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UCC28C45D from TI,Texas Instruments

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UCC28C45D

Manufacturer: TI

BiCMOS Low-Power Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UCC28C45D TI 440 In Stock

Description and Introduction

BiCMOS Low-Power Current Mode PWM Controller The UCC28C45D is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Input Voltage Range:** 8.5V to 21V  
- **Operating Frequency:** Up to 1MHz  
- **Output Current (Source/Sink):** 1A (Peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Error Amplifier Bandwidth:** 5MHz  
- **UVLO (Undervoltage Lockout):** 8.5V (on), 7.6V (off)  
- **Package:** SOIC-8  

### **Descriptions and Features:**  
- **Current-Mode Control:** Provides cycle-by-cycle current limiting and improved transient response.  
- **Programmable Frequency:** Adjustable via external resistor and capacitor.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Internal Leading-Edge Blanking:** Improves noise immunity in current sensing.  
- **Synchronization Capability:** Allows synchronization to an external clock.  
- **Low Startup Current:** Typically 0.5mA for efficient operation.  
- **High-Speed PWM Comparator:** Enables fast response to load transients.  
- **Wide Operating Temperature Range:** -40°C to 125°C.  

This device is commonly used in power supply applications, including DC-DC converters, AC-DC adapters, and industrial power systems.

Partnumber Manufacturer Quantity Availability
UCC28C45D TI/UNITRODE 99 In Stock

Description and Introduction

BiCMOS Low-Power Current Mode PWM Controller The UCC28C45D is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI)/Unitrode.  

### **Key Specifications:**  
- **Output Configuration:** Push-Pull  
- **Topology:** Flyback, Forward, Boost, Buck  
- **Switching Frequency:** Up to 1 MHz  
- **Operating Voltage (VCC):** 8.5V to 18V  
- **Duty Cycle Max:** 50%  
- **Output Current (Source/Sink):** 1A (Peak)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Descriptions and Features:**  
- **Current-Mode Control:** Provides cycle-by-cycle current limiting for improved transient response.  
- **Programmable Switching Frequency:** Adjustable up to 1 MHz for optimized power supply designs.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within the specified voltage range.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Error Amplifier:** High-gain bandwidth for precise regulation.  
- **Low Startup Current:** Typically 0.5 mA for efficient power-up.  
- **Synchronization Capability:** Allows synchronization to an external clock signal.  
- **Protection Features:** Includes overcurrent protection and thermal shutdown.  

This PWM controller is commonly used in DC-DC converters, power supplies, and industrial applications requiring high efficiency and reliability.

Partnumber Manufacturer Quantity Availability
UCC28C45D 225 In Stock

Description and Introduction

BiCMOS Low-Power Current Mode PWM Controller The UCC28C45D is a high-performance current-mode PWM controller manufactured by Texas Instruments.  

### **Specifications:**  
- **Input Voltage Range:** 8.5V to 21V  
- **Switching Frequency:** Up to 1MHz  
- **Output Current (Source/Sink):** 1A (Peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Operating Temperature Range:** -40°C to 125°C  
- **Package:** SOIC-8  

### **Descriptions:**  
- Designed for offline and DC-DC power supplies.  
- Features high-speed switching and low startup current.  
- Includes under-voltage lockout (UVLO) protection.  
- Optimized for flyback, forward, and boost converters.  

### **Features:**  
- **Current-Mode Control:** Improves loop response and simplifies compensation.  
- **Programmable Soft-Start:** Reduces inrush current.  
- **Leading-Edge Blanking:** Enhances noise immunity.  
- **Low Startup Current:** Typically 0.5mA.  
- **Internal Adjustable Line Undervoltage Lockout (UVLO).**  
- **Totem-Pole Output:** Supports fast MOSFET switching.  

This information is based on the manufacturer's datasheet.

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