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TOP257EN from POWER

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TOP257EN

Manufacturer: POWER

Enhanced EcoSmart, Integrated Off-Line Switcher with Advanced Feature Set and Extended Power Range

Partnumber Manufacturer Quantity Availability
TOP257EN POWER 10000 In Stock

Description and Introduction

Enhanced EcoSmart, Integrated Off-Line Switcher with Advanced Feature Set and Extended Power Range The TOP257EN is a member of the TOPSwitch-JX family of integrated switching power supply ICs manufactured by Power Integrations.  

### **Specifications:**  
- **Input Voltage Range:** 85–265 VAC (universal input)  
- **Output Power:** Up to 36 W (depending on design and thermal conditions)  
- **Switching Frequency:** 132 kHz  
- **Efficiency:** Up to 90% (depending on design)  
- **Integrated MOSFET:** 725 V, 3.3 Ω (typical)  
- **Operating Temperature Range:** -40°C to +150°C  
- **Package:** TO-220-7C (Through-hole)  

### **Descriptions:**  
The TOP257EN is a highly integrated offline switcher IC that combines a high-voltage MOSFET, PWM controller, and protection features in a single package. It is designed for flyback and buck-boost converters in power supplies for various applications, including industrial, consumer, and LED lighting.  

### **Features:**  
- **Integrated High-Voltage MOSFET:** Simplifies design and reduces component count.  
- **Frequency Jittering:** Reduces EMI filtering requirements.  
- **Auto-Restart Protection:** For output overload, open-loop, and short-circuit conditions.  
- **Line Undervoltage (UV) and Overvoltage (OV) Protection:** Ensures stable operation.  
- **Thermal Shutdown:** Protects against overheating.  
- **Soft-Start:** Reduces inrush current and stress on components.  
- **EcoSmart® Technology:** Enhances energy efficiency for compliance with global energy standards.  

This IC is commonly used in power adapters, LED drivers, and auxiliary power supplies.

Application Scenarios & Design Considerations

Enhanced EcoSmart, Integrated Off-Line Switcher with Advanced Feature Set and Extended Power Range

Alternative Part Number

  • LNK6777E --: LinkSwitch-HP family member in the same eSIP-7 package with integrated high-voltage MOSFET and comparable power capability, suitable as a drop-in style replacement for offline flyback designs.
  • TNY290PG --: TinySwitch-4 series device in a DIP-8 package offering integrated MOSFET and similar offline switching function; lower power class but usable for reduced-load designs.
  • VIPER27LN --: Offline high-voltage converter with integrated power MOSFET in a DIP-7 package, providing a functionally similar alternative from a different manufacturer and series.

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