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STRF6653

Manufacturer: SANKEN, SK

OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS

Partnumber Manufacturer Quantity Availability
STRF6653 SANKEN, SK 1437 In Stock

Description and Introduction

OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS The STRF6653 is a power switching regulator IC manufactured by SANKEN. Below are its key specifications, descriptions, and features based on available information:  

### **Specifications:**  
- **Input Voltage Range:** 85V to 265V (AC)  
- **Output Power:** Up to 120W (depending on design)  
- **Switching Frequency:** ~50kHz to 100kHz (adjustable)  
- **Output Voltage:** Adjustable (depends on external components)  
- **Maximum Drain-Source Voltage (VDS):** 650V  
- **Maximum Drain Current (ID):** 10A (pulse)  
- **On-Resistance (RDS(ON)):** ~1.5Ω (typical)  
- **Operating Temperature Range:** -20°C to +125°C  
- **Package:** TO-3P (5-pin)  

### **Descriptions:**  
- The STRF6653 is a **high-voltage power switching regulator IC** designed for **offline switching power supplies**.  
- It integrates a **MOSFET, PWM controller, and protection circuits** into a single package.  
- Suitable for **AC/DC converters, SMPS (Switched-Mode Power Supplies), and power adapters**.  
- Includes built-in **overcurrent protection (OCP), overvoltage protection (OVP), and thermal shutdown (TSD)**.  

### **Features:**  
- **High-voltage startup circuit** (eliminates the need for an external startup resistor).  
- **Soft-start function** to reduce inrush current.  
- **Frequency jittering** for improved EMI performance.  
- **Low standby power consumption** (meets energy efficiency standards).  
- **Auto-restart protection** in fault conditions.  

This IC is commonly used in **TV power supplies, monitors, and industrial power systems**. For exact application details, refer to the official **SANKEN datasheet**.

Application Scenarios & Design Considerations

OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS

Alternative Part Number

  • STR-F6653 --: Same STR-F series offline switching regulator with identical pinout and ratings; direct functional equivalent.
  • STRF6654 --: Closely related STR-F series device with similar power handling; usable as a drop-in substitute in many SMPS designs.
  • STRW6753 --: Sanken STR-W series switching regulator offering comparable voltage/current capability for similar power supply applications.
  • STR-W6753 --: Alternative Sanken offline switching regulator from a different series offering similar functionality and power handling for SMPS use.
  • STR-F6654 --: Same STR-F665x family with slightly higher current rating; pin-compatible and commonly used as a substitute in SMPS applications where the F6653 is unavailable.

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