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IRU3146CFTR from IOR,International Rectifier

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IRU3146CFTR

Manufacturer: IOR, IR

Dual Synchronous PWM Controller with Current Sharing Circuitry and Auto-Restart
Partnumber Manufacturer Quantity Availability
IRU3146CFTR IOR, IR 4970 In Stock

Description and Introduction

Dual Synchronous PWM Controller with Current Sharing Circuitry and Auto-Restart **Part Number:** IRU3146CFTR  

**Manufacturer:** Infineon Technologies  

### **IR Specifications:**  
- **Input Voltage Range:** 4.5V to 36V  
- **Output Current:** Up to 3A  
- **Switching Frequency:** Adjustable (typically 500kHz)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 16-Lead SOIC  

### **Descriptions:**  
The IRU3146CFTR is a synchronous buck regulator designed for high-efficiency step-down DC-DC conversion. It integrates high-side and low-side MOSFETs, reducing external component count and simplifying design.  

### **Features:**  
- **Integrated Power MOSFETs** (High-side and low-side)  
- **Adjustable Output Voltage** (0.8V to 24V)  
- **Programmable Soft-Start**  
- **Overcurrent Protection (OCP)**  
- **Thermal Shutdown Protection**  
- **Undervoltage Lockout (UVLO)**  
- **Synchronous Rectification** for improved efficiency  
- **Wide Input Voltage Range** (4.5V to 36V)  

This part is commonly used in industrial, automotive, and telecom applications requiring efficient power conversion.

Application Scenarios & Design Considerations

Dual Synchronous PWM Controller with Current Sharing Circuitry and Auto-Restart

Alternative Part Number

  • ISL6537CRZ --: Dual PWM controller for DDR memory and chipset power, functionally similar to the IRU3146 dual synchronous buck controller and widely available.
  • TPS51116PWP --: Integrated DDR memory power supply controller with dual synchronous buck outputs, comparable function and package to the IRU3146.
  • RT8206BGQW --: Dual-channel synchronous buck controller for DDR/chipset rails, offering similar dual-output regulation in a comparable footprint.
  • ISL6545CBZ --: Single-phase synchronous buck PWM controller with integrated drivers, functionally similar to the IRU3146 dual-phase controller and widely available from the same vendor family.
  • TPS40057PWPR --: Wide-input synchronous buck controller with integrated gate drivers, suitable as a functional replacement for the IRU3146 in point-of-load converter designs.
  • LTC3851EGN --: Synchronous step-down switching regulator controller with integrated drivers, offering comparable control and drive capability for similar power supply applications.

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