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IR3842M from IR,International Rectifier

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IR3842M

Manufacturer: IR, IOR

Highly Efficient Integrated 4A Sync Buck Regulator

Partnumber Manufacturer Quantity Availability
IR3842M IR, IOR 1283 In Stock

Description and Introduction

Highly Efficient Integrated 4A Sync Buck Regulator The IR3842M is a synchronous buck regulator IC manufactured by International Rectifier (IR). Below are the factual details about its specifications, descriptions, and features:

### **Manufacturer:**  
- **International Rectifier (IR)**  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 21V  
- **Output Voltage Range:** Adjustable down to 0.6V  
- **Output Current:** Up to 12A  
- **Switching Frequency:** Adjustable (300kHz to 1MHz)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 5mm x 6mm PQFN (Power Quad Flat No-Lead)  

### **Descriptions:**  
- The IR3842M is a high-performance, synchronous step-down DC-DC regulator.  
- It integrates high-side and low-side MOSFETs for efficient power conversion.  
- Designed for applications requiring high current output with tight voltage regulation.  

### **Features:**  
- **Integrated Power MOSFETs:** Reduces external component count.  
- **Adjustable Frequency:** Allows optimization for efficiency and size.  
- **Programmable Soft-Start:** Prevents inrush current issues.  
- **Overcurrent Protection (OCP):** Safeguards against excessive load conditions.  
- **Thermal Shutdown:** Protects the IC from overheating.  
- **Precision Reference Voltage (0.6V):** Ensures accurate output regulation.  
- **Power Good Indicator:** Monitors output voltage status.  

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

Application Scenarios & Design Considerations

Highly Efficient Integrated 4A Sync Buck Regulator

Alternative Part Number

  • TPS54331 --: Widely used 3A step-down converter with integrated switch, similar input voltage range and function, easy drop-in for many IR3842M designs.
  • L5973D --: 2.5A monolithic buck regulator with comparable voltage and current ratings, well-established alternative for point-of-load supplies.
  • MP1584 --: 3A high-frequency step-down converter in a small package, cost-effective substitute with similar electrical characteristics.
  • LMR14030 --: 3A 40V step-down regulator with integrated MOSFET, robust input rating and simple external components, suitable functional replacement.

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