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LM3553SDX/NOPB from NS,National Semiconductor

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15.625ms

LM3553SDX/NOPB

Manufacturer: NS

1.2A Dual Flash LED Driver System with I2C Compatible Interface 12-WSON -30 to 85

Partnumber Manufacturer Quantity Availability
LM3553SDX/NOPB,LM3553SDXNOPB NS 10000 In Stock

Description and Introduction

1.2A Dual Flash LED Driver System with I2C Compatible Interface 12-WSON -30 to 85 The LM3553SDX/NOPB is a high-efficiency, dual white LED flash driver manufactured by Texas Instruments (NS).  

### **Specifications:**  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Current:** Up to 1.5A (total)  
- **Number of LEDs Supported:** 2 (dual LED configuration)  
- **Efficiency:** Up to 90%  
- **Switching Frequency:** Adjustable (1MHz typical)  
- **Dimming Control:** I²C interface (programmable brightness levels)  
- **Protection Features:** Thermal shutdown, overvoltage protection (OVP), LED open/short protection  
- **Package:** 10-pin WSON  

### **Descriptions:**  
The LM3553SDX/NOPB is designed for camera flash and torch mode applications in smartphones and portable devices. It integrates a high-efficiency boost converter with I²C programmable current control for precise LED brightness adjustment.  

### **Features:**  
- Dual high-current LED drivers (up to 750mA per LED)  
- Torch mode (low current) and flash mode (high current) support  
- Automatic transition between modes  
- Low shutdown current (<1µA)  
- Soft-start to reduce inrush current  
- Small form factor for space-constrained designs  

This device is optimized for fast response times and high efficiency in battery-powered applications.

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