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KA5H0380RTU from FAIRCHILD,Fairchild Semiconductor

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KA5H0380RTU

Manufacturer: FAIRCHILD

3A/800V 100KHz Power Switch

Partnumber Manufacturer Quantity Availability
KA5H0380RTU FAIRCHILD 29 In Stock

Description and Introduction

3A/800V 100KHz Power Switch **Part Number:** KA5H0380RTU  
**Manufacturer:** FAIRCHILD  

### **Specifications:**  
- **Type:** Switching Power Supply IC  
- **Topology:** Flyback Converter  
- **Input Voltage Range:** 85V to 265V AC  
- **Output Power:** Up to 23W (depends on design)  
- **Switching Frequency:** 100 kHz  
- **Output Voltage:** Adjustable (external components dependent)  
- **Current Sense Voltage:** 0.8V (typical)  
- **Maximum Duty Cycle:** 72%  
- **Operating Temperature Range:** -25°C to +85°C  
- **Package:** TO-220F (Insulated)  

### **Descriptions:**  
The KA5H0380RTU is a high-voltage power switching regulator IC designed for offline flyback converter applications. It integrates a high-voltage MOSFET and a PWM controller, making it suitable for compact power supply designs. It features built-in protections such as overcurrent, overvoltage, and thermal shutdown.  

### **Features:**  
- **Integrated High-Voltage MOSFET** (650V, 3A)  
- **Built-in Soft Start** for reduced inrush current  
- **Auto-Restart Protection** for overcurrent, overvoltage, and overtemperature  
- **Low Standby Power Consumption**  
- **Frequency Jittering** for reduced EMI  
- **Under-Voltage Lockout (UVLO)**  
- **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 precise design and application details.)

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