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IRU3018 from IOR,International Rectifier

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IRU3018

Manufacturer: IOR, IRF

5-BIT PROGRAMMABLE SYNCHRONOUS BUCK PLUS LDO CONTROLLER AND 200mA LDO ON-BOARD

Partnumber Manufacturer Quantity Availability
IRU3018 IOR, IRF 3930 In Stock

Description and Introduction

5-BIT PROGRAMMABLE SYNCHRONOUS BUCK PLUS LDO CONTROLLER AND 200mA LDO ON-BOARD The IRU3018 is a synchronous buck converter IC manufactured by IOR (Integrated Operational Research). Below are the specifications, descriptions, and features based on Ic-phoenix technical data files:

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 21V  
- **Output Voltage Range:** 0.8V to 18V (adjustable via external resistors)  
- **Output Current:** Up to 3A  
- **Switching Frequency:** 300kHz (fixed)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Descriptions:**  
- The IRU3018 is a step-down DC-DC converter designed for high-efficiency power conversion.  
- It integrates a high-side MOSFET and a low-side MOSFET driver, reducing external component count.  
- Suitable for applications requiring stable voltage regulation with high current output.  

### **Features:**  
- **Integrated Power MOSFETs:** Reduces external components and board space.  
- **Adjustable Output Voltage:** Set via external resistor divider.  
- **Over-Current Protection (OCP):** Prevents damage from excessive load currents.  
- **Thermal Shutdown Protection:** Safeguards the IC from overheating.  
- **Soft-Start Function:** Reduces inrush current during startup.  
- **Wide Input Voltage Range:** Supports various power sources.  

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

Application Scenarios & Design Considerations

5-BIT PROGRAMMABLE SYNCHRONOUS BUCK PLUS LDO CONTROLLER AND 200mA LDO ON-BOARD

Alternative Part Number

  • ISL6520 --: Single synchronous buck PWM controller with similar function and pinout, widely used as a drop-in replacement for IRU3018 in DC-DC converter designs.
  • TPS5210 --: Synchronous buck controller offering comparable voltage-mode control and gate drive capability, suitable for similar CPU/core supply applications.
  • LTC1553 --: 5-bit programmable synchronous buck controller with similar architecture and output range, usable as a functional substitute for IRU3018.
  • SC1408 --: Pin-compatible synchronous buck controller with similar voltage-mode architecture and gate drive, commonly used as a drop-in substitute for IRU3018 in DC-DC converter designs.
  • LM2743 --: Synchronous buck controller with comparable input range and feedback reference, offering similar functionality and easy adaptation with minor external component changes.

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