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L4978D from SGS-THOMSON

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L4978D

Manufacturer: SGS-THOMSON

2A STEP DOWN SWITCHING REGULATOR

Partnumber Manufacturer Quantity Availability
L4978D SGS-THOMSON 10 In Stock

Description and Introduction

2A STEP DOWN SWITCHING REGULATOR The L4978D is a switching regulator IC manufactured by SGS-THOMSON (now STMicroelectronics). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:  

### **Specifications:**  
- **Output Voltage:** Adjustable from 3.3V to 50V  
- **Output Current:** Up to 2.5A  
- **Input Voltage Range:** 8V to 55V  
- **Switching Frequency:** 200 kHz (fixed)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +150°C  
- **Package:** PowerDIP-16 or SO-16  

### **Descriptions:**  
- The L4978D is a step-down (buck) switching regulator designed for high-efficiency DC-DC conversion.  
- It includes an internal power MOSFET, PWM controller, and protection features.  
- Suitable for industrial, automotive, and power supply applications.  

### **Features:**  
- **Internal Power MOSFET:** Reduces external component count.  
- **Soft-Start:** Prevents inrush current at startup.  
- **Overcurrent Protection:** Limits output current to safe levels.  
- **Thermal Shutdown:** Protects the IC from overheating.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within input voltage range.  
- **Adjustable Output Voltage:** Set via external resistors.  

This information is based on the manufacturer's datasheet for the L4978D by SGS-THOMSON (STMicroelectronics).

Application Scenarios & Design Considerations

2A STEP DOWN SWITCHING REGULATOR

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