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IR3842MTRPBF from IR,International Rectifier

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IR3842MTRPBF

Manufacturer: IR, IRF

HIGHLY EFFICIENT INTEGRATED 4A SYNCHRONOUS BUCK REGULATOR

Partnumber Manufacturer Quantity Availability
IR3842MTRPBF IR, IRF 45671 In Stock

Description and Introduction

HIGHLY EFFICIENT INTEGRATED 4A SYNCHRONOUS BUCK REGULATOR The IR3842MTRPBF is a high-performance synchronous buck regulator from Infineon Technologies (formerly International Rectifier).  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 16V  
- **Output Voltage Range:** 0.6V to 5.5V (adjustable)  
- **Output Current:** Up to 12A  
- **Switching Frequency:** 300kHz to 1MHz (adjustable)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 5mm x 6mm Power QFN (Quad Flat No-Lead)  

### **Descriptions and Features:**  
- **High-Efficiency Synchronous Buck Regulator:** Optimized for low-voltage, high-current applications.  
- **Integrated MOSFETs:** Includes high-side and low-side power MOSFETs for compact design.  
- **Adjustable Output Voltage:** Set via external resistor divider.  
- **Programmable Switching Frequency:** Allows optimization for efficiency and component size.  
- **Advanced Control Scheme:** Employs a constant-on-time (COT) architecture for fast transient response.  
- **Protection Features:** Includes overcurrent protection (OCP), overvoltage protection (OVP), undervoltage lockout (UVLO), and thermal shutdown.  
- **Wide Input Voltage Range:** Suitable for various power supply applications.  
- **Low Quiescent Current:** Enhances efficiency in light-load conditions.  

This regulator is commonly used in point-of-load (POL) applications, industrial systems, telecom equipment, and embedded computing.

Application Scenarios & Design Considerations

HIGHLY EFFICIENT INTEGRATED 4A SYNCHRONOUS BUCK REGULATOR

Alternative Part Number

  • TPS54331DR --: 3A, 28V synchronous buck converter in SOIC-8 with integrated MOSFETs, a common drop-in class replacement for the IR3842 family.
  • L5973D --: 2.5A step-down converter with integrated switch, similar input voltage range and pin-compatible power stage for many IR3842 designs.
  • MP1584EN --: 3A, 28V synchronous buck regulator in SOIC-8, widely used as a cost-effective alternative for IR3842MTRPBF applications.

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