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LM3475MFX from NSC,National Semiconductor

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LM3475MFX

Manufacturer: NSC

Hysteretic PFET Buck Controller

Partnumber Manufacturer Quantity Availability
LM3475MFX NSC 67 In Stock

Description and Introduction

Hysteretic PFET Buck Controller The LM3475MFX is a switching regulator IC manufactured by National Semiconductor (NSC).  

### **Specifications:**  
- **Input Voltage Range:** 2.97V to 40V  
- **Output Voltage Range:** Adjustable  
- **Output Current:** Up to 5A (with external components)  
- **Switching Frequency:** Adjustable (100kHz to 1MHz)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 5-Lead SOT-23  

### **Descriptions:**  
The LM3475MFX is a high-efficiency, step-down (buck) switching regulator designed for a wide range of applications. It integrates a low-side N-channel MOSFET driver and supports adjustable output voltage and frequency.  

### **Features:**  
- **Wide Input Voltage Range:** Supports operation from 2.97V to 40V.  
- **Adjustable Output Voltage:** Set via external resistors.  
- **High Efficiency:** Up to 95% efficiency with synchronous rectification.  
- **Adjustable Switching Frequency:** 100kHz to 1MHz for flexibility in design.  
- **Integrated MOSFET Driver:** Simplifies external component requirements.  
- **Thermal Shutdown & Overcurrent Protection:** Enhances reliability.  
- **Small Package (SOT-23):** Suitable for space-constrained applications.  

This information is based solely on the manufacturer's specifications.

Application Scenarios & Design Considerations

Hysteretic PFET Buck Controller
Partnumber Manufacturer Quantity Availability
LM3475MFX NS 1995 In Stock

Description and Introduction

Hysteretic PFET Buck Controller The LM3475MFX is a switching controller manufactured by National Semiconductor (NS). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:  

### **Manufacturer:** National Semiconductor (NS)  
### **Part Number:** LM3475MFX  

### **Description:**  
The LM3475MFX is a high-efficiency, low-side N-channel MOSFET controller designed for step-down (buck) DC-DC converter applications. It operates with an input voltage range of 3V to 36V and provides a regulated output voltage.  

### **Key Features:**  
- **Input Voltage Range:** 3V to 36V  
- **Adjustable Output Voltage**  
- **Switching Frequency:** Up to 1MHz  
- **Low Quiescent Current:** 1.2mA (typical)  
- **Current Mode Control**  
- **Internal Soft-Start**  
- **Thermal Shutdown Protection**  
- **Under-Voltage Lockout (UVLO)**  
- **Synchronous Rectification Capability**  
- **Available in 8-Pin SOIC Package**  

### **Applications:**  
- DC-DC Buck Converters  
- Distributed Power Systems  
- Industrial and Automotive Power Supplies  

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

Application Scenarios & Design Considerations

Hysteretic PFET Buck Controller

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