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LM3404HVMR
Product Overview
Category: Integrated Circuit (IC)
Use: The LM3404HVMR is a high-voltage buck regulator designed for driving high-power LEDs. It provides efficient and precise control of LED current, making it suitable for various lighting applications.
Characteristics: - High voltage input range - Adjustable output current - PWM dimming capability - Over-temperature protection - Under-voltage lockout
Package: The LM3404HVMR is available in a small outline package (SOP) with 8 pins.
Essence: This IC is specifically designed to drive high-power LEDs efficiently and reliably, ensuring optimal performance and longevity of the LED lighting system.
Packaging/Quantity: The LM3404HVMR is typically sold in reels containing 250 units per reel.
Specifications
- Input Voltage Range: 6V to 75V
- Output Current Range: Up to 1A
- Switching Frequency: 200kHz to 1MHz
- Operating Temperature Range: -40°C to +125°C
Pin Configuration
The LM3404HVMR has the following pin configuration:
```
| | --| VIN GND|-- --| EN FB |-- --| SW NC |-- |___________| ```
- VIN: Input voltage pin
- EN: Enable pin for turning the regulator on/off
- FB: Feedback pin for setting the desired output current
- SW: Switch pin for connecting the inductor and LED load
Functional Features
- Wide input voltage range allows compatibility with various power sources.
- Adjustable output current enables precise control of LED brightness.
- PWM dimming capability allows for flexible brightness adjustment.
- Over-temperature protection ensures safe operation under high temperature conditions.
- Under-voltage lockout prevents the regulator from operating below a certain voltage threshold.
Advantages and Disadvantages
Advantages: - High efficiency in driving high-power LEDs - Wide input voltage range for versatile applications - Precise current control for optimal LED performance - PWM dimming capability for flexible brightness adjustment
Disadvantages: - Limited output current range (up to 1A) - Requires external components for operation
Working Principles
The LM3404HVMR operates as a buck regulator, converting a higher input voltage to a lower output voltage required for driving high-power LEDs. It uses a switching mechanism to efficiently regulate the LED current. The feedback pin (FB) is used to set the desired output current, while the enable pin (EN) controls the on/off state of the regulator.
Detailed Application Field Plans
The LM3404HVMR is commonly used in various lighting applications, including: - Street lighting - Automotive lighting - Industrial lighting - Architectural lighting - Signage lighting
Detailed and Complete Alternative Models
- LM3404: Similar to LM3404HVMR but with a lower input voltage range.
- LM3406: Higher output current version of LM3404HVMR.
- LM3410: Buck regulator with integrated Schottky diode for simplified design.
These alternative models offer similar functionality and can be considered based on specific application requirements.
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Liệt kê 10 câu hỏi và câu trả lời thường gặp liên quan đến ứng dụng LM3404HVMR trong giải pháp kỹ thuật
Sure! Here are 10 common questions and answers related to the application of LM3404HVMR in technical solutions:
Q: What is LM3404HVMR? A: LM3404HVMR is a high-voltage, buck regulator integrated circuit (IC) designed for driving high-power LEDs.
Q: What is the input voltage range of LM3404HVMR? A: The input voltage range of LM3404HVMR is typically between 6V and 75V.
Q: What is the output current capability of LM3404HVMR? A: LM3404HVMR can deliver up to 1A of continuous output current.
Q: Can LM3404HVMR be used for dimming LED lights? A: Yes, LM3404HVMR supports analog dimming control using a PWM signal.
Q: Is LM3404HVMR suitable for automotive lighting applications? A: Yes, LM3404HVMR is designed to meet the requirements of automotive lighting systems.
Q: Does LM3404HVMR have built-in protection features? A: Yes, LM3404HVMR includes features like thermal shutdown, overvoltage protection, and overcurrent protection.
Q: Can LM3404HVMR operate in a wide temperature range? A: Yes, LM3404HVMR is specified to operate from -40°C to +125°C.
Q: How efficient is LM3404HVMR in converting input power to LED output? A: LM3404HVMR has a high efficiency of up to 95% when properly configured.
Q: Can LM3404HVMR be used in both constant current and constant voltage applications? A: Yes, LM3404HVMR can be configured for either constant current or constant voltage operation.
Q: Are there any application notes or reference designs available for LM3404HVMR? A: Yes, Texas Instruments provides application notes and reference designs to help users implement LM3404HVMR in various lighting applications.
Please note that the answers provided here are general and may vary depending on specific design considerations and requirements. It is always recommended to refer to the LM3404HVMR datasheet and relevant technical documentation for accurate information.