IC Phoenix logo

Home ›  L  › L29 > LM2678T-12

LM2678T-12 from NSC,National Semiconductor

Fast Delivery, Competitive Price @IC-phoenix

If you need more electronic components or better pricing, we welcome any inquiry.

LM2678T-12

Manufacturer: NSC

SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator

Partnumber Manufacturer Quantity Availability
LM2678T-12,LM2678T12 NSC 450 In Stock

Description and Introduction

SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator The LM2678T-12 is a switching voltage regulator manufactured by National Semiconductor (NSC).  

### **Specifications:**  
- **Output Voltage:** Fixed 12V  
- **Output Current:** Up to 5A  
- **Input Voltage Range:** 8V to 40V  
- **Switching Frequency:** 260 kHz  
- **Efficiency:** Up to 92%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-220 (5-pin)  

### **Descriptions:**  
The LM2678T-12 is a step-down (buck) switching regulator that provides a fixed 12V output. It integrates a high-efficiency DC-DC converter with a power switch, oscillator, control circuitry, and protection features.  

### **Features:**  
- Simple-to-use, requiring minimal external components  
- Internal soft-start for controlled inrush current  
- Thermal shutdown and current limit protection  
- Low standby current in shutdown mode  
- Adjustable output version available (LM2678)  

This regulator is commonly used in power supply applications requiring high efficiency and compact design.

Application Scenarios & Design Considerations

SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator

Alternative Part Number

  • LT1076CT-12 --: Pin-compatible 12V step-down switching regulator with similar current rating and topology, widely used as a direct substitute in TO-220 packages.
  • MC34166T-12 --: 12V fixed-output buck regulator in TO-220 with comparable input range and load capability, suitable for drop-in replacement in many designs.
  • TPS54312PWP --: Modern 12V-output step-down converter with higher efficiency and integrated FETs; requires layout adjustment but offers improved performance as a functional replacement.

Request Quotation

For immediate assistance, call us at +86 533 2716050 or email [email protected]

Part Number Quantity Target Price($USD) Email Contact Person
We offer highly competitive channel pricing. Get in touch for details.

Specializes in hard-to-find components chips