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LM3404MAX from NSC,National Semiconductor

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LM3404MAX

Manufacturer: NSC, NS

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

Partnumber Manufacturer Quantity Availability
LM3404MAX NSC, NS 29300 In Stock

Description and Introduction

LM3404/04HV 1.0A Constant Current Buck Regulator for Driving High Power LEDs The LM3404MAX is a switching regulator manufactured by National Semiconductor (NSC). Below are its specifications, descriptions, and features based on factual information:

### **Specifications:**  
- **Input Voltage Range:** 6V to 42V  
- **Output Voltage Range:** Adjustable (via external resistors)  
- **Output Current:** Up to 500mA  
- **Switching Frequency:** Adjustable (300kHz to 1MHz)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 8-Pin SOIC  

### **Descriptions:**  
The LM3404MAX is a step-down (buck) switching regulator designed for driving high-power LEDs efficiently. It integrates a high-side N-channel MOSFET and provides constant current output for LED applications. It supports PWM dimming and thermal shutdown protection.  

### **Features:**  
- **Wide Input Voltage Range (6V–42V)**  
- **Integrated 0.5A N-Channel MOSFET**  
- **Adjustable Switching Frequency (300kHz–1MHz)**  
- **PWM Dimming Capability**  
- **Thermal Shutdown Protection**  
- **Undervoltage Lockout (UVLO)**  
- **Cycle-by-Cycle Current Limiting**  

This information is strictly based on the manufacturer's datasheet. No additional suggestions or guidance are provided.

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 switch, similar input range and current capability, pin-compatible function in many designs.
  • AL8860WT --: Constant-current buck LED driver with wide input range, suitable drop-in for LM3404 applications with minor layout changes.
  • PT4115 --: Low-cost buck LED driver with comparable current rating and dimming support, commonly used as an LM3404 substitute.

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