LM2575-3.3BWM-TR

Product Overview

Category

The LM2575-3.3BWM-TR belongs to the category of voltage regulators.

Use

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

Characteristics

• Input Voltage Range: 4V to 40V
• Output Voltage: 3.3V
• Maximum Output Current: 1A
• Efficiency: Up to 92%
• Switching Frequency: 52 kHz
• Operating Temperature Range: -40°C to +125°C

Package

The LM2575-3.3BWM-TR comes in a TO-263-7 package, also known as D²PAK or DDPAK.

Essence

The essence of this product lies in its ability to efficiently convert higher input voltages into a stable 3.3V output for various electronic applications.

Packaging/Quantity

The LM2575-3.3BWM-TR is typically packaged in reels containing 250 units.

Specifications

• Input Voltage Range: 4V to 40V
• Output Voltage: 3.3V
• Output Current: Up to 1A
• Dropout Voltage: 1.2V (typical)
• Line Regulation: ±0.5% (typical)
• Load Regulation: ±0.5% (typical)
• Quiescent Current: 10mA (typical)
• Switching Frequency: 52 kHz
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM2575-3.3BWM-TR has the following pin configuration:

___________ | | IN |1 8| GND | | FB |2 7| SW | | NC |3 6| NC | | EN |4 5| VOUT |___________|

Functional Features

• Wide input voltage range allows for versatile applications.
• High efficiency ensures minimal power loss during voltage conversion.
• Internal thermal shutdown and current limit protection enhance reliability.
• Adjustable output voltage with external resistors.
• Low quiescent current enables energy-efficient operation.

Advantages

• Compact TO-263-7 package facilitates easy integration into circuit designs.
• Wide operating temperature range makes it suitable for various environments.
• Excellent line and load regulation ensure stable output voltage under different conditions.
• High efficiency reduces power dissipation and extends battery life in portable devices.

Disadvantages

• The fixed output voltage of 3.3V may not be suitable for all applications requiring different voltage levels.
• The switching frequency of 52 kHz may introduce noise in sensitive analog circuits.

Working Principles

The LM2575-3.3BWM-TR is a step-down (buck) voltage regulator that utilizes a switching converter topology. It operates by rapidly switching an internal power transistor on and off to control the average output voltage. This switching action allows for efficient voltage conversion while minimizing power dissipation.

Detailed Application Field Plans

The LM2575-3.3BWM-TR finds application in various electronic systems, including but not limited to:

1. Power supplies for microcontrollers and digital ICs.
2. Battery-powered devices requiring a stable 3.3V voltage source.
3. Automotive electronics, such as infotainment systems and lighting controls.
4. Industrial automation and control systems.
5. Portable consumer electronics, including smartphones and tablets.

Detailed and Complete Alternative Models

1. LM2596-3.3V: Similar to LM2575-3.3BWM-TR, but with a different package (TO-220) and adjustable output voltage.
2. LM317: Linear voltage regulator with adjustable output voltage, suitable for low-power applications.
3. LT1763: Low dropout (LDO) voltage regulator with fixed 3.3V output and high PSRR (power supply rejection ratio).

These alternative models offer similar functionality and can be considered based on specific design requirements.

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