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UC2854AN from TI,Texas Instruments

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UC2854AN

Manufacturer: TI

Enhanced High Power Factor Preregulator

Partnumber Manufacturer Quantity Availability
UC2854AN TI 2200 In Stock

Description and Introduction

Enhanced High Power Factor Preregulator The UC2854AN is a high-performance current mode PWM controller manufactured by Texas Instruments (TI). Below are its specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 15V to 35V  
- **Operating Frequency:** Up to 1MHz  
- **Output Current (Source/Sink):** 1A (Peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Error Amplifier Bandwidth:** 5MHz  
- **Start-up Supply Current:** <1mA  
- **Soft-Start Capability:** Yes  
- **Undervoltage Lockout (UVLO):** Adjustable  
- **Package:** 16-Pin PDIP (Plastic Dual In-Line Package)  

### **Descriptions:**  
- The UC2854AN is designed for high-frequency switching power supply applications.  
- It operates in current mode control, improving loop response and simplifying compensation.  
- Features include programmable soft-start, cycle-by-cycle current limiting, and undervoltage lockout.  
- Suitable for flyback, forward, and boost converter topologies.  

### **Features:**  
- **Current Mode Control:** Enhances transient response and simplifies feedback loop design.  
- **Programmable Oscillator:** Allows flexible frequency setting with external components.  
- **Precision Reference Voltage:** 5V ±1% for accurate regulation.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  
- **Protection Features:** Includes undervoltage lockout, overcurrent protection, and soft-start.  
- **Wide Operating Temperature Range:** -40°C to +85°C.  

This information is based on the manufacturer's datasheet for the UC2854AN.

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