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LM3409HVMYX from NS,National Semiconductor

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LM3409HVMYX

Manufacturer: NS

PFET Buck Controller for High Power LED Drives

Partnumber Manufacturer Quantity Availability
LM3409HVMYX NS 694 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
Partnumber Manufacturer Quantity Availability
LM3409HVMYX NSNS 428 In Stock

Description and Introduction

PFET Buck Controller for High Power LED Drives The LM3409HVMYX is a step-down DC-DC switching regulator from Texas Instruments (manufacturer NSNS).  

**Specifications:**  
- **Input Voltage Range:** 6V to 75V  
- **Output Voltage Range:** Adjustable down to 1.25V  
- **Output Current:** Up to 5A  
- **Switching Frequency:** Adjustable (100kHz to 1MHz)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 14-pin HTSSOP  

**Descriptions & Features:**  
- **Constant On-Time (COT) Control:** Provides fast transient response and stable operation.  
- **Adjustable Frequency:** Allows optimization for efficiency or component size.  
- **Integrated MOSFET Driver:** Simplifies external circuitry.  
- **Adjustable Soft-Start:** Prevents inrush current issues.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation under low input voltage conditions.  
- **Thermal Shutdown:** Protects the device from overheating.  
- **Wide Input Voltage Range:** Suitable for industrial, automotive, and telecom applications.  

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

Application Scenarios & Design Considerations

PFET Buck Controller for High Power LED Drives

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