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SC2621A from SEMTECH

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SC2621A

Manufacturer: SEMTECH, SC

Voltage Mode PWM Controller With Linear Power Regulator

Partnumber Manufacturer Quantity Availability
SC2621A SEMTECH, SC 1182 In Stock

Description and Introduction

Voltage Mode PWM Controller With Linear Power Regulator Part Number: **SC2621A**  
Manufacturer: **SEMTECH**  

### **Specifications:**  
- **Type**: Synchronous Buck Converter  
- **Input Voltage Range**: 4.5V to 18V  
- **Output Voltage Range**: Adjustable from 0.6V to 5.5V  
- **Output Current**: Up to 6A  
- **Switching Frequency**: 500kHz (adjustable)  
- **Efficiency**: Up to 95%  
- **Operating Temperature Range**: -40°C to +125°C  
- **Package**: 16-Pin TSSOP  

### **Descriptions:**  
The **SC2621A** is a high-efficiency, synchronous step-down DC-DC converter designed for applications requiring high current and tight voltage regulation. It integrates low RDS(ON) MOSFETs to minimize power loss and supports a wide input voltage range, making it suitable for industrial, automotive, and telecom applications.  

### **Features:**  
- **Integrated Power MOSFETs** (High-side and Low-side)  
- **Adjustable Output Voltage** via external resistors  
- **Programmable Soft-Start**  
- **Over-Current Protection (OCP)**  
- **Thermal Shutdown Protection**  
- **Under-Voltage Lockout (UVLO)**  
- **Synchronous Rectification** for improved efficiency  
- **Low Quiescent Current** in standby mode  

For detailed application notes and schematics, refer to the official **SEMTECH datasheet**.

Application Scenarios & Design Considerations

Voltage Mode PWM Controller With Linear Power Regulator

Alternative Part Number

  • TPS562201 --: Pin-compatible step-down converter with similar input voltage range and current rating, widely available and well documented.
  • MP2315 --: Comparable synchronous buck regulator offering similar efficiency and package options, suitable drop-in replacement for many designs.
  • AP3211 --: Low-cost buck converter with matching voltage and current specifications, good alternative when supply chain availability is a concern.
  • LM2621MM --: Pin-compatible boost converter with similar input voltage range and switching frequency, widely available and well documented.
  • MAX1771CSA --: Step-up DC-DC controller with comparable functionality and current capability, suitable as a functional substitute.
  • MC34063A --: Versatile general-purpose switching regulator IC that can be configured for boost operation, low cost and broadly sourced.

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