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LM5642XMT from NS,National Semiconductor

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LM5642XMT

Manufacturer: NS

LM5642/LM5642X High Voltage, Dual Synchronous Buck Converter with Oscillator Synchronization

Partnumber Manufacturer Quantity Availability
LM5642XMT NS 1883 In Stock

Description and Introduction

LM5642/LM5642X High Voltage, Dual Synchronous Buck Converter with Oscillator Synchronization The LM5642XMT is a dual synchronous buck regulator manufactured by Texas Instruments (formerly National Semiconductor, NS).  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 26V  
- **Output Voltage Range:** Adjustable from 0.6V to 5.5V  
- **Output Current:** Up to 2A per channel (dual output)  
- **Switching Frequency:** 300kHz to 1MHz (adjustable)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 16-pin TSSOP  

### **Descriptions and Features:**  
- **Dual Synchronous Buck Regulator:** Provides two independent step-down DC-DC converters.  
- **Adjustable Frequency:** Allows optimization for efficiency or component size.  
- **Synchronous Rectification:** Improves efficiency by reducing power loss.  
- **Integrated MOSFET Drivers:** Simplifies design by eliminating external drivers.  
- **Soft-Start Function:** Prevents inrush current at startup.  
- **Power Good Indicator:** Monitors output voltage status.  
- **Current Mode Control:** Ensures stable operation with fast transient response.  
- **Thermal Shutdown Protection:** Safeguards against overheating.  

This regulator is commonly used in networking, industrial, and telecom applications requiring efficient power conversion.

Application Scenarios & Design Considerations

LM5642/LM5642X High Voltage, Dual Synchronous Buck Converter with Oscillator Synchronization
Partnumber Manufacturer Quantity Availability
LM5642XMT NS 32 In Stock

Description and Introduction

LM5642/LM5642X High Voltage, Dual Synchronous Buck Converter with Oscillator Synchronization The LM5642XMT is a dual synchronous buck regulator manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 26.5V  
- **Output Voltage Range:** Adjustable from 0.8V to 5.5V  
- **Output Current:** Up to 2A per channel (dual-channel)  
- **Switching Frequency:** Adjustable from 50kHz to 1MHz  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 16-Pin TSSOP  

### **Descriptions and Features:**  
- **Dual Synchronous Buck Regulator:** Provides two independent step-down DC-DC converters.  
- **Adjustable Frequency:** Allows optimization for efficiency or component size.  
- **Integrated Power MOSFETs:** Reduces external component count.  
- **Soft-Start Function:** Prevents inrush current at startup.  
- **Current Mode Control:** Improves transient response and stability.  
- **Power Good Indicator:** Monitors output voltage status.  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  
- **Synchronization Capability:** Can sync to an external clock.  

This regulator is commonly used in industrial, automotive, and telecom applications requiring efficient power conversion.

Application Scenarios & Design Considerations

LM5642/LM5642X High Voltage, Dual Synchronous Buck Converter with Oscillator Synchronization

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