LM3492HCMHX/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: The LM3492HCMHX/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 LM3492HCMHX/NOPB is available in a compact and thermally enhanced HCMHX package, which ensures efficient heat dissipation.

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

Packaging/Quantity: The LM3492HCMHX/NOPB is typically sold in reels of 2500 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 LM3492HCMHX/NOPB features the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. VCC: Power supply pin
4. DIM: Dimming control pin
5. FB: Feedback pin
6. EN: Enable pin
7. SW: Switch node pin
8. LX: Inductor connection pin

Functional Features

• High-efficiency step-down converter
• Adjustable output current through external resistor
• Analog or PWM dimming control options
• Over-temperature protection prevents damage to the IC
• Short-circuit protection safeguards the LED system

Advantages and Disadvantages

Advantages: - High efficiency results in 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 system reliability

Disadvantages: - Limited maximum output current of 1.5A may not be suitable for high-power LED arrays - Requires external components for operation, increasing system complexity

Working Principles

The LM3492HCMHX/NOPB operates as a step-down converter, converting the higher input voltage to a lower voltage suitable for driving high-power LEDs. It utilizes a pulse-width modulation (PWM) control scheme to regulate the output current. The feedback pin (FB) monitors the LED current and adjusts the duty cycle accordingly. The dimming control pin (DIM) allows for analog or PWM dimming of the LEDs.

Detailed Application Field Plans

The LM3492HCMHX/NOPB is widely used in various lighting applications, including: - Indoor and outdoor LED lighting fixtures - Automotive lighting systems - Street lighting - Architectural lighting - Signage and display lighting

Detailed and Complete Alternative Models

• LM3409: Similar features and specifications, but with a different package option (HBM)
• LM3410: Lower maximum output current (1A), suitable for lower power LED applications
• LM3494: Higher maximum output current (3A), ideal for driving high-power LED arrays

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

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