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UC3843AD8TR from UCC

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UC3843AD8TR

Manufacturer: UCC

Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UC3843AD8TR UCC 857 In Stock

Description and Introduction

Current Mode PWM Controller The UC3843AD8TR is a high-performance current-mode PWM controller manufactured by Texas Instruments (formerly Unitrode).  

### **Key Specifications:**  
- **Input Voltage Range:** 7.6V to 30V  
- **Operating Frequency:** Up to 500kHz  
- **Output Duty Cycle:** 0% to 100%  
- **Output Current (Source/Sink):** ±1A (peak)  
- **Reference Voltage:** 5V (±1% tolerance)  
- **Low Startup Current:** <1mA  
- **Package:** SOIC-8 (D8)  

### **Descriptions and Features:**  
- **Current-Mode Control:** Provides improved loop response and simplified compensation.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within the specified voltage range.  
- **Programmable Oscillator:** Allows frequency adjustment using external timing components.  
- **Error Amplifier:** Features high gain-bandwidth for precise regulation.  
- **Pulse-by-Pulse Current Limiting:** Enhances system protection.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Totem Pole Output:** Optimized for driving power MOSFETs.  
- **Wide Temperature Range:** -40°C to +85°C (operating).  

This IC is commonly used in **switch-mode power supplies (SMPS), DC-DC converters, and offline power controllers**.

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