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UC3843ANG4 from TEXAS

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16.113ms

UC3843ANG4

Manufacturer: TEXAS

Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UC3843ANG4 TEXAS 11 In Stock

Description and Introduction

Current Mode PWM Controller The UC3843ANG4 is a high-performance current-mode PWM controller manufactured by Texas Instruments.  

### **Specifications:**  
- **Input Voltage Range:** 7.6V to 30V  
- **Operating Frequency:** Up to 500kHz  
- **Output Duty Cycle:** 0% to 100%  
- **Peak Output Current:** ±1A (sink/source)  
- **Reference Voltage:** 5V (±1% accuracy)  
- **Low Startup Current:** <1mA  
- **Undervoltage Lockout (UVLO):** 7.6V (on) / 7.2V (off)  
- **Package:** 8-Pin PDIP (Plastic Dual In-Line Package)  

### **Descriptions:**  
The UC3843ANG4 is designed for DC-DC converter applications, providing precise control for switching power supplies. It features an adjustable oscillator, error amplifier, current sensing comparator, and a totem-pole output driver.  

### **Features:**  
- **Current-Mode Control:** Improves loop response and simplifies compensation.  
- **Auto Feed-Forward Compensation:** Enhances line regulation.  
- **Latching PWM:** Ensures single-pulse operation per cycle.  
- **Internal Trimmed Reference:** Reduces external component count.  
- **High-Current Totem-Pole Output:** Directly drives power MOSFETs.  
- **Low Power Consumption:** Suitable for battery-powered applications.  

This device is widely used in offline and DC-DC power supplies, battery chargers, and LED drivers.

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