LM3429MHX/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: LED Driver
• Characteristics: High Efficiency, Wide Input Voltage Range, Adjustable Output Current, Dimming Control
• Package: PowerPAD HTSSOP-20
• Essence: The LM3429MHX/NOPB is a high-performance LED driver IC designed to efficiently drive high-power LEDs in various lighting applications.
• Packaging/Quantity: Available in reels of 2500 units.

Specifications

• Input Voltage Range: 4.5V to 75V
• Output Voltage Range: Up to 60V
• Output Current Range: Up to 1.5A
• Switching Frequency: Adjustable up to 2MHz
• Dimming Control: Analog/PWM
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM3429MHX/NOPB features a 20-pin PowerPAD HTSSOP package with the following pin configuration:

1. EN/UVLO: Enable/Input Under-Voltage Lockout
2. VCC: Supply Voltage Input
3. GND: Ground
4. FB: Feedback Voltage Input
5. CS: Current Sense Input
6. DIM: Dimming Control Input
7. SW: Switch Node Connection
8. SW: Switch Node Connection
9. SW: Switch Node Connection
10. SW: Switch Node Connection
11. SW: Switch Node Connection
12. SW: Switch Node Connection
13. SW: Switch Node Connection
14. SW: Switch Node Connection
15. SW: Switch Node Connection
16. SW: Switch Node Connection
17. SW: Switch Node Connection
18. SW: Switch Node Connection
19. SW: Switch Node Connection
20. SW: Switch Node Connection

Functional Features

• High Efficiency: The LM3429MHX/NOPB utilizes a high-performance buck-boost controller to achieve efficient power conversion, minimizing energy losses.
• Wide Input Voltage Range: With an input voltage range of 4.5V to 75V, the IC can be used in a wide range of applications.
• Adjustable Output Current: The output current can be easily adjusted using external resistors, allowing flexibility in LED brightness control.
• Dimming Control: The IC supports both analog and PWM dimming control methods, enabling precise control over LED brightness levels.

Advantages and Disadvantages

Advantages: - High efficiency results in reduced power consumption and heat dissipation. - Wide input voltage range allows for versatile application possibilities. - Adjustable output current provides flexibility in LED brightness control. - Dimming control options enable precise lighting adjustments.

Disadvantages: - Limited maximum output current may not be suitable for high-power LED applications. - Complex pin configuration may require careful PCB layout design.

Working Principles

The LM3429MHX/NOPB operates as a buck-boost converter, regulating the output voltage to drive high-power LEDs efficiently. It uses a constant frequency, peak current mode control scheme to maintain stable LED current. The IC incorporates various protection features such as thermal shutdown, input under-voltage lockout, and overcurrent protection to ensure safe operation.

Application Field Plans

The LM3429MHX/NOPB is widely used in various lighting applications, including:

1. General Lighting: Indoor and outdoor lighting fixtures, streetlights, and architectural lighting.
2. Automotive Lighting: Headlights, taillights, and interior lighting.
3. Display Backlighting: LCD monitors, televisions, and signage.
4. Industrial Lighting: Warehouse lighting, high bay lighting, and factory illumination.

Alternative Models

• LM3429MH/NOPB: Similar to LM3429MHX/NOPB, but in a different package (20-pin TSSOP).
• LM3409HV/NOPB: High-voltage version of the LM3429MHX/NOPB, suitable for applications requiring higher input voltage capability.
• LM3410X/NOPB: Buck-boost LED driver IC with similar features, but optimized for lower power applications.

Note: The above alternative models are provided as examples and may not cover all available options.

This entry provides an overview of the LM3429MHX/NOPB LED driver IC, including its basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.