LM2679SX-ADJ/NOPB

Product Overview

Category

The LM2679SX-ADJ/NOPB belongs to the category of voltage regulators.

Use

It is primarily used for regulating voltage in electronic circuits.

Characteristics

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

Package

The LM2679SX-ADJ/NOPB comes in a TO-263 package.

Essence

This product is essential for maintaining a stable and regulated voltage supply in various electronic devices.

Packaging/Quantity

The LM2679SX-ADJ/NOPB is typically packaged in reels and is available in quantities of 2500 units per reel.

Specifications

• Input Voltage Range: 8V to 40V
• Output Voltage Range: 1.2V to 37V
• Maximum Output Current: 3A
• Switching Frequency: 260kHz
• Dropout Voltage: 1.2V (typical)
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LM2679SX-ADJ/NOPB has the following pin configuration:

1. VIN (Input Voltage)
2. GND (Ground)
3. FB (Feedback)
4. EN (Enable)
5. SW (Switch)

Functional Features

• Adjustable output voltage through external resistors
• Overcurrent protection
• Thermal shutdown protection
• Soft-start function to reduce inrush current
• Built-in frequency compensation

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power dissipation
• Wide input voltage range allows for versatile applications
• Compact package size
• Excellent line and load regulation

Disadvantages

• Requires external components for operation
• Limited maximum output current

Working Principles

The LM2679SX-ADJ/NOPB is a step-down switching voltage regulator. It operates by converting the input voltage to a lower, regulated output voltage using a pulse-width modulation (PWM) control scheme. The internal oscillator sets the switching frequency, and the duty cycle of the switch controls the output voltage. By adjusting the feedback pin voltage, the output voltage can be precisely regulated.

Detailed Application Field Plans

The LM2679SX-ADJ/NOPB finds applications in various fields, including:

1. Power supplies for industrial equipment
2. Automotive electronics
3. Telecommunications
4. Battery-powered devices
5. LED lighting systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LM2679SX-ADJ/NOPB include:

1. LM2596S-ADJ/NOPB
2. LM317T
3. LT1084CP-ADJ
4. TPS5430DDAR
5. ADP2303ARDZ

These models provide comparable voltage regulation capabilities and can be used as alternatives depending on specific requirements.

In conclusion, the LM2679SX-ADJ/NOPB is a versatile voltage regulator with adjustable output voltage, high efficiency, and a wide input voltage range. Its compact package and excellent line and load regulation make it suitable for various applications in different industries. However, it requires external components for operation and has a limited maximum output current.