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UC2854BDWG4 from TI/BB,Texas Instruments

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15.625ms

UC2854BDWG4

Manufacturer: TI/BB

Enhanced High Power Factor Preregulator 16-SOIC -40 to 85

Partnumber Manufacturer Quantity Availability
UC2854BDWG4 TI/BB 6 In Stock

Description and Introduction

Enhanced High Power Factor Preregulator 16-SOIC -40 to 85 The UC2854BDWG4 is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI)/Burr-Brown (BB).  

### **Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Input Voltage Range:** Up to 35V  
- **Operating Frequency:** Adjustable up to 1MHz  
- **Output Drive Current:** ±2A 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 UC2854BDWG4 is designed for high-frequency switching power supplies, providing precise regulation and fast transient response. It features a high-speed error amplifier, current sensing, and a totem-pole output stage for driving power MOSFETs efficiently.  

### **Features:**  
- **Current-Mode Control:** Enhances loop response and simplifies compensation.  
- **Programmable Oscillator:** Allows frequency adjustment via external components.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation under low-voltage conditions.  
- **Cycle-by-Cycle Current Limiting:** Protects against overloads.  
- **High Noise Immunity:** Robust operation in noisy environments.  

This controller is commonly used in AC/DC converters, DC/DC power supplies, and industrial power systems.

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