LM3423Q1MH/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: LED Driver

Characteristics: - High efficiency - Wide input voltage range - Dimming control capabilities - Thermal shutdown protection - Overvoltage protection

Package: QFN (Quad Flat No-leads)

Essence: The LM3423Q1MH/NOPB is a high-efficiency LED driver IC designed for driving LEDs in general lighting applications.

Packaging/Quantity: The LM3423Q1MH/NOPB is available in a QFN package and is typically sold in reels of 2500 units.

Specifications

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

Detailed Pin Configuration

The LM3423Q1MH/NOPB has the following pin configuration:

1. VIN: Input voltage
2. GND: Ground
3. DIM: Dimming control input
4. FB: Feedback voltage input
5. EN: Enable control input
6. SW: Switch node connection
7. VCC: Supply voltage for internal circuitry
8. PGND: Power ground

Functional Features

• High-efficiency operation reduces power dissipation.
• Wide input voltage range allows for versatile applications.
• Dimming control capability enables brightness adjustment.
• Thermal shutdown protection prevents overheating.
• Overvoltage protection safeguards against excessive voltage levels.

Advantages and Disadvantages

Advantages: - High efficiency leads to energy savings. - Wide input voltage range accommodates various power sources. - Dimming control provides flexibility in lighting applications. - Thermal shutdown and overvoltage protection enhance reliability.

Disadvantages: - Limited output current range may not be suitable for high-power LED applications. - QFN package may require specialized assembly techniques.

Working Principles

The LM3423Q1MH/NOPB is a buck LED driver IC that converts the input voltage to a regulated current source for driving LEDs. It utilizes a high-frequency switching regulator to efficiently control the LED current. The dimming control input allows for adjusting the brightness of the LEDs, while the thermal shutdown and overvoltage protection features ensure safe operation.

Detailed Application Field Plans

The LM3423Q1MH/NOPB is commonly used in various lighting applications, including: - Residential lighting - Commercial lighting - Industrial lighting - Automotive lighting - Outdoor lighting

Detailed and Complete Alternative Models

Some alternative models to the LM3423Q1MH/NOPB include: - LM3409HV/NOPB - LM3414HVMR/NOPB - LM3429Q1MH/NOPB - LM3445MM/NOPB - LM3492HVMRX/NOPB

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

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