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UC2843BDG from ON,ON Semiconductor

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UC2843BDG

Manufacturer: ON

High Performance Current Mode Controllers

Partnumber Manufacturer Quantity Availability
UC2843BDG ON 182 In Stock

Description and Introduction

High Performance Current Mode Controllers The UC2843BDG is a high-performance current-mode PWM controller manufactured by ON Semiconductor. Below are its specifications, descriptions, and features based on factual information:

### **Specifications:**  
- **Manufacturer:** ON Semiconductor  
- **Type:** Current-Mode PWM Controller  
- **Topology:** Flyback, Forward, Boost, Buck  
- **Input Voltage (VCC):** 8.5V to 30V  
- **Output Frequency:** Up to 500 kHz  
- **Duty Cycle Range:** 0% to 100%  
- **Output Current (Source/Sink):** 1A (Peak)  
- **Reference Voltage:** 5V (±1%)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Descriptions:**  
The UC2843BDG is a fixed-frequency pulse-width modulation (PWM) controller optimized for high-performance DC-DC power supplies. It incorporates current-mode control for improved loop response and includes features like under-voltage lockout (UVLO), cycle-by-cycle current limiting, and a trimmed oscillator for precise frequency control.  

### **Features:**  
- **Current-Mode Operation:** Provides inherent line feedforward and cycle-by-cycle current limiting.  
- **Under-Voltage Lockout (UVLO):** Ensures proper start-up and shutdown behavior.  
- **Trimmed Oscillator:** Precise frequency control with external timing components.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  
- **Soft-Start Capability:** Reduces inrush current during start-up.  
- **Low Start-Up Current:** Typically 0.5mA.  
- **Error Amplifier:** High-gain bandwidth for tight regulation.  
- **Latch-Free Operation:** Allows immediate restart after fault removal.  

This information is strictly based on the manufacturer's datasheet and technical documentation.

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