LM3409QHVMYX/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: LED Driver
• Characteristics: High Voltage, Constant Current
• Package: HVSSOP-16
• Essence: Efficient LED Lighting Control
• Packaging/Quantity: Tape & Reel, 2500 units per reel

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
• Efficiency: Up to 95%
• Dimming Control: Analog/PWM
• Protection Features: Over-Temperature, Over-Voltage, and Short-Circuit Protection

Pin Configuration

The LM3409QHVMYX/NOPB IC has the following pin configuration:

1. VIN: Input voltage
2. GND: Ground reference
3. VCC: Supply voltage for internal control circuitry
4. CS: Current sense input
5. DIM: Dimming control input
6. FB: Feedback voltage input
7. EN: Enable control input
8. AGND: Analog ground reference
9. SW: Switch node connection
10. LX: Inductor connection
11. PGND: Power ground reference
12. VDD: Output voltage supply
13. VOUT: Output voltage
14. COMP: Compensation node
15. SS: Soft-start capacitor connection
16. RT: External resistor for switching frequency control

Functional Features

• High voltage capability allows direct operation from rectified mains voltage
• Constant current output for driving LEDs with precise current regulation
• Wide input voltage range enables compatibility with various power sources
• Adjustable switching frequency for optimization of efficiency and size
• Dimming control options provide flexibility in lighting intensity adjustment
• Comprehensive protection features ensure safe operation and device longevity

Advantages and Disadvantages

Advantages: - High efficiency results in reduced power consumption and heat dissipation - Compact package allows for space-saving designs - Wide input voltage range enables versatile applications - Precise current regulation ensures consistent LED brightness - Dimming control options offer flexibility in lighting design

Disadvantages: - Limited output current capability may not be suitable for high-power LED applications - External components required for proper operation may increase system complexity

Working Principles

The LM3409QHVMYX/NOPB is a high-voltage LED driver IC that utilizes a buck topology to efficiently regulate the current flowing through LEDs. It operates by converting the input voltage to a lower, regulated output voltage while maintaining a constant current through the LEDs.

The IC incorporates a feedback loop that continuously monitors the LED current and adjusts the duty cycle of the internal switch to maintain the desired current level. This ensures consistent brightness across the LEDs, even with variations in input voltage or LED characteristics.

The dimming control feature allows the LED brightness to be adjusted by varying the duty cycle of the internal switch using either an analog or PWM signal. This provides flexibility in creating different lighting effects or adapting to ambient light conditions.

Detailed Application Field Plans

The LM3409QHVMYX/NOPB LED driver IC finds application in various lighting systems, including:

1. Residential Lighting: Enables efficient and dimmable LED lighting solutions for homes, enhancing energy savings and customization options.
2. Commercial Lighting: Provides reliable and high-performance LED drivers for office spaces, retail stores, and other commercial environments.
3. Outdoor Lighting: Facilitates the implementation of energy-efficient LED streetlights, parking lot lights, and landscape lighting.
4. Automotive Lighting: Supports the development of LED headlights, taillights, and interior lighting systems in vehicles.
5. Industrial Lighting: Enables the creation of robust and efficient LED lighting solutions for factories, warehouses, and industrial facilities.

Detailed and Complete Alternative Models

1. LM3409HV/NOPB: Similar to LM3409QHVMYX/NOPB but without the HVSSOP-16 package option.
2. LM3410XMYX/NOPB: Buck LED driver IC with similar features but optimized for lower voltage applications.
3. LM3429MYX/NOPB: Boost LED driver IC suitable for driving high-power LEDs with a wide input voltage range.

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

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