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UC3843BD1013TR from ST,ST,ST Microelectronics

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UC3843BD1013TR

Manufacturer: ST,ST

HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER

Partnumber Manufacturer Quantity Availability
UC3843BD1013TR ST,ST 5000 In Stock

Description and Introduction

HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER The UC3843BD1013TR is a current-mode PWM controller manufactured by STMicroelectronics (ST).  

### **Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Input Voltage (VCC):** 8.5V to 30V (start-up voltage ~16V)  
- **Output Duty Cycle:** Up to 100%  
- **Switching Frequency:** Up to 500kHz  
- **Output Current (Peak):** 1A (source/sink)  
- **Reference Voltage:** 5V (±1% accuracy)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SO-8  

### **Descriptions:**  
The UC3843BD1013TR is designed for DC-DC converter applications, providing precise control of switching power supplies. It features a trimmed oscillator for accurate duty cycle control, current sensing, and a totem-pole output stage for driving power MOSFETs.  

### **Features:**  
- **Current-Mode Operation:** Ensures cycle-by-cycle current limiting.  
- **Undervoltage Lockout (UVLO):** Ensures proper start-up and shutdown.  
- **Adjustable Oscillator Frequency:** Set by external components.  
- **Error Amplifier:** Provides feedback loop stability.  
- **Soft-Start Capability:** Reduces inrush current.  
- **Latch-Free Operation:** Enhances reliability.  

This IC is commonly used in power supplies, battery chargers, and LED drivers.

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