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UCC3804N from UNITRODE

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UCC3804N

Manufacturer: UNITRODE

Low-Power BiCMOS Current-Mode PWM

Partnumber Manufacturer Quantity Availability
UCC3804N UNITRODE 2000 In Stock

Description and Introduction

Low-Power BiCMOS Current-Mode PWM The UCC3804N is a high-performance, low-power, current-mode PWM controller manufactured by UNITRODE. Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Operating Voltage Range:** 8.5V to 12V  
- **Maximum Duty Cycle:** 50%  
- **Switching Frequency:** Up to 1MHz  
- **Start-up Current:** 0.5mA (typical)  
- **Operating Current:** 2.5mA (typical)  
- **Output Drive Current:** ±1A (peak)  
- **Reference Voltage:** 5V (precision)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-Pin DIP (PDIP)  

### **Descriptions:**  
- The UCC3804N is a fixed-frequency, current-mode PWM controller optimized for low-power offline and DC-DC converter applications.  
- It includes an integrated high-current totem-pole output driver, reducing the need for external components.  
- Designed for efficiency in low-power applications, it features low start-up and operating currents.  

### **Features:**  
- **Current-Mode Control:** Enhances loop response and simplifies compensation.  
- **Precision 5V Reference:** Tight tolerance for stable regulation.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within voltage limits.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Pulse-by-Pulse Current Limiting:** Protects against overloads.  
- **50% Duty Cycle Clamp:** Prevents transformer saturation in flyback topologies.  
- **Low Power Consumption:** Suitable for energy-efficient designs.  

This information is based on UNITRODE's official documentation for the UCC3804N.

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