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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.

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.

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