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UC2843AD8TR from TI,Texas Instruments

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UC2843AD8TR

Manufacturer: TI

Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UC2843AD8TR TI 10000 In Stock

Description and Introduction

Current Mode PWM Controller The UC2843AD8TR is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Input Voltage Range:** Up to 30V  
- **Operating Frequency:** Up to 500kHz  
- **Output Current:** 1A (peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Reference Voltage:** 5V (precision)  
- **Package:** SOIC-8  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The UC2843AD8TR is designed for offline and DC-DC converter applications. It provides high-speed PWM control with features like cycle-by-cycle current limiting, under-voltage lockout (UVLO), and a trimmed oscillator for precise frequency control.  

### **Features:**  
- **Current-Mode Operation:** Improves loop response and simplifies compensation.  
- **Automatic Feed-Forward Compensation:** Enhances line regulation.  
- **Under-Voltage Lockout (UVLO):** Ensures proper startup and shutdown.  
- **Trimmed Oscillator:** Provides accurate frequency control.  
- **High-Current Totem Pole Output:** 1A peak drive capability.  
- **Soft-Start Capability:** Reduces inrush current.  
- **Low Startup and Operating Current:** Improves efficiency.  

This device is commonly used in power supply designs, including flyback, forward, and boost converters.

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