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UCC38500N from U (unitrode)

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UCC38500N

Manufacturer: U (unitrode)

BiCMOS PFC/PWM Combination Controller

Partnumber Manufacturer Quantity Availability
UCC38500N U (unitrode) 36 In Stock

Description and Introduction

BiCMOS PFC/PWM Combination Controller The UCC38500N is a power factor correction (PFC) controller manufactured by Unitrode (now part of Texas Instruments). Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:  

### **Specifications:**  
- **Input Voltage Range:** Designed for universal AC input (85VAC to 265VAC).  
- **Output Voltage Regulation:** Typically used for boost PFC stages with output voltages up to 400V.  
- **Switching Frequency:** Adjustable, typically up to 200kHz.  
- **Operating Temperature Range:** -40°C to +85°C.  
- **Package:** 16-pin DIP (Dual In-line Package) or SOIC.  
- **Control Method:** Average current mode control for high power factor.  

### **Descriptions:**  
The UCC38500N is a high-performance PFC controller designed for active power factor correction in AC-DC power supplies. It integrates critical control functions to achieve near-unity power factor and low harmonic distortion. It is commonly used in offline power supplies, industrial systems, and lighting applications.  

### **Features:**  
- **Average Current Mode Control:** Ensures low input current distortion.  
- **Programmable Oscillator:** Allows adjustment of switching frequency.  
- **Overvoltage Protection (OVP):** Safeguards against excessive output voltage.  
- **Undervoltage Lockout (UVLO):** Ensures proper startup and shutdown.  
- **Soft-Start Function:** Reduces inrush current during startup.  
- **Multiplier/Divider Circuit:** Optimizes input current shaping.  
- **Low Startup Current:** Minimizes standby power consumption.  

This information is strictly factual from the available knowledge base. Let me know if you need further details.

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