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LM3445MMX/NOPB from NS,National Semiconductor

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LM3445MMX/NOPB

Manufacturer: NS

Triac Dimmable Offline LED Driver 10-VSSOP -40 to 125

Partnumber Manufacturer Quantity Availability
LM3445MMX/NOPB,LM3445MMXNOPB NS 2 In Stock

Description and Introduction

Triac Dimmable Offline LED Driver 10-VSSOP -40 to 125 The **LM3445MMX/NOPB** is a TRIAC dimmable offline LED driver controller manufactured by **National Semiconductor (NS)**.  

### **Specifications:**  
- **Input Voltage Range:** 80V to 270V AC  
- **Output Current:** Adjustable (external components determine current)  
- **Dimming Control:** TRIAC dimmer compatible  
- **Switching Frequency:** Adjustable (up to 1MHz)  
- **Package:** 10-pin VSSOP (MM)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Features:**  
  - Constant current LED driver  
  - Built-in bleeder circuit for TRIAC dimming  
  - Valley-fill circuit for improved efficiency  
  - Thermal shutdown protection  
  - Open LED protection  

### **Descriptions:**  
The **LM3445MMX/NOPB** is designed for offline LED lighting applications, providing a constant current output while maintaining compatibility with standard TRIAC dimmers. It integrates a bleeder circuit to ensure stable dimming performance and includes protection features for reliability.  

### **Features:**  
- TRIAC dimmer compatibility  
- Valley-fill circuit for power factor correction  
- Adjustable switching frequency  
- Thermal shutdown protection  
- Open LED protection  
- Constant current regulation  

This device is suitable for LED lighting applications requiring dimming functionality with standard AC dimmers.

Application Scenarios & Design Considerations

Triac Dimmable Offline LED Driver 10-VSSOP -40 to 125

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