LM3402HVMM/NOPB

Product Overview

Category: Integrated Circuits (ICs)

Use: The LM3402HVMM/NOPB is a high-voltage, buck regulator IC designed for driving high-power LEDs. It provides efficient and precise current control for LED lighting applications.

Characteristics: - High input voltage range - Wide output current range - Adjustable switching frequency - Built-in protection features (over-temperature, over-current, and under-voltage lockout) - Small form factor

Package: The LM3402HVMM/NOPB is available in a small outline package (SOT-23) which allows for easy integration into compact LED lighting designs.

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

Packaging/Quantity: The LM3402HVMM/NOPB is typically sold in reels of 3000 units.

Specifications

• Input Voltage Range: 4.5V to 75V
• Output Current Range: Up to 1A
• Switching Frequency: Adjustable from 100kHz to 1MHz
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM3402HVMM/NOPB has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. FB: Feedback pin for current control
4. EN: Enable pin for turning the IC on/off
5. SW: Switching node pin for connecting the inductor and LED load

Functional Features

• Constant current regulation for LED drive
• Wide input voltage range for versatile applications
• Adjustable switching frequency for optimization
• Over-temperature protection to prevent damage
• Over-current protection for LED and IC safety
• Under-voltage lockout to ensure proper operation

Advantages and Disadvantages

Advantages: - High input voltage range allows for compatibility with various power sources - Efficient current control ensures optimal LED performance and longevity - Small form factor enables compact and space-saving designs - Built-in protection features enhance system reliability and safety

Disadvantages: - Limited output current range may not be suitable for high-power LED applications exceeding 1A - Non-isolated design may require additional circuitry for isolation purposes in certain applications

Working Principles

The LM3402HVMM/NOPB operates as a buck regulator, converting the higher input voltage to a lower regulated voltage required by the LED load. It utilizes pulse-width modulation (PWM) to regulate the current flowing through the LEDs. The feedback pin (FB) monitors the LED current and adjusts the duty cycle of the switching transistor to maintain a constant current.

Detailed Application Field Plans

The LM3402HVMM/NOPB is widely used in various LED lighting applications, including: - Street lighting - Automotive lighting - Industrial lighting - Architectural lighting - Signage and display lighting

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the LM3402HVMM/NOPB are: - LM3404HVMM/NOPB - LM3410HVMM/NOPB - LM3421HVMM/NOPB - LM3423HVMM/NOPB

These alternative models offer similar functionality and characteristics, providing flexibility in choosing the most suitable IC for specific LED lighting applications.

In conclusion, the LM3402HVMM/NOPB is a high-voltage buck regulator IC designed for driving high-power LEDs. Its wide input voltage range, adjustable switching frequency, and built-in protection features make it an ideal choice for various LED lighting applications.