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LM3406HVMHX from NS,National Semiconductor

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LM3406HVMHX

Manufacturer: NS

1.5A Constant Current Buck Regulator for Driving High Power LEDs

Partnumber Manufacturer Quantity Availability
LM3406HVMHX NS 25000 In Stock

Description and Introduction

1.5A Constant Current Buck Regulator for Driving High Power LEDs The LM3406HVMHX is a step-down DC-DC converter 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 (300kHz to 1MHz)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 16-Pin HTSSOP (Exposed Pad)  

### **Descriptions and Features:**  
- **Buck Regulator:** Provides a step-down voltage conversion.  
- **Adjustable Frequency:** Allows optimization for efficiency and component size.  
- **Integrated N-Channel MOSFET:** Simplifies design with an internal power switch.  
- **Current Mode Control:** Ensures stable operation and fast transient response.  
- **Programmable Soft-Start:** Reduces inrush current during startup.  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation under low input voltage conditions.  
- **Wide Input Voltage Range:** Suitable for automotive, industrial, and telecom applications.  

This device is designed for high-efficiency power conversion in demanding environments.

Application Scenarios & Design Considerations

1.5A Constant Current Buck Regulator for Driving High Power LEDs

Alternative Part Number

  • TPS92510DGQR --: Buck LED driver with integrated high-side MOSFET and wide input range, functionally similar to the LM3406 and pin-compatible in many designs.
  • LT3476EUHF --: Quad-channel high-current LED driver with wide input voltage range, suitable replacement for high-voltage LED driving applications.
  • MAX16832AASA+ --: High-voltage buck LED driver with integrated switch and thermal foldback, comparable current capability and input range.

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