IC Phoenix logo

Home ›  L  › L29 > LM2679SX-ADJ

LM2679SX-ADJ from NS,National Semiconductor

Fast Delivery, Competitive Price @IC-phoenix

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

LM2679SX-ADJ

Manufacturer: NS, NATIONALSEMI

SIMPLE SWITCHER 5A Step-Down Voltage Regulator with Adjustable Current Limit

Partnumber Manufacturer Quantity Availability
LM2679SX-ADJ,LM2679SXADJ NS, NATIONALSEMI 21696 In Stock

Description and Introduction

SIMPLE SWITCHER 5A Step-Down Voltage Regulator with Adjustable Current Limit The LM2679SX-ADJ is a switching voltage regulator manufactured by National Semiconductor (now part of Texas Instruments). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** National Semiconductor (NATIONALSEMI)  
- **Type:** Step-Down (Buck) Switching Regulator  
- **Output Voltage:** Adjustable (1.23V to 37V)  
- **Output Current:** Up to 3A  
- **Input Voltage Range:** 8V to 40V  
- **Switching Frequency:** 260 kHz (fixed)  
- **Efficiency:** Up to 92%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-263-7 (SMD)  

### **Descriptions:**
The LM2679SX-ADJ is a high-efficiency, adjustable-output switching regulator designed for step-down voltage conversion. It integrates a high-side N-channel MOSFET switch, simplifying circuit design while delivering high efficiency. The adjustable output voltage is set using an external resistor divider.  

### **Features:**
- **Adjustable Output Voltage** (1.23V to 37V)  
- **3A Output Current Capability**  
- **Wide Input Voltage Range (8V to 40V)**  
- **High Efficiency (up to 92%)**  
- **Fixed 260 kHz Switching Frequency**  
- **Integrated N-Channel MOSFET Switch**  
- **Thermal Shutdown Protection**  
- **Soft-Start Functionality**  
- **Low Power Standby Mode**  
- **TO-263-7 Package (Surface Mount)**  

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

Application Scenarios & Design Considerations

SIMPLE SWITCHER 5A Step-Down Voltage Regulator with Adjustable Current Limit

Alternative Part Number

  • TPS5430DDA --: 3A step-down converter with adjustable output, similar input voltage range and current rating, widely available and pin-compatible in function.
  • LT1765EFE --: 3A adjustable step-down switching regulator with comparable input range and performance, suitable as a functional replacement.
  • MC34063A --: Versatile adjustable DC-DC converter IC that can be configured as a step-down regulator, low-cost fallback though with lower current capability.
  • LT1076CT --: Adjustable step-down switching regulator with comparable input voltage and current range, well-established alternative for LM2679 designs.
  • MC34063AP --: Versatile adjustable buck/boost/inverting switching regulator, widely available and commonly used as a lower-cost substitute for simple LM2679 applications.

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