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UCC3809-1 from TI,Texas Instruments

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UCC3809-1

Manufacturer: TI

Economy Primary Side Controller

Partnumber Manufacturer Quantity Availability
UCC3809-1,UCC38091 TI 23 In Stock

Description and Introduction

Economy Primary Side Controller The UCC3809-1 is a low-power BiCMOS current-mode PWM controller manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 12V  
- **Operating Frequency:** Up to 1MHz  
- **Output Drive Current:** ±1A (peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Start-up Current:** 100µA (typical)  
- **Operating Temperature Range:** -40°C to 85°C  
- **Package Options:** SOIC-8, PDIP-8  

### **Descriptions:**  
The UCC3809-1 is designed for low-power DC-DC converter applications, featuring a current-mode control architecture for improved transient response and simplified loop compensation. It includes an integrated high-current totem-pole output driver, reducing the need for external components.  

### **Features:**  
- **Low Power Consumption:** Optimized for battery-powered applications.  
- **Current-Mode Control:** Enhances line and load regulation.  
- **Integrated Oscillator:** Adjustable frequency with external components.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation within voltage limits.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Leading-Edge Blanking:** Improves noise immunity in current sensing.  

This information is sourced from the official Texas Instruments datasheet for the UCC3809-1.

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