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UC2854J from UC

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15.625ms

UC2854J

Manufacturer: UC

High Power Factor Preregulator

Partnumber Manufacturer Quantity Availability
UC2854J UC 164 In Stock

Description and Introduction

High Power Factor Preregulator The UC2854J is a high-performance current mode PWM controller manufactured by Texas Instruments.  

### **Specifications:**  
- **Input Voltage Range:** 15V to 30V (operating)  
- **Maximum Duty Cycle:** 100%  
- **Switching Frequency:** Up to 500 kHz  
- **Output Current (Source/Sink):** 1A (peak)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 16-pin DIP (PDIP)  

### **Descriptions:**  
The UC2854J is designed for high-efficiency power supply applications, featuring a current-mode control architecture for improved transient response and simplified loop compensation. It includes an onboard oscillator, error amplifier, and PWM comparator for precise regulation.  

### **Features:**  
- **Current-Mode Control:** Enhances loop stability and response.  
- **Programmable Oscillator:** Allows frequency adjustment via external components.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation within voltage limits.  
- **Error Amplifier:** Provides high gain-bandwidth for tight regulation.  
- **Totem-Pole Output:** Drives power MOSFETs or IGBTs efficiently.  

For detailed electrical characteristics and application notes, refer to the official Texas Instruments datasheet.

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