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UC2854BDWTR from TI,Texas Instruments

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UC2854BDWTR

Manufacturer: TI

Enhanced High Power Factor Preregulator

Partnumber Manufacturer Quantity Availability
UC2854BDWTR TI 8000 In Stock

Description and Introduction

Enhanced High Power Factor Preregulator The UC2854BDWTR is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Input Voltage Range:** Up to 35V  
- **Operating Frequency:** Adjustable up to 1MHz  
- **Output Drive Current:** ±1A (peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Error Amplifier Bandwidth:** 5MHz  
- **Start-Up Current:** 0.5mA (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-16 (DW)  

### **Descriptions:**  
The UC2854BDWTR is designed for high-efficiency power supply applications, featuring precise current-mode control for improved transient response and simplified loop compensation. It includes a high-speed error amplifier, an adjustable oscillator, and a high-current totem-pole output driver.  

### **Features:**  
- **Current-Mode Control:** Enhances loop stability and dynamic response.  
- **Programmable Soft-Start:** Reduces inrush current during startup.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation under low input voltage conditions.  
- **Cycle-by-Cycle Current Limiting:** Protects against overloads.  
- **Synchronous Capability:** Supports external clock synchronization.  
- **Low Power Consumption:** Optimized for efficiency.  

This device is commonly used in switch-mode power supplies (SMPS), DC-DC converters, and offline power applications.

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