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UCC28C44DGK from TI/UNITRODE,Texas Instruments

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UCC28C44DGK

Manufacturer: TI/UNITRODE

BiCMOS Low-Power Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UCC28C44DGK TI/UNITRODE 10 In Stock

Description and Introduction

BiCMOS Low-Power Current Mode PWM Controller The UCC28C44DGK is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI) under the UNITRODE brand.  

### **Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Input Voltage Range:** 8.4V to 35V (start-up), 7.6V to 35V (operating)  
- **Output Drive Current:** ±1A (peak)  
- **Switching Frequency:** Up to 1MHz  
- **Duty Cycle Range:** 0% to 100%  
- **Operating Temperature Range:** -40°C to +105°C  
- **Package:** 8-pin VSSOP (DGK)  

### **Descriptions and Features:**  
- **Current-Mode Control:** Provides improved transient response and simplified loop compensation.  
- **Programmable Switching Frequency:** Allows flexibility in design.  
- **Under-Voltage Lockout (UVLO):** Ensures reliable operation within specified voltage ranges.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Error Amplifier:** Features high gain-bandwidth for precise regulation.  
- **Synchronization Capability:** Can be synchronized to an external clock.  
- **Low Startup and Operating Current:** Enhances efficiency.  
- **Protection Features:** Includes cycle-by-cycle current limiting and hiccup-mode protection.  

This controller is commonly used in power supply applications such as AC/DC converters, DC/DC converters, and offline power supplies.  

Would you like additional details on any specific parameter?

Partnumber Manufacturer Quantity Availability
UCC28C44DGK TI 1204 In Stock

Description and Introduction

BiCMOS Low-Power Current Mode PWM Controller The UCC28C44DGK is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Input Voltage (VCC):** 8.5V to 18V  
- **Operating Frequency:** Up to 1MHz  
- **Output Current (Source/Sink):** 1A (Peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Error Amplifier Bandwidth:** 5MHz  
- **Propagation Delay:** 50ns  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** VSSOP-8 (DGK)  

### **Descriptions:**  
The UCC28C44DGK is designed for high-frequency switching power supplies, offering precise control with current-mode operation. It includes features like under-voltage lockout (UVLO), cycle-by-cycle current limiting, and a totem-pole output stage for driving power MOSFETs efficiently.  

### **Features:**  
- **Current-Mode Control:** Improves loop response and simplifies compensation.  
- **Programmable Oscillator:** Adjustable frequency up to 1MHz.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within voltage range.  
- **High-Current Totem-Pole Output:** Directly drives MOSFETs.  
- **Low Startup Current:** Reduces power consumption.  
- **Cycle-by-Cycle Current Limiting:** Enhances system protection.  

This device is commonly used in AC/DC converters, DC/DC power supplies, and industrial power systems.

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