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LM3406MHX/NOPB from NS,National Semiconductor

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LM3406MHX/NOPB

Manufacturer: NS

1.5A Constant Current Buck Regulator for Driving High Power LEDs 14-HTSSOP -40 to 125

Partnumber Manufacturer Quantity Availability
LM3406MHX/NOPB,LM3406MHXNOPB NS 237 In Stock

Description and Introduction

1.5A Constant Current Buck Regulator for Driving High Power LEDs 14-HTSSOP -40 to 125 The **LM3406MHX/NOPB** is a **step-down (buck) switching regulator** manufactured by **National Semiconductor (NS)**.  

### **Specifications:**  
- **Input Voltage Range:** 6V to 42V  
- **Output Voltage Range:** Adjustable down to 0.2V  
- **Output Current:** Up to 1.5A  
- **Switching Frequency:** Adjustable from 50kHz to 1MHz  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 16-Pin HTSSOP (Exposed Pad)  
- **Control Method:** Constant On-Time (COT) with Emulated Current Mode  
- **Protection Features:** Thermal shutdown, cycle-by-cycle current limiting  

### **Descriptions:**  
The **LM3406MHX/NOPB** is a **high-efficiency buck regulator** designed for driving high-power LEDs or general-purpose step-down applications. It uses **constant on-time (COT) control** for fast transient response and stable operation.  

### **Features:**  
- **Wide Input Voltage Range (6V to 42V)**  
- **Adjustable Output Voltage (as low as 0.2V)**  
- **High-Side Current Sensing**  
- **PWM Dimming Control**  
- **Thermal Shutdown Protection**  
- **Cycle-by-Cycle Current Limiting**  
- **Adjustable Switching Frequency (50kHz to 1MHz)**  
- **Low Shutdown Current (<1µA)**  

This regulator is commonly used in **LED drivers, automotive lighting, industrial power supplies, and general DC-DC conversion applications**.  

Would you like additional details on any specific aspect?

Application Scenarios & Design Considerations

1.5A Constant Current Buck Regulator for Driving High Power LEDs 14-HTSSOP -40 to 125

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