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LM2675LD-3.3 from NS,National Semiconductor

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LM2675LD-3.3

Manufacturer: NS, NSC

SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator

Partnumber Manufacturer Quantity Availability
LM2675LD-3.3,LM2675LD33 NS, NSC 655 In Stock

Description and Introduction

SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator The LM2675LD-3.3 is a step-down voltage regulator manufactured by National Semiconductor (NSC). Here are its specifications, descriptions, and features based on factual information:  

### **Specifications:**  
- **Output Voltage:** 3.3V (fixed)  
- **Input Voltage Range:** 8V to 40V  
- **Output Current:** Up to 1A  
- **Switching Frequency:** 260 kHz (fixed)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-263 (D2PAK)  
- **Regulation Type:** Switching (Buck) Regulator  
- **Protection Features:** Thermal shutdown, current limiting  

### **Descriptions:**  
The LM2675LD-3.3 is a monolithic integrated circuit designed for step-down (buck) voltage regulation. It provides a fixed 3.3V output from an input voltage range of 8V to 40V. The device uses a high-efficiency switching architecture, reducing the need for external heat sinks.  

### **Features:**  
- Simple and easy-to-use design with minimal external components  
- High efficiency (up to 90%)  
- Internal soft-start for controlled inrush current  
- Wide input voltage range (8V to 40V)  
- Fixed 260 kHz switching frequency  
- Thermal shutdown and current limit protection  
- TO-263 (D2PAK) surface-mount package  

This information is based solely on the manufacturer's datasheet and does not include any additional recommendations or guidance.

Application Scenarios & Design Considerations

SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator

Alternative Part Number

  • TPS54231D --: Pin-compatible step-down converter family with similar 3.3V fixed output capability and wide input range; TI is the direct successor to National Semiconductor parts.
  • MP1584EN --: Widely available 3A step-down regulator with adjustable output that can be set to 3.3V, offering a cost-effective alternative in a different package family.
  • AP3211KTR-G1 --: Compact 1.5A synchronous buck converter suitable for 3.3V rails, providing a lower-cost alternative from a different manufacturer series.
  • L5973D --: 2.5A step-down switching regulator with adjustable output to 3.3V, robust alternative when the LM2675LD-3.3 is unavailable.

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