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UC3842ADR2 from ON,ON Semiconductor

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UC3842ADR2

Manufacturer: ON

High Performance Current Mode Controller

Partnumber Manufacturer Quantity Availability
UC3842ADR2 ON 209 In Stock

Description and Introduction

High Performance Current Mode Controller The UC3842ADR2 is a high-performance current-mode PWM controller manufactured by ON Semiconductor.  

### **Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Input Voltage (VCC):** 16V (start-up), 10V (operating), 30V (max)  
- **Output Drive Current:** ±1A (peak)  
- **Switching Frequency:** Up to 500kHz  
- **Duty Cycle Range:** 0% to 100% (adjustable)  
- **Reference Voltage:** 5V (±1% tolerance)  
- **Error Amplifier Gain Bandwidth:** 1MHz  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Descriptions:**  
The UC3842ADR2 is designed for offline and DC-DC converter applications. It provides precise duty cycle control with current-mode operation for improved loop response and simplified feedback compensation.  

### **Features:**  
- **Current-Mode Control:** Enhances line and load regulation.  
- **Under-Voltage Lockout (UVLO):** Ensures proper start-up and shutdown.  
- **Trimmed Oscillator Discharge Current:** Allows precise frequency control.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  
- **Pulse-by-Pulse Current Limiting:** Protects against overloads.  
- **Low Start-Up & Operating Current:** Reduces power consumption.  
- **Auto Feed-Forward Compensation:** Improves transient response.  

This device is widely used in power supplies, battery chargers, and SMPS applications.

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