LM3492QMHX/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: The LM3492QMHX/NOPB is a high-performance LED driver designed for driving LEDs in various lighting applications. It provides efficient and precise control of LED current, enabling optimal brightness and energy efficiency.

Characteristics: - High efficiency power conversion - Wide input voltage range - Adjustable LED current - Dimming control options - Thermal shutdown protection - Small form factor

Package: The LM3492QMHX/NOPB is available in a compact and industry-standard 16-pin TSSOP package, allowing for easy integration into existing circuit designs.

Essence: The essence of the LM3492QMHX/NOPB lies in its ability to efficiently drive LEDs, ensuring optimal performance and energy savings in lighting applications.

Packaging/Quantity: The LM3492QMHX/NOPB is typically sold in reels containing 250 units per reel.

Specifications

• Input Voltage Range: 4.5V to 75V
• Output Current Range: Up to 1A
• Switching Frequency: 200kHz to 1MHz
• Operating Temperature Range: -40°C to +125°C
• Control Interface: PWM, Analog, or I2C

Pin Configuration

The LM3492QMHX/NOPB features a 16-pin TSSOP package with the following pin configuration:

1. VIN: Input voltage
2. GND: Ground
3. VCC: Supply voltage
4. EN: Enable pin
5. DIM: Dimming control input
6. FB: Feedback pin
7. AGND: Analog ground
8. ADJ: Adjustable current reference
9. ISET: LED current set pin
10. SW: Switch node
11. SW: Switch node
12. PGND: Power ground
13. NC: No connection
14. NC: No connection
15. NC: No connection
16. NC: No connection

Functional Features

• High-efficiency step-down LED driver
• Adjustable LED current through external resistor
• Dimming control options (PWM, analog, or I2C)
• Over-temperature protection
• Under-voltage lockout
• Soft-start functionality

Advantages and Disadvantages

Advantages: - High efficiency leads to energy savings - Wide input voltage range allows for versatile applications - Multiple dimming control options provide flexibility - Compact form factor enables easy integration - Over-temperature protection ensures reliability

Disadvantages: - Limited output current range (up to 1A) - Requires external components for operation - Not suitable for high-power LED applications

Working Principles

The LM3492QMHX/NOPB operates as a step-down converter, converting the higher input voltage to a lower voltage suitable for driving LEDs. It utilizes a pulse-width modulation (PWM) control scheme to regulate the LED current. The adjustable current reference pin (ISET) allows for precise control of the LED current.

The device also incorporates various protection features such as over-temperature shutdown and under-voltage lockout to ensure safe and reliable operation.

Application Field Plans

The LM3492QMHX/NOPB is well-suited for a wide range of lighting applications, including: - Residential and commercial lighting - Automotive lighting - Industrial lighting - Signage and display lighting - Architectural lighting

Alternative Models

For those seeking alternative options, the following LED driver ICs can be considered: - LM3409: Similar features and performance, but with a higher output current capability. - LT3799: Offers additional features such as fault protection and synchronization capability. - TPS92550: Provides integrated diagnostics and fault reporting functionality.

These alternative models offer similar functionality and can be suitable replacements depending on specific application requirements.

In conclusion, the LM3492QMHX/NOPB is a high-performance LED driver IC that offers efficient and precise control of LED current. With its compact form factor, wide input voltage range, and multiple dimming control options, it is well-suited for various lighting applications. However, its limited output current range and requirement for external components may restrict its use in high-power LED applications.