Constant Current N-Channel Controller with Thermal Foldback for Driving LEDs The LM3424QMH is a high-voltage N-channel controller designed for LED driver applications, manufactured by Texas Instruments (NS).  

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

### **Descriptions:**  
The LM3424QMH is a versatile LED driver controller that supports buck, boost, buck-boost, and SEPIC topologies. It integrates a high-side N-channel MOSFET driver for efficient power conversion and includes features for accurate LED current regulation.  

### **Features:**  
- **PWM Dimming Control**  
- **Analog Dimming Support**  
- **Thermal Foldback Protection**  
- **Undervoltage Lockout (UVLO)**  
- **Adjustable Soft-Start**  
- **Cycle-by-Cycle Current Limiting**  
- **Open-LED Protection**  

This device is commonly used in automotive, industrial, and general lighting applications requiring high-efficiency LED driving solutions.

Constant Current N-Channel Controller with Thermal Foldback for Driving LEDs