0.5A Constant Current Buck Regulator for High Power LED Drivers 8-VSSOP -40 to 125 The LM3402HVMM/NOPB is a high-voltage step-down switching regulator manufactured by Texas Instruments (NS).  

### **Specifications:**  
- **Input Voltage Range:** 6V to 75V  
- **Output Voltage Range:** Adjustable down to 1.25V  
- **Output Current:** Up to 525mA  
- **Switching Frequency:** Adjustable up to 1MHz  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 8-Pin VSSOP (MSOP)  

### **Descriptions:**  
The LM3402HVMM/NOPB is a high-voltage, constant-current buck (step-down) regulator designed for driving high-power LEDs efficiently. It integrates a high-side N-channel MOSFET and provides accurate current regulation.  

### **Features:**  
- **Wide Input Voltage Range:** Supports 6V to 75V for flexible applications.  
- **Constant Current Output:** Ideal for LED driver applications.  
- **Adjustable Switching Frequency:** Up to 1MHz for optimized efficiency.  
- **Thermal Shutdown Protection:** Prevents overheating.  
- **Cycle-by-Cycle Current Limiting:** Enhances reliability.  
- **Small Footprint:** 8-pin VSSOP package for space-constrained designs.  

This regulator is commonly used in LED lighting, industrial, and automotive applications.

0.5A Constant Current Buck Regulator for High Power LED Drivers 8-VSSOP -40 to 125