LM2575-5.0WT

Product Overview

Category

The LM2575-5.0WT belongs to the category of voltage regulators.

Use

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

Characteristics

• Input Voltage Range: 4.75V to 40V
• Output Voltage: 5.0V
• Output Current: Up to 1A
• Efficiency: Up to 92%
• Switching Frequency: 52 kHz
• Operating Temperature Range: -40°C to +125°C

Package

The LM2575-5.0WT comes in a TO-220 package, which provides excellent thermal performance and ease of mounting.

Essence

The essence of the LM2575-5.0WT lies in its ability to efficiently convert higher input voltages into a stable 5.0V output voltage.

Packaging/Quantity

The LM2575-5.0WT is typically available in reels or tubes, with quantities varying depending on the supplier.

Specifications

• Input Voltage Range: 4.75V to 40V
• Output Voltage: 5.0V
• Output Current: Up to 1A
• Dropout Voltage: 1.2V (maximum)
• Line Regulation: ±0.5% (typical)
• Load Regulation: ±0.5% (typical)
• Ripple Rejection: 70 dB (typical)
• Shutdown Current: 80 µA (maximum)

Pin Configuration

The LM2575-5.0WT has the following pin configuration:

```

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| | --| VIN GND|-- --| VOUT FB |-- --| SW NC |-- |___________| ```

• VIN: Input voltage pin
• GND: Ground pin
• VOUT: Output voltage pin
• FB: Feedback pin
• SW: Switching pin
• NC: No connection pin

Functional Features

1. Wide Input Voltage Range: The LM2575-5.0WT can accept input voltages ranging from 4.75V to 40V, making it suitable for a wide range of applications.
2. High Efficiency: With an efficiency of up to 92%, the LM2575-5.0WT minimizes power losses and maximizes energy conversion.
3. Low Dropout Voltage: The regulator has a low dropout voltage of 1.2V, ensuring stable output even when the input voltage is close to the desired output voltage.
4. Excellent Line and Load Regulation: The LM2575-5.0WT exhibits excellent line and load regulation, maintaining a stable output voltage under varying input and load conditions.
5. Over Temperature Protection: The device incorporates thermal shutdown circuitry to protect against excessive temperature.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows for versatile applications.
• High efficiency reduces power dissipation.
• Compact TO-220 package provides good thermal performance.
• Excellent line and load regulation ensures stable output voltage.

Disadvantages

• Limited output current capability (up to 1A).
• Requires external components for proper operation.

Working Principles

The LM2575-5.0WT is a step-down switching voltage regulator. It utilizes a pulse-width modulation (PWM) control scheme to regulate the output voltage. The input voltage is chopped at a high frequency by an internal switch, and then filtered and regulated to provide a stable 5.0V output. The feedback pin monitors the output voltage and adjusts the duty cycle of the internal switch to maintain the desired output voltage.

Detailed Application Field Plans

The LM2575-5.0WT is widely used in various applications, including but not limited to: - Power supplies for microcontrollers and other digital circuits - Battery chargers - Automotive electronics - Industrial control systems - LED lighting

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the LM2575-5.0WT are: - LM2596-5.0: Similar specifications and functionality, but with a different package (TO-263). - LM317: Linear voltage regulator with adjustable output voltage. - LT1370: High-efficiency step-down switching regulator with higher output current capability.

These alternative models offer similar features and can be chosen based on specific application requirements.

In conclusion, the LM2575-5.0WT is a versatile voltage regulator with excellent efficiency, wide input voltage range, and stable output characteristics. Its compact package and reliable performance make it suitable for various electronic applications.