3-Channel Constant Current LED Driver with Integrated Boost Controller The LM3431AQMH is a high-performance LED driver IC manufactured by ON Semiconductor (NS).  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 75V  
- **Output Current:** Up to 5A  
- **Switching Frequency:** Adjustable (100kHz to 1MHz)  
- **Efficiency:** Up to 95%  
- **Package:** 32-Lead QFN (5mm x 5mm)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Dimming Control:** Analog/PWM dimming support  
- **Protection Features:** Over-voltage, over-current, and thermal shutdown  

### **Descriptions:**  
The LM3431AQMH is a synchronous buck LED driver designed for high-power LED applications. It integrates MOSFET drivers and provides precise current regulation for driving high-brightness LEDs.  

### **Features:**  
- **Wide Input Voltage Range** (4.5V to 75V)  
- **High-Efficiency Synchronous Buck Topology**  
- **Adjustable Switching Frequency** (100kHz to 1MHz)  
- **Analog and PWM Dimming Support**  
- **Integrated MOSFET Drivers**  
- **Comprehensive Protection Circuitry** (OVP, OCP, Thermal Shutdown)  
- **Compact 32-Lead QFN Package**  

This device is suitable for automotive, industrial, and general lighting applications requiring high-efficiency LED driving.

3-Channel Constant Current LED Driver with Integrated Boost Controller