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LM3406HVMH from NS,National Semiconductor

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LM3406HVMH

Manufacturer: NS

1.5A Constant Current Buck Regulator for Driving High Power LEDs
Partnumber Manufacturer Quantity Availability
LM3406HVMH NS 2031 In Stock

Description and Introduction

1.5A Constant Current Buck Regulator for Driving High Power LEDs The LM3406HVMH is a step-down DC-DC converter manufactured by Texas Instruments (NS).  

### **Specifications:**  
- **Input Voltage Range:** 6V to 42V  
- **Output Current:** Up to 1.5A  
- **Switching Frequency:** Adjustable (100kHz to 1MHz)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 16-Pin HTSSOP (PowerPAD™)  

### **Descriptions:**  
The LM3406HVMH is a constant-current buck regulator designed for driving high-power LEDs efficiently. It integrates a high-side N-channel MOSFET and supports PWM dimming for brightness control.  

### **Features:**  
- **Wide Input Voltage Range** (6V to 42V)  
- **Adjustable Output Current** (up to 1.5A)  
- **PWM Dimming Control**  
- **Thermal Shutdown Protection**  
- **Undervoltage Lockout (UVLO)**  
- **Cycle-by-Cycle Current Limiting**  
- **PowerPAD™ Package for Enhanced Thermal Performance**  

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

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 available from TI, which absorbed National Semiconductor.
  • LT3476EUHF --: Multi-channel high-current LED driver with wide input voltage range, suitable as a higher-performance substitute for constant-current LED applications.
  • MAX16832AASA+ --: High-voltage buck LED driver with integrated switch and thermal foldback, offering comparable constant-current regulation in a compact package.

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