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UC1866 from UN

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UC1866

Manufacturer: UN

Resonant-Mode Power Supply Controllers

Partnumber Manufacturer Quantity Availability
UC1866 UN 28 In Stock

Description and Introduction

Resonant-Mode Power Supply Controllers The UC1866 is a high-speed PWM controller manufactured by Unitrode (now part of Texas Instruments). Below are the factual details about the UC1866 based on its specifications, descriptions, and features:

### **Manufacturer:**  
- **Unitrode Corporation** (acquired by Texas Instruments).  

### **UN Specifications:**  
- The UC1866 is designed for high-frequency pulse-width modulation (PWM) applications.  
- It operates with a fixed frequency and provides precise duty cycle control.  

### **Descriptions:**  
- The UC1866 is a voltage-mode PWM controller optimized for high-speed switching power supplies.  
- It includes an onboard oscillator, error amplifier, PWM comparator, and output drivers.  
- Suitable for forward, flyback, and push-pull converter topologies.  

### **Features:**  
- **High-Speed Operation:** Supports switching frequencies up to **1 MHz**.  
- **Precision Reference:** Internal **5.1V** ±1% bandgap reference.  
- **Adjustable Dead-Time Control:** Allows optimization of power stage efficiency.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within supply voltage range.  
- **Dual Output Drivers:** Capable of sourcing/sinking **±2A** peak current.  
- **Wide Supply Range:** Operates from **8V to 35V**.  
- **Temperature Range:** **-55°C to +125°C** (military-grade versions available).  

For exact electrical characteristics and application circuits, refer to the official **UC1866 datasheet** from Texas Instruments.

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