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UC3847DW from UNITRODE

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UC3847DW

Manufacturer: UNITRODE

Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UC3847DW UNITRODE 775 In Stock

Description and Introduction

Current Mode PWM Controller The UC3847DW is a pulse width modulation (PWM) controller IC manufactured by UNITRODE. Below are its specifications, descriptions, and features based on factual information:  

### **Specifications:**  
- **Manufacturer:** UNITRODE  
- **Package:** SOIC-16 (DW suffix indicates wide-body SOIC package)  
- **Operating Voltage Range:** 8.5V to 30V  
- **Output Current:** Up to 1A (peak)  
- **Switching Frequency:** Adjustable up to 500kHz  
- **Duty Cycle Range:** 0% to 100%  
- **Error Amplifier Bandwidth:** 1MHz  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
- The UC3847DW is a high-performance current-mode PWM controller designed for power supply applications.  
- It provides precise control over switching power supplies with features like adjustable frequency, soft-start, and current limiting.  
- The IC is commonly used in flyback, forward, and boost converters.  

### **Features:**  
- **Current-Mode Operation:** Improves loop response and simplifies compensation.  
- **Adjustable Oscillator Frequency:** Allows flexibility in design.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within voltage limits.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  
- **Error Amplifier with Reference:** Provides stable feedback control.  
- **Pulse-by-Pulse Current Limiting:** Protects the circuit from overcurrent conditions.  

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

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