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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.

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.

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