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UCC28C45DRG4 from TI,Texas Instruments

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UCC28C45DRG4

Manufacturer: TI

BiCMOS Low-Power Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UCC28C45DRG4 TI 5000 In Stock

Description and Introduction

BiCMOS Low-Power Current Mode PWM Controller The UCC28C45DRG4 is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Input Voltage (VDD):** 8.5V to 21V (operating)  
- **Output Frequency Range:** Up to 1MHz  
- **Duty Cycle Range:** 0% to 100%  
- **Peak Output Current (Source/Sink):** 1A / 1A  
- **Switching Frequency (Adjustable):** Yes (via external components)  
- **UVLO (Undervoltage Lockout):** 8.5V (turn-on), 7.6V (turn-off)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOIC-8  

### **Descriptions:**  
The UCC28C45DRG4 is designed for high-frequency power supply applications, offering precise control and protection features. It is optimized for efficiency and reliability in DC-DC converters, telecom, and industrial power systems.  

### **Features:**  
- **Current-Mode Control:** Enhances transient response and simplifies loop compensation.  
- **Programmable Switching Frequency:** Allows flexibility in design.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Cycle-by-Cycle Current Limiting:** Protects against overloads.  
- **Low Startup Current (150µA):** Improves efficiency at startup.  
- **Internal Leading-Edge Blanking:** Improves noise immunity in current sensing.  
- **Synchronous Rectification Support:** Optimized for modern power topologies.  

This device is suitable for offline and isolated power supplies, as well as point-of-load (POL) applications.  

(Source: Texas Instruments Datasheet)

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