LM3409N/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: The LM3409N/NOPB is a high-performance LED driver IC designed for driving LEDs in lighting applications. It provides a constant current output to ensure efficient and reliable operation of the LEDs.

Characteristics: - High efficiency - Wide input voltage range - Adjustable output current - Dimming control options - Over-temperature protection - Under-voltage lockout

Package: The LM3409N/NOPB is available in a 16-pin DIP (Dual In-line Package) or SOIC (Small Outline Integrated Circuit) package.

Essence: The LM3409N/NOPB is an essential component in LED lighting systems, enabling precise control and efficient operation of LEDs.

Packaging/Quantity: The LM3409N/NOPB is typically sold in reels or tubes, with quantities varying depending on the supplier.

Specifications

• Input Voltage Range: 4.5V to 75V
• Output Current Range: Up to 1.5A
• Switching Frequency: Up to 1MHz
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM3409N/NOPB has 16 pins, each serving a specific function. The pin configuration is as follows:

1. VCC - Power supply voltage input
2. GND - Ground reference
3. FB - Feedback pin for controlling the output current
4. EN/UVLO - Enable/Under-voltage lockout pin
5. DIM - Dimming control input
6. NC - No connection
7. NC - No connection
8. NC - No connection
9. NC - No connection
10. SW - Switch node for connecting the inductor and LED load
11. SW - Switch node for connecting the inductor and LED load
12. NC - No connection
13. NC - No connection
14. NC - No connection
15. NC - No connection
16. VCC - Power supply voltage input

Functional Features

• Constant current output for precise LED driving
• Wide input voltage range allows for versatile applications
• Adjustable output current to accommodate different LED configurations
• Dimming control options for brightness adjustment
• Over-temperature protection ensures safe operation
• Under-voltage lockout prevents damage during low voltage conditions

Advantages and Disadvantages

Advantages: - High efficiency leads to energy savings - Wide input voltage range enables compatibility with various power sources - Adjustable output current provides flexibility for different LED setups - Dimming control options allow for customized lighting effects - Over-temperature protection ensures long-term reliability - Under-voltage lockout protects against power supply issues

Disadvantages: - Limited maximum output current may not be suitable for high-power LED applications - Complex pin configuration may require careful attention during circuit design

Working Principles

The LM3409N/NOPB operates as a constant current LED driver by regulating the output current based on the feedback received from the FB pin. It utilizes a switching regulator topology to efficiently convert the input voltage to the desired current for the LEDs. The dimming control input (DIM) allows for adjusting the brightness of the LEDs, while the under-voltage lockout (UVLO) feature ensures safe operation during low voltage conditions.

Detailed Application Field Plans

The LM3409N/NOPB is widely used in various lighting applications, including: - Residential and commercial lighting - Automotive lighting - Industrial lighting - Street lighting - Signage and display lighting

Its versatility, efficiency, and adjustable features make it suitable for a wide range of LED lighting systems.

Detailed and Complete Alternative Models

• LM3409HV/NOPB: High-voltage version of the LM3409N/NOPB, suitable for applications with higher input voltage requirements.
• LM3409MY/NOPB: Smaller package variant of the LM3409N/NOPB, ideal for space-constrained designs.
• LM3410X/NOPB: Similar functionality to the LM3409N/NOPB, but with additional features such as fault protection and synchronization capabilities.

These alternative models offer similar performance and functionality, providing options for different design requirements.

In conclusion, the LM3409N/NOPB is a versatile LED driver IC that offers high efficiency, adjustable output current, and dimming control options. Its wide range of applications, along with alternative models, make it a popular choice in the LED lighting industry.