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LM3691TLX-1.8 from NS,National Semiconductor

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LM3691TLX-1.8

Manufacturer: NS

High Accuracy, Miniature 1A, Step-Down DC-DC Converter for Portable Applications

Partnumber Manufacturer Quantity Availability
LM3691TLX-1.8,LM3691TLX18 NS 21000 In Stock

Description and Introduction

High Accuracy, Miniature 1A, Step-Down DC-DC Converter for Portable Applications The LM3691TLX-1.8 is a high-efficiency, step-down DC-DC converter manufactured by Texas Instruments (NS).  

### **Specifications:**  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Voltage:** Fixed 1.8V  
- **Output Current:** Up to 1A  
- **Switching Frequency:** 2.25MHz (typical)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 6-pin DSBGA (1.5mm x 1.0mm)  
- **Control Method:** Hysteretic (no external compensation required)  
- **Low Quiescent Current:** 30µA (typical)  

### **Descriptions:**  
The LM3691TLX-1.8 is a compact, high-efficiency buck converter designed for portable applications requiring a regulated 1.8V supply. It features a fixed-frequency PWM operation and integrates synchronous rectification for improved efficiency.  

### **Features:**  
- **Fixed Output Voltage (1.8V)**  
- **High Efficiency (up to 95%)**  
- **Low Dropout Operation**  
- **Internal Soft-Start**  
- **Thermal Shutdown Protection**  
- **Undervoltage Lockout (UVLO)**  
- **Small Footprint (DSBGA Package)**  

This device is commonly used in battery-powered applications, such as smartphones, tablets, and portable electronics.

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