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UC1843J from TI,Texas Instruments

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UC1843J

Manufacturer: TI

Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UC1843J TI 400 In Stock

Description and Introduction

Current Mode PWM Controller The UC1843J is a PWM controller manufactured by Texas Instruments (TI). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** Texas Instruments (TI)  
- **Type:** Current Mode PWM Controller  
- **Package:** 8-Pin PDIP (Plastic Dual In-Line Package)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Input Voltage Range:** Up to 30V  
- **Output Current:** 200mA (Peak)  
- **Switching Frequency:** Up to 500kHz  
- **Duty Cycle Range:** 0% to 100%  

### **Descriptions:**
- The UC1843J is a high-performance fixed-frequency current-mode PWM controller.  
- It is designed for offline and DC-to-DC converter applications.  
- Features include precise duty cycle control, current sensing, and thermal shutdown protection.  
- Suitable for power supply control in industrial, automotive, and consumer electronics.  

### **Features:**
- **Current-Mode Operation:** Improved loop response and simplified feedback compensation.  
- **Automatic Feed-Forward Compensation:** Ensures consistent performance over input voltage variations.  
- **Under-Voltage Lockout (UVLO):** Ensures proper startup and shutdown.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  
- **Internal Trimmed Bandgap Reference:** Provides stable voltage regulation.  
- **Pulse-by-Pulse Current Limiting:** Enhances system protection.  
- **Double-Pulse Suppression:** Prevents multiple pulses in a single switching cycle.  

This information is based solely on the manufacturer's datasheet and technical documentation.

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