LM3429Q1MHX/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: The LM3429Q1MHX/NOPB is a high-performance LED driver IC designed for driving high-power LEDs in various lighting applications.

Characteristics: - High efficiency - Wide input voltage range - Dimming control capability - Over-temperature protection - Short-circuit protection

Package: The LM3429Q1MHX/NOPB is available in a compact and thermally enhanced PowerPAD™ package, which allows for efficient heat dissipation.

Essence: This IC is specifically designed to provide efficient and reliable power management for high-power LED lighting systems.

Packaging/Quantity: The LM3429Q1MHX/NOPB is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 4.5V to 75V
• Output Voltage Range: Up to 60V
• Maximum Output Current: 2A
• Switching Frequency: Adjustable up to 2MHz
• Dimming Control: Analog/PWM
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM3429Q1MHX/NOPB features the following pin configuration:

1. VIN: Input voltage
2. GND: Ground reference
3. VCC: Supply voltage for internal circuitry
4. CS: Current sense input
5. DIM: Dimming control input
6. SW: Switch node connection
7. LX: Inductor connection
8. PGND: Power ground

Functional Features

• High-efficiency synchronous buck LED driver
• Adaptive current regulation for accurate LED current control
• Adjustable switching frequency for optimal performance
• Analog or PWM dimming control options
• Over-temperature protection to prevent IC damage
• Short-circuit protection for LED and IC safety

Advantages and Disadvantages

Advantages: - High efficiency leads to energy savings - Wide input voltage range allows for versatile applications - Dimming control capability enables lighting customization - Over-temperature and short-circuit protection enhance reliability

Disadvantages: - Limited maximum output current (2A) - Requires external components for operation

Working Principles

The LM3429Q1MHX/NOPB operates as a synchronous buck converter, converting the input voltage to a regulated output voltage suitable for driving high-power LEDs. It utilizes adaptive current regulation to maintain accurate LED current control, ensuring consistent brightness.

The IC incorporates a switching regulator that efficiently steps down the input voltage, minimizing power losses. The switching frequency can be adjusted to optimize performance based on specific application requirements. The dimming control input allows for analog or PWM dimming of the LEDs.

To ensure safe operation, the LM3429Q1MHX/NOPB includes over-temperature protection, which shuts down the device if the temperature exceeds a certain threshold. Additionally, it features short-circuit protection to safeguard both the LEDs and the IC from potential damage.

Detailed Application Field Plans

The LM3429Q1MHX/NOPB is widely used in various lighting applications, including: - Street lighting - Architectural lighting - Automotive lighting - Industrial lighting - Signage lighting

Its high efficiency, wide input voltage range, and dimming control capability make it suitable for both indoor and outdoor lighting systems.

Alternative Models

For those seeking alternative options, the following LED driver ICs can be considered: - LM3409 - LT3799 - TPS92550

These models offer similar functionality and can be used as substitutes for the LM3429Q1MHX/NOPB in LED lighting applications.

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