LM3404HVMRX/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: The LM3404HVMRX/NOPB is a high-voltage buck regulator designed for driving high-power LEDs. It provides efficient and reliable power conversion for various lighting applications.

Characteristics: - High voltage input range - Adjustable output current - PWM dimming control - Over-temperature protection - Under-voltage lockout

Package: The LM3404HVMRX/NOPB comes in a small outline package (SOP) with 8 pins, making it suitable for space-constrained designs.

Essence: This IC is specifically designed to deliver constant current to high-power LEDs, ensuring optimal performance and longevity of the lighting system.

Packaging/Quantity: The LM3404HVMRX/NOPB is typically sold in reels containing 2500 units per reel.

Specifications

• Input Voltage Range: 6V to 75V
• Output Current Range: Up to 1A
• Switching Frequency: 500kHz
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LM3404HVMRX/NOPB has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. FB: Feedback pin for setting the output current
4. EN: Enable pin for turning the regulator on/off
5. DIM: Dimming control pin for adjusting brightness
6. SW: Switch node connection for the internal MOSFET
7. VCC: Supply voltage pin for internal circuitry
8. VOUT: Output voltage pin

Functional Features

• Wide Input Voltage Range: The LM3404HVMRX/NOPB can handle a wide range of input voltages, making it suitable for various applications.
• Adjustable Output Current: The output current can be easily adjusted using the feedback pin, allowing flexibility in driving different LED configurations.
• PWM Dimming Control: The dimming control pin enables precise brightness adjustment through pulse-width modulation (PWM) signals.
• Over-Temperature Protection: The IC incorporates thermal shutdown protection to prevent damage from excessive heat.
• Under-Voltage Lockout: The under-voltage lockout feature ensures proper operation even when the input voltage drops below a specified threshold.

Advantages and Disadvantages

Advantages: - High efficiency power conversion - Compact package size - Wide input voltage range - Adjustable output current - PWM dimming control

Disadvantages: - Limited maximum output current (up to 1A) - Requires external components for complete circuit implementation

Working Principles

The LM3404HVMRX/NOPB operates as a buck regulator, converting the high input voltage to a lower regulated output voltage. It utilizes a pulse-width modulation (PWM) control scheme to maintain a constant current through the connected LEDs. The feedback pin allows the user to set the desired output current, while the dimming control pin enables brightness adjustment through PWM signals.

Detailed Application Field Plans

The LM3404HVMRX/NOPB is widely used in various lighting applications, including: - Street lighting - Automotive lighting - Industrial lighting - Architectural lighting - Signage lighting

Its ability to handle high input voltages and provide efficient power conversion makes it suitable for both indoor and outdoor lighting systems.

Detailed and Complete Alternative Models

1. LM3404HVMAX/NOPB: Similar to LM3404HVMRX/NOPB but with extended temperature range (-40°C to 150°C).
2. LM3404HVMYX/NOPB: Similar to LM3404HVMRX/NOPB but with a different pin configuration (exposed pad package).
3. LM3404HVMR/NOPB: Similar to LM3404HVMRX/NOPB but without the reel packaging.

These alternative models offer similar functionality and can be considered as substitutes depending on specific requirements.

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