LM3404HVMAX

Product Overview

Category: Integrated Circuit (IC)

Use: The LM3404HVMAX is a high-voltage buck regulator designed for driving high-power LEDs. It provides efficient and precise control of LED current in various lighting applications.

Characteristics: - High voltage input range - Wide output current range - Dimming capability - Thermal shutdown protection - Small form factor

Package: The LM3404HVMAX is available in a compact 8-pin SOIC package, which ensures ease of integration into LED lighting systems.

Essence: This IC serves as a crucial component in LED lighting systems, enabling efficient power management and accurate current regulation for optimal LED performance.

Packaging/Quantity: The LM3404HVMAX is typically sold in reels containing 250 units per reel.

Specifications

• Input Voltage Range: 6V to 75V
• Output Current Range: Up to 1.5A
• Switching Frequency: Adjustable up to 1MHz
• Dimming Control: Analog/PWM
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LM3404HVMAX features the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground reference pin
3. FB: Feedback pin for regulating LED current
4. DIM: Dimming control pin
5. EN: Enable pin for turning the device on/off
6. SW: Switch node pin for connecting the inductor
7. VCC: Supply voltage pin for internal circuitry
8. PGND: Power ground pin for switching current return path

Functional Features

• High-efficiency buck regulator for driving high-power LEDs
• Precise current regulation through feedback loop
• Adjustable dimming control for brightness adjustment
• Protection features like thermal shutdown for safe operation
• Wide input voltage range for versatile applications

Advantages and Disadvantages

Advantages: - Efficient power management for LED lighting systems - Accurate current regulation for optimal LED performance - Compact form factor for easy integration - Dimming capability for brightness control - Protection features enhance reliability

Disadvantages: - Limited output current range compared to some other models - Requires external components for complete LED driver implementation

Working Principles

The LM3404HVMAX operates as a buck regulator, converting the high input voltage to a regulated lower voltage suitable for driving LEDs. It utilizes a feedback loop to maintain a constant LED current, ensuring consistent brightness. The dimming control allows adjustment of LED brightness by modulating the duty cycle of the switching waveform. The IC incorporates protection mechanisms like thermal shutdown to prevent damage due to excessive temperature.

Detailed Application Field Plans

The LM3404HVMAX finds application in various lighting systems, including: 1. Street lighting 2. Automotive lighting 3. Industrial lighting 4. Architectural lighting 5. Signage lighting

In these applications, the LM3404HVMAX enables efficient and reliable LED driving, ensuring optimal illumination and energy efficiency.

Detailed and Complete Alternative Models

1. LM3406HVMAX: Similar to LM3404HVMAX but with higher output current capability.
2. LM3410HVMAX: Buck regulator with integrated boost converter for driving high-power LEDs.
3. LM3429HVMAX: Synchronous buck-boost LED driver with advanced dimming capabilities.

These alternative models offer different features and specifications, providing flexibility for various LED lighting applications.

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