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LM2940CT-12 from NS,National Semiconductor

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LM2940CT-12

Manufacturer: NS

1A Low Dropout Regulator

Partnumber Manufacturer Quantity Availability
LM2940CT-12,LM2940CT12 NS 3297 In Stock

Description and Introduction

1A Low Dropout Regulator The LM2940CT-12 is a low-dropout voltage regulator manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Output Voltage:** 12V  
- **Output Current:** 1A  
- **Dropout Voltage:** 0.5V (typical at full load)  
- **Input Voltage Range:** Up to 26V  
- **Line Regulation:** 0.3% (typical)  
- **Load Regulation:** 0.4% (typical)  
- **Quiescent Current:** 10mA (typical)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-220  

### **Descriptions and Features:**  
- **Low Dropout Voltage:** Ensures stable output even when input voltage is close to the output.  
- **Internal Current Limiting:** Protects the regulator from excessive current conditions.  
- **Thermal Shutdown:** Prevents damage due to overheating.  
- **Reverse Battery Protection:** Safeguards against reverse polarity connection.  
- **High Ripple Rejection:** Reduces noise in the output voltage.  
- **Stable with Low-ESR Capacitors:** Works efficiently with inexpensive capacitors.  

The LM2940CT-12 is commonly used in automotive, industrial, and consumer electronics applications requiring a stable 12V supply.

Application Scenarios & Design Considerations

1A Low Dropout Regulator
Partnumber Manufacturer Quantity Availability
LM2940CT-12,LM2940CT12 NSC 4815 In Stock

Description and Introduction

1A Low Dropout Regulator The LM2940CT-12 is a low-dropout voltage regulator manufactured by National Semiconductor (NSC). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:  

### **Specifications:**  
- **Output Voltage:** 12V (fixed)  
- **Output Current:** Up to 1A  
- **Dropout Voltage:** Typically 0.5V at full load  
- **Input Voltage Range:** Up to 26V  
- **Line Regulation:** 0.3% (typical)  
- **Load Regulation:** 0.4% (typical)  
- **Quiescent Current:** 10mA (typical)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package Type:** TO-220 (5-lead)  

### **Descriptions:**  
- The LM2940CT-12 is a positive voltage regulator designed to provide a stable 12V output with low dropout voltage, making it suitable for battery-powered applications.  
- It includes built-in protection features such as thermal shutdown and current limiting.  
- The device is designed for use in automotive, industrial, and consumer electronics applications.  

### **Features:**  
- Low dropout voltage (0.5V typical at full load)  
- Reverse battery protection  
- Internal short-circuit current limit  
- Thermal shutdown protection  
- High ripple rejection ratio  
- Available in a TO-220 package for easy mounting  

This information is based solely on the manufacturer's datasheet and specifications.

Application Scenarios & Design Considerations

1A Low Dropout Regulator

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