LM2673SX-3.3/NOPB

Product Overview

Category

The LM2673SX-3.3/NOPB belongs to the category of voltage regulators.

Use

It is commonly used to regulate voltage in electronic circuits.

Characteristics

• Input Voltage Range: 8V to 40V
• Output Voltage: 3.3V
• Maximum Output Current: 1A
• Efficiency: Up to 92%
• Switching Frequency: 260kHz
• Operating Temperature Range: -40°C to +125°C

Package

The LM2673SX-3.3/NOPB comes in a TO-263 package.

Essence

This voltage regulator is designed to provide a stable and regulated output voltage for various electronic applications.

Packaging/Quantity

The LM2673SX-3.3/NOPB is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 8V to 40V
• Output Voltage: 3.3V
• Maximum Output Current: 1A
• Dropout Voltage: 1.2V (typical)
• Line Regulation: ±0.5% (typical)
• Load Regulation: ±0.5% (typical)
• Quiescent Current: 6mA (typical)
• Switching Frequency: 260kHz
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LM2673SX-3.3/NOPB has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. FB: Feedback pin
4. SW: Switching pin
5. VOUT: Output voltage pin

Functional Features

• Wide input voltage range allows for versatile applications.
• High efficiency ensures minimal power loss.
• Integrated overcurrent and thermal protection for enhanced safety.
• Adjustable output voltage with external resistors.
• Soft-start function prevents excessive inrush current.

Advantages

• Compact size and lightweight design.
• Wide operating temperature range allows for use in various environments.
• High efficiency results in energy savings.
• Robust protection features ensure reliability.
• Easy to integrate into existing circuits.

Disadvantages

• Limited maximum output current may not be suitable for high-power applications.
• Requires external components for proper operation.
• Switching frequency may cause electromagnetic interference in sensitive systems.

Working Principles

The LM2673SX-3.3/NOPB is a step-down switching voltage regulator. It operates by converting the input voltage to a lower, regulated output voltage using a switching transistor and an inductor. The integrated control circuitry adjusts the duty cycle of the switching transistor to maintain the desired output voltage.

Detailed Application Field Plans

The LM2673SX-3.3/NOPB can be used in various applications, including:

1. Power supplies for microcontrollers and other digital ICs.
2. Battery-powered devices requiring stable voltage regulation.
3. Automotive electronics.
4. Industrial control systems.
5. LED lighting applications.

Detailed and Complete Alternative Models

Some alternative models that provide similar functionality to the LM2673SX-3.3/NOPB include:

1. LM2596S-ADJ: Adjustable output voltage, 3A maximum output current.
2. LM317T: Adjustable output voltage, up to 1.5A maximum output current.
3. LM7805: Fixed 5V output voltage, up to 1A maximum output current.
4. LT1084CP-3.3: Adjustable output voltage, up to 5A maximum output current.

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

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