LM2574N-ADJG

Product Overview

Category

The LM2574N-ADJG belongs to the category of voltage regulators.

Use

It is commonly used to regulate voltage in electronic circuits.

Characteristics

• Adjustable output voltage
• High efficiency
• Wide input voltage range
• Low standby current
• Thermal shutdown protection

Package

The LM2574N-ADJG comes in a TO-263 package.

Essence

This voltage regulator is an essential component for maintaining stable and regulated voltage levels in various electronic devices.

Packaging/Quantity

The LM2574N-ADJG is typically packaged in reels, with 250 units per reel.

Specifications

• Input Voltage Range: 4.5V to 40V
• Output Voltage Range: 1.23V to 37V
• Output Current: Up to 0.5A
• Switching Frequency: 52 kHz
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LM2574N-ADJG has the following pin configuration:

1. VIN (Input Voltage)
2. GND (Ground)
3. FB (Feedback)
4. VOUT (Output Voltage)

Functional Features

• Adjustable output voltage through external resistors
• Internal oscillator for switching control
• Overcurrent protection
• Short-circuit protection
• Soft-start function to reduce inrush current

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power dissipation
• Wide input voltage range allows for versatile applications
• Thermal shutdown protection prevents damage due to overheating
• Compact size and easy integration into circuit designs

Disadvantages

• Limited output current capacity (up to 0.5A)
• Requires external components for proper operation

Working Principles

The LM2574N-ADJG operates as a step-down switching voltage regulator. It uses pulse-width modulation (PWM) to control the output voltage. The internal oscillator generates a square wave that drives the power switch, controlling the duty cycle and regulating the output voltage. By adjusting the feedback pin voltage, the desired output voltage can be set.

Detailed Application Field Plans

The LM2574N-ADJG finds applications in various fields, including:

1. Power supply circuits for microcontrollers and other digital devices
2. Battery charging circuits
3. Automotive electronics
4. Industrial automation systems
5. LED lighting applications

Detailed and Complete Alternative Models

Some alternative models to the LM2574N-ADJG include:

1. LM2596S-ADJ: Similar features with higher output current capacity
2. LM317T: Adjustable linear voltage regulator
3. LT1084CP-ADJ: High-current adjustable linear regulator
4. TPS5430-ADJ: Synchronous buck converter with adjustable output voltage

These alternative models offer different specifications and features, allowing users to choose the most suitable option for their specific requirements.

In conclusion, the LM2574N-ADJG is a versatile voltage regulator with adjustable output voltage, high efficiency, and thermal protection. Its compact size and wide input voltage range make it suitable for various applications in different fields. However, its limited output current capacity and requirement for external components should be considered when selecting this regulator for a particular project.