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UCC3803DTRG4 from TI,Texas Instruments

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15.625ms

UCC3803DTRG4

Manufacturer: TI

Low-Power BiCMOS Current-Mode PWM 8-SOIC 0 to 70

Partnumber Manufacturer Quantity Availability
UCC3803DTRG4 TI 2200 In Stock

Description and Introduction

Low-Power BiCMOS Current-Mode PWM 8-SOIC 0 to 70 The UCC3803DTRG4 is a high-performance, low-power current-mode PWM controller manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Control Method:** Current-Mode PWM  
- **Topology:** Flyback, Forward  
- **Switching Frequency:** Up to 1MHz  
- **Operating Voltage Range:** 8.5V to 12V  
- **UVLO (Undervoltage Lockout):** 8.5V (turn-on), 7.6V (turn-off)  
- **Maximum Duty Cycle:** 50%  
- **Output Current (Source/Sink):** 1A (peak)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Descriptions:**  
The UCC3803DTRG4 is designed for high-frequency DC-DC power conversion applications. It provides precise current-mode control with built-in protections, including undervoltage lockout (UVLO) and cycle-by-cycle current limiting.  

### **Features:**  
- **Current-Mode Control:** Improves transient response and simplifies loop compensation.  
- **50% Duty Cycle Limitation:** Ensures transformer reset in forward converters.  
- **Low Startup Current:** Reduces power dissipation during startup.  
- **High-Frequency Operation:** Supports switching frequencies up to 1MHz.  
- **Integrated Soft-Start:** Reduces inrush current during startup.  
- **Cycle-by-Cycle Current Limiting:** Enhances system reliability.  

This device is commonly used in AC/DC adapters, power supplies, and isolated DC-DC converters.  

(Source: Texas Instruments Datasheet)

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