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UCC3803D from UC

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UCC3803D

Manufacturer: UC

Low-Power BiCMOS Current-Mode PWM

Partnumber Manufacturer Quantity Availability
UCC3803D UC 1630 In Stock

Description and Introduction

Low-Power BiCMOS Current-Mode PWM The UCC3803D is a high-performance current-mode PWM controller manufactured by Texas Instruments (formerly Unitrode).  

### **Key Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Input Voltage Range:** Up to 30V (VCC)  
- **Operating Frequency:** Adjustable up to 1MHz  
- **Output Drive Current:** ±1.5A (peak)  
- **Duty Cycle Range:** 0% to 100% (adjustable)  
- **Startup Current:** Typically 0.5mA  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Descriptions & Features:**  
- **Current-Mode Control:** Provides improved loop response and simplified compensation.  
- **Programmable Soft-Start:** Reduces inrush current during startup.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within safe voltage limits.  
- **High-Frequency Operation:** Supports switching frequencies up to 1MHz.  
- **Low Startup Current:** Enables efficient power supply designs.  
- **Error Amplifier:** Includes a high-gain transconductance amplifier for feedback control.  
- **Synchronization Capability:** Allows external clock synchronization.  
- **Protection Features:** Includes cycle-by-cycle current limiting and thermal shutdown.  

The UCC3803D is commonly used in offline and DC-DC power supplies, battery chargers, and other switch-mode power applications.

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