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LM3543MX-H from NS,National Semiconductor

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LM3543MX-H

Manufacturer: NS

Triple Port USB Power Distribution Switch and Over-Current Protection

Partnumber Manufacturer Quantity Availability
LM3543MX-H,LM3543MXH NS 2167 In Stock

Description and Introduction

Triple Port USB Power Distribution Switch and Over-Current Protection The LM3543MX-H is a high-performance LED driver manufactured by NS (National Semiconductor). Here are its specifications, descriptions, and features:

### **Specifications:**  
- **Manufacturer:** National Semiconductor (NS)  
- **Type:** LED Driver IC  
- **Package:** SOIC-8  
- **Input Voltage Range:** 4.5V to 30V  
- **Output Current:** Up to 1.5A  
- **Switching Frequency:** Adjustable up to 2MHz  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Dimming Control:** Analog/PWM  
- **Protection Features:** Over-temperature, over-current, and open-LED protection  

### **Descriptions:**  
The LM3543MX-H is a constant-current buck LED driver designed for driving high-brightness LEDs. It integrates a high-side MOSFET and supports both analog and PWM dimming for brightness control. The device operates over a wide input voltage range, making it suitable for automotive, industrial, and general lighting applications.

### **Features:**  
- **Integrated MOSFET:** Reduces external component count.  
- **Wide Input Voltage Range:** Supports 4.5V to 30V operation.  
- **High Efficiency:** Up to 95% efficiency for power savings.  
- **Flexible Dimming Options:** Supports analog and PWM dimming.  
- **Robust Protection:** Includes thermal shutdown, over-current, and open-LED protection.  
- **Adjustable Switching Frequency:** Up to 2MHz for optimized performance.  
- **Compact SOIC-8 Package:** Space-saving design.  

This information is based on the manufacturer's datasheet. For detailed application notes, refer to the official documentation.

Application Scenarios & Design Considerations

Triple Port USB Power Distribution Switch and Over-Current Protection

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