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LM20124MH from NS,National Semiconductor

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LM20124MH

Manufacturer: NS

4A, 1MHz PowerWise? Synchronous Buck Regulator

Partnumber Manufacturer Quantity Availability
LM20124MH NS 737 In Stock

Description and Introduction

4A, 1MHz PowerWise? Synchronous Buck Regulator The LM20124MH is a synchronous buck regulator manufactured by National Semiconductor (NS). Below are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 28V  
- **Output Voltage Range:** 0.6V to 5.5V (adjustable)  
- **Output Current:** Up to 12A  
- **Switching Frequency:** Adjustable from 300kHz to 1.5MHz  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 28-pin LLP (Leadless Leadframe Package)  

### **Descriptions:**  
The LM20124MH is a high-efficiency, synchronous step-down DC-DC converter designed for high-current applications. It integrates power MOSFETs and provides a compact, high-performance solution for point-of-load regulation.  

### **Features:**  
- **Integrated Power MOSFETs** for reduced external component count  
- **Adjustable Output Voltage** via external resistor divider  
- **Programmable Soft-Start** to minimize inrush current  
- **Precision Reference Voltage** (0.6V ±1%)  
- **Cycle-by-Cycle Current Limiting** for protection  
- **Thermal Shutdown** to prevent overheating  
- **Power Good Indicator** for monitoring output status  
- **Synchronization Capability** with an external clock  

This information is sourced from the manufacturer's datasheet.

Application Scenarios & Design Considerations

4A, 1MHz PowerWise? Synchronous Buck Regulator
Partnumber Manufacturer Quantity Availability
LM20124MH NSC 229 In Stock

Description and Introduction

4A, 1MHz PowerWise? Synchronous Buck Regulator The LM20124MH is a synchronous buck regulator manufactured by National Semiconductor (NSC). Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 20V  
- **Output Voltage Range:** Adjustable from 0.8V to 5.5V  
- **Output Current:** Up to 12A  
- **Switching Frequency:** Adjustable from 200kHz to 1.5MHz  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 28-pin HTSSOP with exposed pad  

### **Descriptions:**  
- The LM20124MH is a high-performance, step-down DC-DC converter designed for powering low-voltage, high-current applications.  
- It integrates high-side and low-side MOSFETs for synchronous rectification, improving efficiency.  
- Features a constant-on-time (COT) control architecture for fast transient response.  

### **Features:**  
- **Adjustable Output Voltage** via external resistor divider  
- **Programmable Soft-Start** for controlled startup  
- **Power Good Indicator** for output voltage monitoring  
- **Overcurrent Protection (OCP)** with hiccup mode  
- **Thermal Shutdown Protection**  
- **Pre-Biased Output Compatibility**  
- **External Frequency Synchronization** capability  

This information is based on the manufacturer's datasheet for the LM20124MH.

Application Scenarios & Design Considerations

4A, 1MHz PowerWise? Synchronous Buck Regulator

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