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IR3843WMTRPBF from IR,International Rectifier

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IR3843WMTRPBF

Manufacturer: IR, IRF

Highly Efficient Integrated 2A Sync Buck Regulator

Partnumber Manufacturer Quantity Availability
IR3843WMTRPBF IR, IRF 6270 In Stock

Description and Introduction

Highly Efficient Integrated 2A Sync Buck Regulator The IR3843WMTRPBF is a synchronous buck regulator from Infineon Technologies. Here are its key specifications, descriptions, and features:  

### **Manufacturer:**  
Infineon Technologies  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 21V  
- **Output Voltage Range:** 0.6V to 75% of VIN  
- **Output Current:** Up to 15A  
- **Switching Frequency:** 300kHz to 1MHz (adjustable)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 28-Pin QFN (5mm x 5mm)  

### **Descriptions:**  
- High-performance synchronous buck regulator with integrated MOSFETs.  
- Designed for point-of-load (POL) applications in networking, computing, and industrial systems.  
- Supports pre-biased output startup.  

### **Features:**  
- **Integrated Power MOSFETs:** Reduces external component count.  
- **Programmable Frequency:** Allows optimization for efficiency and size.  
- **Adjustable Soft-Start:** Prevents inrush current.  
- **Overcurrent Protection (OCP):** Enhances reliability.  
- **Thermal Shutdown:** Prevents overheating.  
- **Power Good Indicator:** Monitors output status.  
- **Differential Remote Sensing:** Improves voltage regulation accuracy.  

This regulator is optimized for high-efficiency, compact power solutions.

Application Scenarios & Design Considerations

Highly Efficient Integrated 2A Sync Buck Regulator

Alternative Part Number

  • TPS54331DR --: 3A 28V synchronous buck converter in SOIC-8, similar input range and current rating, widely available and pin-compatible in function.
  • MP1584EN --: 3A 28V step-down converter with integrated switch, comparable performance and small footprint, good cost-effective substitute.
  • LMR14030SDDAR --: 3A 40V buck regulator with integrated MOSFETs, higher voltage margin and similar switching regulator function for the same application.
  • AP65550 --: 5A synchronous buck converter in SOIC-8 with integrated switches, similar pin function and performance class, suitable replacement when higher current margin is acceptable.

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