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UC2843D from MSC

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UC2843D

Manufacturer: MSC

CURRENT MODE PWM CONTROLLER

Partnumber Manufacturer Quantity Availability
UC2843D MSC 84 In Stock

Description and Introduction

CURRENT MODE PWM CONTROLLER The UC2843D is a high-performance current-mode PWM controller manufactured by MSC (Microsemi Corporation).  

### **Specifications:**  
- **Topology:** Current-mode PWM control  
- **Input Voltage Range:** Up to 30V (Vcc)  
- **Operating Frequency:** Up to 500kHz  
- **Output Drive Current:** ±1A (peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Reference Voltage:** 5V (±1% tolerance)  
- **Start-Up Current:** <1mA  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8 (D)  

### **Descriptions:**  
The UC2843D is designed for offline and DC-DC converter applications, providing precise control over switching power supplies. It features an integrated oscillator, error amplifier, current sensing comparator, and a high-current totem-pole output for driving power MOSFETs.  

### **Features:**  
- **Current-Mode Operation:** Improves loop response and simplifies compensation.  
- **Under-Voltage Lockout (UVLO):** Ensures proper start-up and shutdown.  
- **Soft-Start Capability:** Reduces inrush current.  
- **Pulse-by-Pulse Current Limiting:** Enhances system reliability.  
- **Trimmed Oscillator Discharge Current:** Tight frequency control.  
- **Low Power Consumption:** Optimized for efficiency.  

This IC is commonly used in power supply designs, battery chargers, and industrial applications requiring robust PWM control.

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