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LM3940IMPX-3.3 from NS,National Semiconductor

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LM3940IMPX-3.3

Manufacturer: NS

IA Low Dropout Regulator for 5V to 3.3V Conversion

Partnumber Manufacturer Quantity Availability
LM3940IMPX-3.3,LM3940IMPX33 NS 4000 In Stock

Description and Introduction

IA Low Dropout Regulator for 5V to 3.3V Conversion The LM3940IMPX-3.3 is a 1A low-dropout voltage regulator manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Output Voltage:** 3.3V (fixed)  
- **Output Current:** 1A  
- **Dropout Voltage:** 0.5V (typical) at full load  
- **Input Voltage Range:** Up to 20V  
- **Line Regulation:** 0.04% (typical)  
- **Load Regulation:** 0.1% (typical)  
- **Quiescent Current:** 10mA (typical)  
- **Package:** TO-252 (DPAK)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Protection Features:** Thermal shutdown, current limit  

### **Descriptions:**  
The LM3940 is a high-performance, low-dropout regulator designed for applications requiring stable 3.3V power. It is optimized for low-voltage operation and provides high efficiency with minimal power dissipation.  

### **Features:**  
- **Low Dropout Voltage:** Ensures stable output even when input voltage is close to the output.  
- **High Accuracy:** Tight voltage regulation for precision applications.  
- **Thermal Protection:** Prevents damage from overheating.  
- **Current Limiting:** Protects against excessive load currents.  
- **Wide Input Range:** Supports up to 20V input.  
- **Compact Package:** TO-252 (DPAK) for space-constrained designs.  

This regulator is commonly used in battery-powered devices, embedded systems, and other applications requiring reliable 3.3V power.

Application Scenarios & Design Considerations

IA Low Dropout Regulator for 5V to 3.3V Conversion

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