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LM3557SDX-2 from NS,National Semiconductor

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LM3557SDX-2

Manufacturer: NS

Step-Up Converter for White LED Applications

Partnumber Manufacturer Quantity Availability
LM3557SDX-2,LM3557SDX2 NS 17134 In Stock

Description and Introduction

Step-Up Converter for White LED Applications The LM3557SDX-2 is a product from Texas Instruments (NS stands for National Semiconductor, which was acquired by TI).  

### **Specifications:**  
- **Manufacturer:** Texas Instruments (formerly National Semiconductor)  
- **Type:** LED Driver  
- **Package:** WSON-10  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Current:** Up to 1.5A  
- **Switching Frequency:** Adjustable up to 2MHz  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The LM3557SDX-2 is a high-efficiency, dual-mode LED driver designed for camera flash and torch mode applications. It integrates a boost converter with a 1.5A current sink, providing precise current regulation for LEDs.  

### **Features:**  
- Dual-mode operation (Flash/Torch)  
- Adjustable LED current  
- Overvoltage protection (OVP)  
- Thermal shutdown protection  
- Low shutdown current (<1µA)  
- Small form factor (WSON-10 package)  

This information is based on the manufacturer's datasheet. For detailed technical parameters, refer to the official documentation.

Application Scenarios & Design Considerations

Step-Up Converter for White LED Applications

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