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UC2843N G4 from TI,Texas Instruments

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15.625ms

UC2843N G4

Manufacturer: TI

Current-Mode PWM Controller 8-PDIP -40 to 85

Partnumber Manufacturer Quantity Availability
UC2843N G4,UC2843NG4 TI 2 In Stock

Description and Introduction

Current-Mode PWM Controller 8-PDIP -40 to 85 The UC2843N G4 is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Input Voltage (VCC):** 8.5V to 30V  
- **Operating Frequency:** Up to 500kHz  
- **Output Current (Source/Sink):** ±1A (peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Error Amplifier Bandwidth:** 1MHz  
- **Start-Up Current:** <1mA  
- **Undervoltage Lockout (UVLO):** 8.4V (on), 7.6V (off)  
- **Package:** 8-Pin PDIP (Plastic Dual In-Line Package)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions and Features:**  
- **Current-Mode Control:** Provides cycle-by-cycle current limiting for improved transient response.  
- **Automatic Feed-Forward Compensation:** Simplifies loop stabilization.  
- **Latching PWM for Cycle-by-Cycle Current Limiting:** Enhances reliability in fault conditions.  
- **Internal Trimmed Bandgap Reference:** Ensures stable 5V reference (±1% accuracy).  
- **Undervoltage Lockout (UVLO):** Ensures proper start-up and shutdown behavior.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  
- **Low Start-Up and Operating Current:** Improves efficiency in standby modes.  

The UC2843N G4 is commonly used in switch-mode power supplies (SMPS), DC-DC converters, and offline power supplies.

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