LM3519MK-20/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: The LM3519MK-20/NOPB is a high-performance LED driver designed for driving multiple LEDs in various lighting applications. It provides efficient and precise control of LED brightness, making it suitable for use in automotive, industrial, and general lighting systems.

Characteristics: - High efficiency power conversion - Wide input voltage range - Adjustable LED current - Dimming control options - Over-temperature protection - Small form factor

Package: The LM3519MK-20/NOPB is available in a compact surface-mount package, allowing for easy integration into circuit boards and space-constrained applications.

Essence: This LED driver is an essential component in LED lighting systems as it ensures optimal performance and longevity of the LEDs by providing accurate current regulation and protection features.

Packaging/Quantity: The LM3519MK-20/NOPB is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 4.5V to 40V
• Output Current Range: Up to 1A
• Efficiency: Up to 95%
• Dimming Control: Analog/PWM
• Operating Temperature Range: -40°C to +125°C
• Package Type: PowerPAD™ MSOP-10

Pin Configuration

The LM3519MK-20/NOPB features a 10-pin PowerPAD™ MSOP package with the following pin configuration:

Pin 1: Enable (EN) Pin 2: Ground (GND) Pin 3: Feedback (FB) Pin 4: Dimming Control (DIM) Pin 5: LED Cathode (LED-) Pin 6: LED Anode (LED+) Pin 7: LED Cathode (LED-) Pin 8: LED Anode (LED+) Pin 9: Ground (GND) Pin 10: Input Voltage (VIN)

Functional Features

• High-efficiency step-up (boost) converter
• Adjustable LED current through external resistor
• Analog or PWM dimming control options
• Over-temperature protection for reliable operation
• Wide input voltage range for versatile applications

Advantages and Disadvantages

Advantages: - High efficiency results in reduced power consumption - Wide input voltage range allows for compatibility with various power sources - Precise LED current regulation ensures consistent brightness levels - Dimming control options provide flexibility in lighting applications - Over-temperature protection enhances reliability and longevity

Disadvantages: - Limited output current range may not be suitable for high-power LED applications - Requires additional external components for proper operation - Relatively small package size may pose challenges during assembly and soldering processes

Working Principles

The LM3519MK-20/NOPB operates as a step-up (boost) converter, converting the input voltage to a higher voltage required for driving LEDs. It utilizes a feedback mechanism to regulate the LED current, ensuring consistent brightness levels. The dimming control feature allows for adjusting the LED brightness using either analog or pulse-width modulation (PWM) signals.

Detailed Application Field Plans

The LM3519MK-20/NOPB finds extensive application in various fields, including:

1. Automotive Lighting:

   • Daytime running lights (DRL)
   • Headlights and taillights
   • Interior ambient lighting

2. Industrial Lighting:

   • Street lighting
   • Warehouse and factory lighting
   • Outdoor area lighting

3. General Lighting:

   • Residential and commercial lighting fixtures
   • Architectural lighting
   • Decorative lighting

Detailed and Complete Alternative Models

1. LM3409: High-efficiency LED driver with similar features and package options.
2. LT3474: Step-up LED driver with integrated power switch and dimming control.
3. TPS92550: Constant current LED driver with advanced fault protection features.

These alternative models offer comparable functionality and can be considered as substitutes for the LM3519MK-20/NOPB in specific applications.

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