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UC2843BNG from DIP8

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UC2843BNG

Manufacturer: DIP8

High Performance Current Mode Controllers

Partnumber Manufacturer Quantity Availability
UC2843BNG DIP8 50120 In Stock

Description and Introduction

High Performance Current Mode Controllers The UC2843BNG is a high-performance current-mode PWM controller manufactured by Texas Instruments, available in a DIP8 package.  

### **Specifications:**  
- **Package:** DIP8 (8-pin Dual In-line Package)  
- **Topology:** Current-mode PWM control  
- **Operating Frequency:** Up to 500 kHz  
- **Output Duty Cycle:** 0% to 100%  
- **Supply Voltage (Vcc):** 8V to 30V (start-up voltage typically 16V)  
- **Output Current (Source/Sink):** ±1A (peak)  
- **Error Amplifier Bandwidth:** 1 MHz  
- **Undervoltage Lockout (UVLO):** 8V (on) / 7.6V (off)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The UC2843BNG is designed for offline and DC-DC converter applications, providing precise duty cycle control with current-mode operation. It includes features like cycle-by-cycle current limiting, adjustable oscillator frequency, and a totem-pole output for driving power MOSFETs.  

### **Features:**  
- **Current-Mode Operation:** Improves loop response and simplifies compensation.  
- **Automatic Feed-Forward Compensation:** Enhances line regulation.  
- **Latching PWM:** Ensures cycle-by-cycle current limiting.  
- **Internal Trimmed Bandgap Reference:** Provides stable 5V reference (±1% accuracy).  
- **Soft-Start Capability:** Reduces inrush current.  
- **High-Current Totem-Pole Output:** Directly drives MOSFETs.  
- **Low Start-Up Current (<1mA):** Reduces power consumption during start-up.  

This IC is commonly used in power supplies, battery chargers, and flyback converters.

Application Scenarios & Design Considerations

High Performance Current Mode Controllers
Partnumber Manufacturer Quantity Availability
UC2843BNG ON 514 In Stock

Description and Introduction

High Performance Current Mode Controllers The UC2843BNG is a high-performance current-mode PWM controller manufactured by ON Semiconductor.  

### **Specifications:**  
- **Topology:** Current-mode PWM control  
- **Operating Frequency:** Up to 500 kHz  
- **Input Voltage Range (VCC):** 8.5V to 30V (start-up voltage ~16V)  
- **Output Drive Current:** ±1A (peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Error Amplifier Bandwidth:** 1 MHz  
- **Reference Voltage (VREF):** 5V ±1%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** PDIP-8 (DIP-8)  

### **Descriptions:**  
The UC2843BNG is designed for offline and DC-DC converter applications, providing precise control over switching power supplies. It features a trimmed oscillator for accurate duty cycle control, current sensing with cycle-by-cycle current limiting, and a totem-pole output for driving power MOSFETs.  

### **Features:**  
- **Current-Mode Operation:** Improves loop response and simplifies compensation.  
- **Automatic Feed-Forward Compensation:** Enhances line regulation.  
- **Latching PWM:** Ensures single-pulse response per clock cycle.  
- **Undervoltage Lockout (UVLO):** Ensures proper start-up and shutdown.  
- **Internal Soft-Start:** Reduces inrush current during start-up.  
- **High-Current Totem-Pole Output:** Directly drives power MOSFETs.  
- **Low Startup and Operating Current:** Suitable for low-power applications.  

This device is commonly used in power supplies, battery chargers, and industrial control systems.

Application Scenarios & Design Considerations

High Performance Current Mode Controllers

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