LM3406HVQMHQ1

Product Overview

Category: Integrated Circuit (IC)

Use: The LM3406HVQMHQ1 is a high-voltage, constant current buck LED driver. It is designed to drive single or multiple series-connected LEDs efficiently and accurately.

Characteristics: - High voltage capability - Constant current output - Efficient LED driving - Wide input voltage range - Thermal shutdown protection - Low external component count

Package: The LM3406HVQMHQ1 comes in a small outline package (SOP) with 8 pins.

Essence: This IC is specifically designed for applications that require precise control of LED brightness while maintaining high efficiency.

Packaging/Quantity: The LM3406HVQMHQ1 is typically sold in reels containing 2500 units.

Specifications

• Input Voltage Range: 4.5V to 75V
• Output Current Range: Up to 1A
• Switching Frequency: Adjustable up to 2MHz
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM3406HVQMHQ1 has the following pin configuration:

1. VIN: Input voltage
2. GND: Ground
3. FB: Feedback pin for controlling the output current
4. EN: Enable pin for turning the device on/off
5. DIM: Dimming control input
6. SW: Switch node connection
7. VCC: Supply voltage for internal circuitry
8. NC: No connection

Functional Features

• Constant current regulation for accurate LED driving
• Wide input voltage range allows for versatile applications
• Adjustable switching frequency for optimization
• Dimming control for brightness adjustment
• Thermal shutdown protection prevents overheating

Advantages and Disadvantages

Advantages: - High voltage capability enables driving of multiple LEDs in series - Efficient LED driving results in reduced power consumption - Wide input voltage range allows for compatibility with various power sources - Thermal shutdown protection ensures device safety

Disadvantages: - Limited output current range may not be suitable for high-power LED applications - Requires external components for operation

Working Principles

The LM3406HVQMHQ1 operates as a buck converter, converting the higher input voltage to a lower regulated voltage required for driving LEDs. It uses a constant current control scheme to maintain accurate LED brightness. The switching frequency can be adjusted to optimize efficiency and reduce electromagnetic interference.

Detailed Application Field Plans

The LM3406HVQMHQ1 is commonly used in various lighting applications, including: - Automotive lighting - Industrial lighting - Street lighting - Signage lighting - Architectural lighting

Alternative Models

Some alternative models that offer similar functionality to the LM3406HVQMHQ1 include: - LT3474: High-voltage, constant current LED driver - TPS92550: High-voltage, buck LED driver with integrated FET - MAX16834: High-voltage, synchronous buck LED driver

These alternative models provide options for designers based on specific requirements and preferences.

Word count: 315 words