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UC3864N from UC

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UC3864N

Manufacturer: UC

Resonant-Mode Power Supply Controllers

Partnumber Manufacturer Quantity Availability
UC3864N UC 50 In Stock

Description and Introduction

Resonant-Mode Power Supply Controllers The UC3864N is a high-performance resonant-mode controller manufactured by Texas Instruments. Below are the key specifications, descriptions, and features:

### **Specifications:**  
- **Manufacturer:** Texas Instruments  
- **Type:** Resonant-Mode Controller  
- **Package:** PDIP-16 (Plastic Dual In-Line Package)  
- **Operating Voltage Range:** 10V to 20V  
- **Frequency Range:** Up to 1MHz  
- **Output Current (Peak):** 1A (Source/Sink)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The UC3864N is designed for resonant-mode power conversion applications, providing precise control for zero-voltage switching (ZVS) and zero-current switching (ZCS) topologies. It integrates critical functions such as error amplification, soft-start, and fault protection, making it suitable for high-efficiency power supplies.  

### **Features:**  
- **Resonant-Mode Operation:** Optimized for ZVS/ZCS topologies.  
- **Programmable Frequency:** Adjustable oscillator for flexible design.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Error Amplifier:** High-gain bandwidth for tight regulation.  
- **Fault Protection:** Includes overcurrent and undervoltage lockout (UVLO).  
- **High-Current Output Drivers:** Capable of driving MOSFETs directly.  
- **Synchronization Input:** Allows external clock synchronization.  

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

Partnumber Manufacturer Quantity Availability
UC3864N UNITRODE 280 In Stock

Description and Introduction

Resonant-Mode Power Supply Controllers The UC3864N is a high-performance, fixed-frequency current-mode PWM controller manufactured by UNITRODE. Below are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Input Voltage Range:** 8V to 35V  
- **Output Drive Current:** 1A (peak)  
- **Switching Frequency:** Up to 1MHz  
- **Operating Temperature Range:** -40°C to +85°C  
- **Duty Cycle Range:** 0% to 100%  
- **Error Amplifier Bandwidth:** 5MHz  
- **Start-Up Current:** 0.5mA (typical)  

### **Descriptions:**  
- The UC3864N is designed for high-frequency power supply applications, providing precise control for switching regulators.  
- It features a current-mode control architecture for improved loop response and simplified compensation.  
- The device includes an onboard oscillator, error amplifier, and PWM comparator for efficient power conversion.  

### **Features:**  
- **Current-Mode Control:** Enhances transient response and simplifies feedback loop design.  
- **Programmable Oscillator:** Allows frequency adjustment with external components.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within the specified voltage range.  
- **High-Current Totem-Pole Output:** Directly drives power MOSFETs.  
- **Protection Features:** Includes cycle-by-cycle current limiting and latch-off for fault conditions.  

The UC3864N is commonly used in DC-DC converters, offline power supplies, and battery chargers.

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