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LM2745MTC from NS,National Semiconductor

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LM2745MTC

Manufacturer: NS

Synchronous Buck Controller with Pre-bias Startup, and Optional Clock Synchronization

Partnumber Manufacturer Quantity Availability
LM2745MTC NS 1070 In Stock

Description and Introduction

Synchronous Buck Controller with Pre-bias Startup, and Optional Clock Synchronization The LM2745MTC is a synchronous buck regulator controller manufactured by National Semiconductor (NS). Below are the factual details about its specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 30V  
- **Output Voltage Range:** 0.8V to 5.5V  
- **Switching Frequency:** Adjustable from 50kHz to 1MHz  
- **Maximum Duty Cycle:** 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 16-TSSOP (MTC)  

### **Descriptions:**  
- The LM2745MTC is a high-performance synchronous buck regulator controller designed for step-down DC-DC conversion.  
- It drives external N-channel MOSFETs to achieve high-efficiency power conversion.  
- The device includes features like adjustable soft-start, precision reference voltage, and cycle-by-cycle current limiting.  

### **Features:**  
- **Adjustable Output Voltage:** Supports output voltages from 0.8V to 5.5V.  
- **Synchronous Operation:** Improves efficiency by reducing power loss.  
- **Programmable Frequency:** Allows optimization for efficiency and component size.  
- **Soft-Start Control:** Prevents inrush current at startup.  
- **Cycle-by-Cycle Current Limiting:** Protects against overcurrent conditions.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation under low input voltage conditions.  
- **Thermal Shutdown:** Protects the device from overheating.  

This information is based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

Synchronous Buck Controller with Pre-bias Startup, and Optional Clock Synchronization

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