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LM3940LD-3.3 from NS,National Semiconductor

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LM3940LD-3.3

Manufacturer: NS

IA Low Dropout Regulator for 5V to 3.3V Conversion

Partnumber Manufacturer Quantity Availability
LM3940LD-3.3,LM3940LD33 NS 958 In Stock

Description and Introduction

IA Low Dropout Regulator for 5V to 3.3V Conversion The LM3940LD-3.3 is a low-dropout voltage regulator manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Output Voltage:** 3.3V  
- **Output Current:** 1A  
- **Dropout Voltage:** 0.5V (typical)  
- **Input Voltage Range:** Up to 7V  
- **Line Regulation:** 0.05% (typical)  
- **Load Regulation:** 0.1% (typical)  
- **Quiescent Current:** 10mA (typical)  
- **Package:** TO-252 (DPAK)  
- **Operating Temperature Range:** -40°C to +125°C  

### **Descriptions:**  
The LM3940LD-3.3 is a fixed-output, low-dropout regulator designed to provide a stable 3.3V output from an input voltage up to 7V. It is optimized for applications requiring low dropout and high current capability.  

### **Features:**  
- Low dropout voltage (0.5V typical at 1A)  
- High output current (1A)  
- Thermal shutdown and current limit protection  
- Stable with low-ESR capacitors  
- Fast transient response  
- Available in surface-mount DPAK package  

This regulator is commonly used in battery-powered devices, embedded systems, and other applications requiring efficient power management.

Application Scenarios & Design Considerations

IA Low Dropout Regulator for 5V to 3.3V Conversion

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