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LM3409HVMYX from NS,National Semiconductor

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LM3409HVMYX

Manufacturer: NS, NSNS

PFET Buck Controller for High Power LED Drives

Partnumber Manufacturer Quantity Availability
LM3409HVMYX NS, NSNS 1122 In Stock

Description and Introduction

PFET Buck Controller for High Power LED Drives The LM3409HVMYX is a switching regulator from Texas Instruments (formerly National Semiconductor, NS). Here are its key specifications, descriptions, and features:

### **Manufacturer:**  
Texas Instruments (formerly National Semiconductor, NS)  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 75V  
- **Output Current:** Up to 5A (adjustable)  
- **Switching Frequency:** Adjustable (100kHz to 1MHz)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** HTSSOP-16 (PowerPAD™)  

### **Descriptions:**  
- The LM3409HVMYX is a **buck (step-down) switching regulator** designed for high-voltage applications.  
- It integrates a **high-side N-channel MOSFET driver** and supports **constant current (CC) or constant voltage (CV) regulation**.  
- Suitable for **LED drivers, industrial power supplies, and automotive applications**.  

### **Features:**  
- **Wide Input Voltage Range** (4.5V to 75V)  
- **Adjustable Switching Frequency** (100kHz to 1MHz)  
- **Precision Current Sensing** (supports low-side current sensing)  
- **PWM Dimming Control** for LED applications  
- **Thermal Shutdown Protection**  
- **Undervoltage Lockout (UVLO)**  
- **Cycle-by-Cycle Current Limiting**  

This information is based solely on the datasheet and manufacturer specifications.

Application Scenarios & Design Considerations

PFET Buck Controller for High Power LED Drives

Alternative Part Number

  • TPS92515HV --: Buck LED driver with integrated MOSFET and wide input voltage range, functionally similar to the LM3409HV and a common drop-in style replacement.
  • AL8860 --: High-voltage buck LED driver with external MOSFET control, suitable for similar constant-current LED applications.
  • MP2489 --: Wide-input buck LED driver controller offering comparable current regulation for LED lighting designs.
  • LT3952 --: High-voltage buck-boost LED driver controller that can replace the LM3409HV in many LED drive applications.

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