LM3432SQX/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: The LM3432SQX/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 - Adjustable output current - Dimming control options - Over-temperature protection - Short-circuit protection

Package: The LM3432SQX/NOPB is available in a small outline package (SOP) with 16 pins.

Essence: This IC is essential for efficiently driving high-power LEDs, ensuring optimal performance and longevity.

Packaging/Quantity: The LM3432SQX/NOPB is typically sold in reels containing 250 units.

Specifications

• Input Voltage Range: 4.5V to 75V
• Output Current Range: Up to 1.5A
• Efficiency: Up to 95%
• Dimming Control: Analog/PWM
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LM3432SQX/NOPB features the following pin configuration:

1. VIN: Input voltage
2. GND: Ground
3. VCC: Power supply for internal circuitry
4. DIM: Dimming control input
5. EN: Enable/disable control input
6. FB: Feedback voltage input
7. CS: Current sense input
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

Functional Features

• High-efficiency step-down current mode converter
• Adjustable output current through external resistor
• Dimming control using analog or PWM signals
• 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 - Adjustable output current enables flexibility in LED configurations - Dimming control options provide lighting customization - Over-temperature and short-circuit protection enhance reliability

Disadvantages: - Limited maximum output current (up to 1.5A) - Requires additional external components for operation

Working Principles

The LM3432SQX/NOPB operates as a step-down current mode converter. It regulates the output current by adjusting the duty cycle of the internal switch. The feedback voltage is compared with a reference voltage, and the error signal is used to control the switch's on/off time. This ensures a constant and accurate output current to drive the LEDs.

Detailed Application Field Plans

The LM3432SQX/NOPB is suitable for various lighting applications, including: - Street lighting - Architectural lighting - Industrial lighting - Automotive lighting - Signage lighting - Display backlighting

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the LM3432SQX/NOPB are: - LM3409 - LT3474 - TPS92550 - MAX16834

These models offer similar functionality and can be evaluated based on specific application requirements.

In conclusion, the LM3432SQX/NOPB is a high-performance LED driver IC with excellent efficiency, adjustable output current, and dimming control options. Its wide range of applications and reliable performance make it a popular choice in the lighting industry.