LM2575-3.3YWM-TR

Product Overview

Category

The LM2575-3.3YWM-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: 4.75V 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 LM2575-3.3YWM-TR is available in a TO-263-7 package, which provides excellent thermal performance and allows for easy mounting on PCBs.

Essence

The essence of the LM2575-3.3YWM-TR lies in its ability to efficiently convert higher input voltages into a stable 3.3V output voltage, making it suitable for various applications.

Packaging/Quantity

This product is typically packaged in reels, with 2,500 units per reel.

Specifications

• Input Voltage Range: 4.75V to 40V
• Output Voltage: 3.3V
• Output Current: Up to 1A
• Dropout Voltage: 1.3V (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

Detailed Pin Configuration

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

1. VIN (Input Voltage)
2. GND (Ground)
3. FB (Feedback)
4. VOUT (Output Voltage)
5. ON/OFF (Enable/Disable)
6. NC (No Connection)
7. VIN (Input Voltage)

Functional Features

• Wide input voltage range allows for versatile applications.
• High efficiency ensures minimal power loss during voltage conversion.
• Built-in over-temperature and over-current protection enhances reliability.
• Adjustable output voltage with external resistors.
• Enable/disable pin for easy control of the regulator.

Advantages

• Compact TO-263-7 package provides excellent thermal performance.
• High efficiency results in reduced power dissipation.
• Wide input voltage range makes it suitable for various applications.
• Over-temperature and over-current protection enhance system reliability.
• Adjustable output voltage allows for flexibility in design.

Disadvantages

• The switching frequency of 52 kHz may introduce some noise in sensitive applications.
• Requires external components for proper operation, increasing overall system complexity.

Working Principles

The LM2575-3.3YWM-TR 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 first stepped down by an internal switch and then filtered to provide a stable 3.3V 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 LM2575-3.3YWM-TR finds applications in various fields, including:

1. Power supply modules for microcontrollers and digital circuits.
2. Battery-powered devices requiring a stable 3.3V voltage source.
3. Automotive electronics, such as infotainment systems and dashboard displays.
4. Industrial automation systems, where reliable voltage regulation is crucial.
5. Communication equipment, such as routers and switches.

Detailed and Complete Alternative Models

1. LM2596-3.3V: Similar to LM2575-3.3YWM-TR, but with a different package and pin configuration.
2. LM317: Linear voltage regulator with adjustable output voltage.
3. LT1084: High-current linear voltage regulator with adjustable output voltage.
4. TPS5430: Switching voltage regulator with adjustable output voltage and higher current capability.

These alternative models provide similar functionality and can be considered as substitutes for the LM2575-3.3YWM-TR in specific applications.

In conclusion, the LM2575-3.3YWM-TR is a versatile voltage regulator that efficiently converts higher input voltages into a stable 3.3V output. With its wide input voltage range, high efficiency, and built-in protection features, it finds applications in various fields, including power supply modules, automotive electronics, and communication equipment. While it has some disadvantages, such as switching noise and external component requirements, there are alternative models available to suit specific application requirements.