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UCC38C43DGKRG4 from TI/BB,Texas Instruments

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UCC38C43DGKRG4

Manufacturer: TI/BB

BiCMOS Low-Power Current Mode PWM Controller 8-VSSOP 0 to 70

Partnumber Manufacturer Quantity Availability
UCC38C43DGKRG4 TI/BB 14 In Stock

Description and Introduction

BiCMOS Low-Power Current Mode PWM Controller 8-VSSOP 0 to 70 The UCC38C43DGKRG4 is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI)/Burr-Brown (BB).  

### **Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Input Voltage Range (VDD):** 8.5V to 12V (start-up), 7.6V (UVLO turn-off)  
- **Operating Frequency Range:** Up to 1MHz  
- **Output Drive Current:** ±1A (peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Error Amplifier Bandwidth:** 5MHz  
- **Propagation Delay:** 50ns  
- **Soft-Start Capability:** Yes  
- **Undervoltage Lockout (UVLO):** Adjustable  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** VSSOP-8 (DGK)  

### **Descriptions & Features:**  
- Designed for high-frequency DC-DC power supplies.  
- Includes a precision reference, error amplifier, oscillator, PWM comparator, and totem-pole output driver.  
- Current-mode control improves transient response and simplifies loop compensation.  
- Features cycle-by-cycle current limiting.  
- Low start-up and operating current for improved efficiency.  
- Adjustable dead-time control for optimal efficiency.  
- Suitable for flyback, forward, and boost converters.  

This device is optimized for offline and isolated power supply applications.

Application Scenarios & Design Considerations

BiCMOS Low-Power Current Mode PWM Controller 8-VSSOP 0 to 70
Partnumber Manufacturer Quantity Availability
UCC38C43DGKRG4 TEXAS 4556 In Stock

Description and Introduction

BiCMOS Low-Power Current Mode PWM Controller 8-VSSOP 0 to 70 The UCC38C43DGKRG4 is a high-performance current-mode PWM controller manufactured by Texas Instruments. Here are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Manufacturer:** Texas Instruments  
- **Type:** Current-Mode PWM Controller  
- **Output Type:** Totem Pole  
- **Topology:** Boost, Flyback, Forward  
- **Number of Outputs:** 1  
- **Switching Frequency:** Up to 1 MHz  
- **Duty Cycle (Max):** 100%  
- **Supply Voltage (Vcc):** 8.5V to 12V (Start-Up), 7.6V to 12V (Operating)  
- **Supply Current (Start-Up):** 0.5 mA (Typical)  
- **Supply Current (Operating):** 2.5 mA (Typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** VSSOP-8 (DGK)  

### **Descriptions:**  
- Designed for high-frequency DC-DC converter applications.  
- Features low start-up and operating currents for improved efficiency.  
- Includes under-voltage lockout (UVLO) protection.  
- Optimized for both isolated and non-isolated power supplies.  

### **Features:**  
- **Current-Mode Control:** Improves transient response and simplifies loop compensation.  
- **Programmable Oscillator:** Allows adjustable switching frequency.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Leading-Edge Blanking:** Improves noise immunity in current sensing.  
- **Low Power Consumption:** Enhances efficiency in standby modes.  
- **Synchronization Capability:** Allows synchronization to an external clock.  

This device is commonly used in power supply designs for industrial, telecom, and computing applications.

Application Scenarios & Design Considerations

BiCMOS Low-Power Current Mode PWM Controller 8-VSSOP 0 to 70

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