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LM20143MHX from NS,National Semiconductor

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LM20143MHX

Manufacturer: NS

3A, PowerWise? Adjustable Frequency Synchronous Buck Regulator

Partnumber Manufacturer Quantity Availability
LM20143MHX NS 380 In Stock

Description and Introduction

3A, PowerWise? Adjustable Frequency Synchronous Buck Regulator The LM20143MHX is a synchronous step-down DC-DC converter manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 42V  
- **Output Voltage Range:** 0.8V to 37V (adjustable via external resistors)  
- **Output Current:** Up to 3A  
- **Switching Frequency:** Adjustable from 300kHz to 2MHz  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 16-Pin LLP (Leadless Leadframe Package)  

### **Descriptions:**  
The LM20143MHX is a high-efficiency, synchronous buck regulator designed for high-performance applications. It integrates high-side and low-side MOSFETs, reducing external component count. The device supports adjustable switching frequency and features cycle-by-cycle current limiting, thermal shutdown, and an enable pin for power sequencing.  

### **Features:**  
- **Integrated Power MOSFETs:** Reduces external component requirements.  
- **Adjustable Frequency:** Allows optimization for efficiency or component size.  
- **Cycle-by-Cycle Current Limiting:** Protects against overloads.  
- **Thermal Shutdown:** Prevents damage from excessive heat.  
- **Soft-Start:** Reduces inrush current during startup.  
- **Synchronous Rectification:** Improves efficiency compared to diode-based designs.  
- **Wide Input Voltage Range:** Suitable for automotive, industrial, and telecom applications.  

This information is based on the manufacturer's datasheet.

Application Scenarios & Design Considerations

3A, PowerWise? Adjustable Frequency Synchronous Buck Regulator

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