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UCC2803N from U (unitrode)

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UCC2803N

Manufacturer: U (unitrode)

Low-Power BiCMOS Current-Mode PWM

Partnumber Manufacturer Quantity Availability
UCC2803N U (unitrode) 50 In Stock

Description and Introduction

Low-Power BiCMOS Current-Mode PWM The UCC2803N is a PWM controller manufactured by Unitrode (now part of Texas Instruments). Below are its specifications, descriptions, and features based on factual information:  

### **Specifications:**  
- **Manufacturer:** Unitrode (U)  
- **Type:** Current Mode PWM Controller  
- **Topology:** Supports flyback, forward, and boost converters  
- **Operating Frequency:** Up to 500 kHz  
- **Output Drive Current:** ±1 A peak  
- **Supply Voltage (VCC):** 8.2 V to 35 V  
- **Duty Cycle Range:** 0% to 100%  
- **Soft-Start Capability:** Yes  
- **Error Amplifier Bandwidth:** 5 MHz  
- **Package:** 8-Pin DIP (PDIP)  

### **Descriptions:**  
The UCC2803N is a high-performance current-mode PWM controller designed for switching power supply applications. It provides precise regulation and protection features, making it suitable for offline and DC-DC converters.  

### **Features:**  
- **Current-Mode Control:** Improves loop response and simplifies compensation.  
- **Programmable Oscillator:** Allows frequency adjustment with external components.  
- **Undervoltage Lockout (UVLO):** Ensures proper startup and shutdown.  
- **Soft-Start:** Reduces inrush current during startup.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  
- **Internal Reference Voltage:** 5.1 V with ±1% accuracy.  
- **Pulse-by-Pulse Current Limiting:** Enhances system protection.  
- **Low Startup Current:** Typically 0.5 mA.  

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

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