed output voltage options and low dropout voltage.

These alternative models provide similar functionality to the EL7551CUZ but may have different specifications and package options.

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