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UC2854BQ from UNITRODE

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15.625ms

UC2854BQ

Manufacturer: UNITRODE

Enhanced High Power Factor Preregulator

Partnumber Manufacturer Quantity Availability
UC2854BQ UNITRODE 140 In Stock

Description and Introduction

Enhanced High Power Factor Preregulator The UC2854BQ is a high-performance, current-mode PWM controller manufactured by UNITRODE.  

### **Specifications:**  
- **Topology:** Current-mode PWM control  
- **Operating Frequency:** Up to 1MHz  
- **Input Voltage Range:** 15V to 35V (VCC)  
- **Output Drive Current:** 1A (peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Error Amplifier Bandwidth:** 3MHz  
- **Soft-Start Capability:** Yes  
- **Undervoltage Lockout (UVLO):** Yes  
- **Current Sense Input:** Yes  
- **Package:** 16-pin DIP (Dual In-line Package)  

### **Descriptions & Features:**  
- Designed for high-frequency switching power supplies.  
- Includes a precision voltage reference (±1% accuracy).  
- Features cycle-by-cycle current limiting for protection.  
- Integrated error amplifier for feedback control.  
- Adjustable oscillator frequency with external components.  
- Low startup and operating current for efficiency.  
- Suitable for flyback, forward, and boost converters.  
- Robust protection features including UVLO and soft-start.  

The UC2854BQ is commonly used in AC/DC and DC/DC power supply applications requiring high efficiency and reliability.

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