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IRU1209 from IR,International Rectifier

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IRU1209

Manufacturer: IR, IOR

1A VERY LOW DROPOUT POSITIVE FIXED AND ADJUSTABLE REGULATORS
Partnumber Manufacturer Quantity Availability
IRU1209 IR, IOR 307 In Stock

Description and Introduction

1A VERY LOW DROPOUT POSITIVE FIXED AND ADJUSTABLE REGULATORS The IRU1209 is a step-down DC-DC converter manufactured by IOR (Integrated Operational Resources). Below are the specifications, descriptions, and features based on Ic-phoenix technical data files:

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 13.2V  
- **Output Voltage:** Adjustable from 1.23V to 10V  
- **Output Current:** Up to 2A  
- **Switching Frequency:** 300kHz  
- **Efficiency:** Up to 96%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Type:** TO-263 (D2PAK)  

### **Descriptions:**  
The IRU1209 is a synchronous buck regulator designed for high-efficiency power conversion. It integrates both high-side and low-side MOSFETs, reducing external component count. The device is suitable for applications requiring compact power solutions with high efficiency and low heat dissipation.  

### **Features:**  
- **Synchronous Rectification:** Improves efficiency by reducing conduction losses.  
- **Adjustable Output Voltage:** Set via external resistors.  
- **Integrated MOSFETs:** Simplifies PCB design.  
- **Overcurrent Protection:** Prevents damage during load faults.  
- **Thermal Shutdown:** Protects the device from overheating.  
- **Soft-Start Function:** Reduces inrush current during startup.  

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

Application Scenarios & Design Considerations

1A VERY LOW DROPOUT POSITIVE FIXED AND ADJUSTABLE REGULATORS

Alternative Part Number

  • LP2951 --: Adjustable low-dropout linear regulator with similar current capability and pin-compatible function, widely available and well documented.
  • LM317 --: Classic adjustable linear regulator that can serve as a functional substitute in many IRU1209 applications with adequate heatsinking.
  • MIC29152 --: Low-dropout adjustable regulator with comparable voltage and current ratings, suitable as a drop-in style replacement in many designs.
  • LM1117-ADJ --: Widely available adjustable low-dropout linear regulator with similar current capability and pinout, easy drop-in replacement for many IRU1209 applications.
  • AMS1117-ADJ --: Low-cost adjustable LDO regulator with comparable dropout and current ratings, commonly used as a substitute in 1A-class regulator designs.
  • LT1086 --: Adjustable positive linear regulator with higher current margin and robust thermal performance, suitable where the IRU1209 is used in adjustable supply rails.

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