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LM3478MMX NOPB from NSC,National Semiconductor

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LM3478MMX NOPB

Manufacturer: NSC

40V Wide Vin Low-Side N-Channel Controller for Switching Regulator 8-VSSOP -40 to 125

Partnumber Manufacturer Quantity Availability
LM3478MMX NOPB,LM3478MMXNOPB NSC 8028 In Stock

Description and Introduction

40V Wide Vin Low-Side N-Channel Controller for Switching Regulator 8-VSSOP -40 to 125 The LM3478MMX/NOPB is a switching controller manufactured by National Semiconductor (NSC). Below are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Input Voltage Range:** 2.97V to 40V  
- **Output Voltage Range:** Adjustable (depends on external components)  
- **Switching Frequency:** Adjustable up to 1MHz  
- **Output Current:** Up to 5A (with external FET)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 8-Pin VSSOP (MM)  
- **Control Method:** Voltage Mode PWM  
- **Duty Cycle Range:** 0% to 100%  
- **Efficiency:** Up to 95%  

### **Descriptions:**  
The LM3478MMX/NOPB is a high-performance, voltage-mode PWM controller designed for DC-DC boost, flyback, and SEPIC converter applications. It features a wide input voltage range and adjustable switching frequency, making it suitable for power supply designs in industrial, automotive, and telecom systems.  

### **Features:**  
- **Wide Input Voltage Range (2.97V to 40V)**  
- **Adjustable Switching Frequency (up to 1MHz)**  
- **High-Efficiency Operation**  
- **Soft-Start Functionality**  
- **Undervoltage Lockout (UVLO)**  
- **Cycle-by-Cycle Current Limiting**  
- **Thermal Shutdown Protection**  
- **Low Quiescent Current (1.5mA typical)**  

This information is sourced from the manufacturer's datasheet. For detailed application notes, refer to the official documentation.

Application Scenarios & Design Considerations

40V Wide Vin Low-Side N-Channel Controller for Switching Regulator 8-VSSOP -40 to 125

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