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UC2843AD8 from UC

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15.625ms

UC2843AD8

Manufacturer: UC

Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UC2843AD8 UC 700 In Stock

Description and Introduction

Current Mode PWM Controller The UC2843AD8 is a high-performance current-mode PWM controller manufactured by Texas Instruments.  

### **Key Specifications:**  
- **Input Voltage Range:** 8.5V to 30V (start-up), 7.6V to 30V (operating)  
- **Output Current:** Up to 1A (peak)  
- **Switching Frequency:** Up to 500kHz  
- **Duty Cycle Range:** 0% to 100%  
- **Reference Voltage:** 5V (±1%)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-Pin SOIC (D8)  

### **Descriptions:**  
The UC2843AD8 is designed for offline and DC-DC converter applications, providing precise control with current-mode operation. It features an under-voltage lockout (UVLO) with hysteresis, ensuring stable operation.  

### **Features:**  
- **Current-Mode Control:** Enhances loop response and simplifies compensation.  
- **Auto-Restart Protection:** Latch-free operation with cycle-by-cycle current limiting.  
- **Internal Trimmed Bandgap Reference:** Ensures stable 5V output.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Low Startup Current (≤1mA):** Improves efficiency in standby mode.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  

This IC is widely used in power supply designs, including flyback, forward, and boost converters.

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