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LM2674LD-3.3/NOPB from NS,National Semiconductor

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LM2674LD-3.3/NOPB

Manufacturer: NS

SIMPLE SWITCHER? 40V, 500mA Low Component Count Step-Down Regulator 16-WSON -40 to 125

Partnumber Manufacturer Quantity Availability
LM2674LD-3.3/NOPB,LM2674LD33NOPB NS 2100 In Stock

Description and Introduction

SIMPLE SWITCHER? 40V, 500mA Low Component Count Step-Down Regulator 16-WSON -40 to 125 The LM2674LD-3.3/NOPB is a voltage regulator manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Output Voltage:** 3.3V (Fixed)  
- **Input Voltage Range:** 8V to 40V  
- **Output Current:** 500mA  
- **Switching Frequency:** 260kHz (Typical)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOIC-8 (LD)  
- **Regulation Type:** Step-Down (Buck) Switching Regulator  
- **Protection Features:** Thermal Shutdown, Current Limiting  

### **Descriptions:**  
The LM2674LD-3.3/NOPB is a monolithic integrated circuit that provides all active functions for a step-down (buck) switching regulator. It is designed for high efficiency and simplicity, requiring minimal external components. The fixed 3.3V output version eliminates the need for external resistors.  

### **Features:**  
- Simple and easy-to-use design  
- Requires only 5 external components  
- Low power standby mode (1µA typical)  
- High efficiency (up to 90%)  
- Internal soft-start for controlled inrush current  
- Wide input voltage range (8V to 40V)  
- Fixed-frequency oscillator (260kHz)  
- Thermal shutdown and current limit protection  

This regulator is suitable for applications such as power supplies for industrial, automotive, and consumer electronics.

Application Scenarios & Design Considerations

SIMPLE SWITCHER? 40V, 500mA Low Component Count Step-Down Regulator 16-WSON -40 to 125

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