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KA3S1265RFYDTU from FAIRCHILD,Fairchild Semiconductor

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KA3S1265RFYDTU

Manufacturer: FAIRCHILD

RECOMMEND NEW DEVICE KA5Q1265RF

Partnumber Manufacturer Quantity Availability
KA3S1265RFYDTU FAIRCHILD 161 In Stock

Description and Introduction

RECOMMEND NEW DEVICE KA5Q1265RF **Part Number:** KA3S1265RFYDTU  
**Manufacturer:** FAIRCHILD  

### **Specifications:**  
- **Type:** Switching Regulator IC  
- **Topology:** Flyback Converter  
- **Input Voltage Range:** 85V to 265V AC (Universal Input)  
- **Output Power:** Up to 12W  
- **Switching Frequency:** 100 kHz (typical)  
- **Output Voltage:** Adjustable (depends on external components)  
- **Operating Temperature Range:** -25°C to +85°C  
- **Package:** TO-220F (Insulated Package)  

### **Descriptions:**  
- Designed for offline flyback converters in SMPS (Switched-Mode Power Supply) applications.  
- Features built-in high-voltage power MOSFET for simplified design.  
- Includes frequency jittering to reduce EMI emissions.  
- Provides over-voltage, over-current, and thermal shutdown protection.  

### **Features:**  
- **Integrated 650V MOSFET**  
- **Auto-Restart Protection** for fault conditions  
- **Low Standby Power Consumption** (<100mW)  
- **Soft Start** to reduce inrush current  
- **Frequency Jittering** for improved EMI performance  
- **Cycle-by-Cycle Current Limiting**  

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

(Note: Always refer to the official datasheet for detailed technical parameters and application guidelines.)

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