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LM3503SQ-25 from NS,National Semiconductor

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LM3503SQ-25

Manufacturer: NS

Dual-Display Constant Current LED Driver with Analog Brightness Control

Partnumber Manufacturer Quantity Availability
LM3503SQ-25,LM3503SQ25 NS 260 In Stock

Description and Introduction

Dual-Display Constant Current LED Driver with Analog Brightness Control The LM3503SQ-25 is a switching regulator manufactured by National Semiconductor (NS). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**
- **Output Voltage:** 2.5V (fixed)  
- **Input Voltage Range:** 4V to 35V  
- **Output Current:** Up to 3A  
- **Switching Frequency:** 500kHz (typical)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 10-pin LLP (Leadless Leadframe Package)  

### **Descriptions:**
The LM3503SQ-25 is a step-down (buck) DC-DC converter designed for high-efficiency power conversion. It integrates a high-side N-channel MOSFET and is optimized for applications requiring a fixed 2.5V output with high current capability.  

### **Features:**
- **Integrated Power MOSFET** (reduces external component count)  
- **Adjustable Soft-Start** (prevents inrush current)  
- **Cycle-by-Cycle Current Limiting** (enhances reliability)  
- **Thermal Shutdown Protection** (prevents overheating)  
- **Synchronous Rectification** (improves efficiency)  
- **Wide Input Voltage Range** (suitable for various power sources)  
- **Low Quiescent Current** (improves light-load efficiency)  

This information is based solely on the manufacturer's datasheet and specifications.

Application Scenarios & Design Considerations

Dual-Display Constant Current LED Driver with Analog Brightness Control

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