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LM2705MF-ADJ from NATIONAL,National Semiconductor

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LM2705MF-ADJ

Manufacturer: NATIONAL

Micropower Step-up DC/DC Converter with 150mA Peak Current Limit

Partnumber Manufacturer Quantity Availability
LM2705MF-ADJ,LM2705MFADJ NATIONAL 12000 In Stock

Description and Introduction

Micropower Step-up DC/DC Converter with 150mA Peak Current Limit The **LM2705MF-ADJ** is a **step-up DC-DC converter** manufactured by **National Semiconductor** (now part of Texas Instruments).  

### **Key Specifications:**  
- **Input Voltage Range:** 2.7V to 7V  
- **Adjustable Output Voltage:** Up to **20V** (set via external resistors)  
- **Output Current:** Up to **1.5A** (switch current limit)  
- **Switching Frequency:** **600 kHz** (fixed)  
- **Efficiency:** Up to **90%**  
- **Package:** **5-Pin SOT-23** (LM2705MF-ADJ)  
- **Operating Temperature Range:** **-40°C to +125°C**  

### **Features:**  
- **Adjustable Output Voltage** (requires external feedback resistors)  
- **Integrated N-Channel MOSFET Switch** (1.5A current limit)  
- **Low Shutdown Current** (<1µA)  
- **Soft-Start Function** (reduces inrush current)  
- **Thermal Shutdown Protection**  
- **Current Mode Control** for improved stability  

### **Applications:**  
- Battery-powered devices  
- LCD bias supplies  
- Portable electronics  
- LED drivers  

This IC is designed for **compact, high-efficiency step-up conversion** in space-constrained applications.  

*(Note: National Semiconductor was acquired by Texas Instruments in 2011, but the original part number remains valid.)*

Application Scenarios & Design Considerations

Micropower Step-up DC/DC Converter with 150mA Peak Current Limit

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