LM2575-5.0BWM-TR

Product Overview

Category

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

Use

This product is commonly used in electronic circuits to regulate voltage levels and provide a stable power supply.

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 LM2575-5.0BWM-TR is available in a TO-263-7 package, which provides excellent thermal performance and allows for easy mounting on printed circuit boards.

Essence

The essence of the LM2575-5.0BWM-TR lies in its ability to efficiently convert higher input voltages into a regulated 5.0V output, making it suitable for various applications requiring a stable power supply.

Packaging/Quantity

This product is typically packaged in reels containing 2500 units per reel.

Specifications

• Input Voltage Range: 4.75V to 40V
• Output Voltage: 5.0V
• Output Current: Up to 1A
• Quiescent Current: 10mA (typical)
• Dropout Voltage: 1.2V (typical)
• Line Regulation: ±0.5% (typical)
• Load Regulation: ±0.5% (typical)
• Switching Frequency: 52 kHz
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM2575-5.0BWM-TR has the following pin configuration:

```

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| | | 1 2 | |_____________| | | | 3 4 | |_____________| | | | 5 6 | |_____________| | | | 7 | |_____________| ```

Pin 1: Feedback (FB) - Connects to an external resistor divider network to set the output voltage. Pin 2: Ground (GND) - Connected to the ground reference of the circuit. Pin 3: Output (VOUT) - Provides the regulated 5.0V output voltage. Pin 4: Switch (SW) - Connects to the inductor and controls the switching operation. Pin 5: Compensation (COMP) - Connects to an external capacitor for stability compensation. Pin 6: Input (VIN) - Connects to the input voltage source. Pin 7: Enable (EN) - Optional pin for enabling or disabling the regulator.

Functional Features

• Wide input voltage range allows for flexibility in various applications.
• High efficiency ensures minimal power loss during voltage conversion.
• Internal thermal shutdown and current limit protection enhance reliability.
• Adjustable output voltage through an external resistor divider network.
• Low quiescent current minimizes power consumption in standby mode.
• Soft-start function prevents excessive inrush current during startup.

Advantages and Disadvantages

Advantages

• Efficient voltage regulation with high output current capability.
• Wide input voltage range enables compatibility with different power sources.
• Compact package with excellent thermal performance.
• Protection features enhance reliability and prevent damage to the circuit.
• Adjustable output voltage provides versatility in application design.

Disadvantages

• Requires external components for proper operation.
• Switching frequency may introduce electromagnetic interference (EMI) in sensitive circuits.
• Limited output current compared to some other voltage regulators.

Working Principles

The LM2575-5.0BWM-TR is a step-down switching voltage regulator that utilizes a buck converter topology. It operates by rapidly switching an internal power switch (MOSFET) on and off, controlling the energy transfer from the input to the output. This switching action allows for efficient voltage conversion while minimizing power dissipation.

When the input voltage is applied, the internal control circuitry regulates the duty cycle of the switching signal to maintain the desired 5.0V output voltage. The feedback pin (FB) is connected to an external resistor divider network, which sets the output voltage based on the desired ratio.

The regulator also incorporates protection features such as thermal shutdown and current limit to safeguard against excessive temperature and current conditions. These features enhance the reliability and longevity of the device.

Detailed Application Field Plans

The LM2575-5.0BWM-TR finds applications in various electronic systems where a stable 5.0V power supply is required. Some common application fields include:

1. Industrial Control Systems: Used to power microcontrollers, sensors, and other components in