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LM3404HVMAX from NSC,National Semiconductor

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LM3404HVMAX

Manufacturer: NSC, NS

LM3404/04HV 1.0A Constant Current Buck Regulator for Driving High Power LEDs
Partnumber Manufacturer Quantity Availability
LM3404HVMAX NSC, NS 29483 In Stock

Description and Introduction

LM3404/04HV 1.0A Constant Current Buck Regulator for Driving High Power LEDs The LM3404HVMAX is a high-voltage step-down switching regulator manufactured by Texas Instruments (NS).  

### **Specifications:**  
- **Input Voltage Range:** 6V to 42V  
- **Output Voltage Range:** Adjustable down to 1.25V  
- **Output Current:** Up to 1A  
- **Switching Frequency:** Adjustable up to 1MHz  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 8-pin SOIC  

### **Descriptions:**  
The LM3404HVMAX is a buck (step-down) DC-DC converter designed for high-voltage applications. It integrates a high-side N-channel MOSFET and provides constant-frequency current-mode control for stable operation.  

### **Features:**  
- **Wide Input Voltage Range:** Supports 6V to 42V input  
- **Adjustable Output Voltage:** Via external resistor divider  
- **Current-Mode Control:** Ensures stable operation  
- **Thermal Shutdown Protection:** Prevents overheating  
- **Undervoltage Lockout (UVLO):** Ensures proper startup  
- **Frequency Adjustability:** Up to 1MHz for optimized efficiency  
- **Compact Package:** 8-pin SOIC for space-constrained applications  

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

Application Scenarios & Design Considerations

LM3404/04HV 1.0A Constant Current Buck Regulator for Driving High Power LEDs

Alternative Part Number

  • TPS92510DGQ --: Buck LED driver with integrated high-voltage switch, similar input range and constant-current output, suitable drop-in for LM3404HV applications.
  • HV9910BLG-G --: High-voltage constant-current LED driver with wide input range and PWM dimming, functionally comparable to LM3404HV.
  • AL8860WT --: Buck LED driver with wide input voltage and integrated switch, cost-effective alternative for similar constant-current LED applications.
  • TPS92510DGQR --: Buck LED driver with integrated high-side MOSFET and wide input voltage range, functionally similar to the LM3404HV for constant-current LED applications.
  • AL8860WT-7 --: Buck LED driver with integrated switch and wide input voltage, suitable replacement for constant-current LED driving in similar topologies.

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