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LM3679URX-1.2 from NS,National Semiconductor

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LM3679URX-1.2

Manufacturer: NS

3MHz, 350mA Miniature Step-Down DC-DC Converter for Ultra Low Profile Applications (Height < 0.55mm)

Partnumber Manufacturer Quantity Availability
LM3679URX-1.2,LM3679URX12 NS 27000 In Stock

Description and Introduction

3MHz, 350mA Miniature Step-Down DC-DC Converter for Ultra Low Profile Applications (Height < 0.55mm) The LM3679URX-1.2 is a step-down DC-DC converter manufactured by Texas Instruments (NS).  

### **Specifications:**  
- **Output Voltage:** 1.2V (fixed)  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Current:** Up to 600mA  
- **Switching Frequency:** 2.25MHz (typical)  
- **Efficiency:** Up to 96%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 6-pin SOT-23 (URX)  

### **Descriptions:**  
- A high-efficiency, step-down DC-DC converter designed for low-power applications.  
- Uses a fixed-frequency PWM architecture for stable performance.  
- Includes internal soft-start and thermal shutdown protection.  

### **Features:**  
- **Low Quiescent Current:** 17µA (typical)  
- **Automatic PFM/PWM Mode Switching** for improved efficiency at light loads.  
- **Internal Synchronous Rectification** for reduced external components.  
- **Undervoltage Lockout (UVLO)** for protection against low input voltage.  
- **Short-Circuit and Overcurrent Protection.**  

This device is commonly used in portable electronics, battery-powered systems, and other space-constrained applications.

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