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UC2844AQD8R from TI,Texas Instruments

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UC2844AQD8R

Manufacturer: TI

Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UC2844AQD8R TI 2300 In Stock

Description and Introduction

Current Mode PWM Controller The UC2844AQD8R is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Topology:** Current-Mode PWM Controller  
- **Input Voltage Range:** Up to 30V  
- **Operating Frequency:** Up to 500kHz  
- **Output Duty Cycle:** 0% to 50% (maximum)  
- **Output Current (Source/Sink):** 1A (peak)  
- **Reference Voltage:** 5V (with ±1% tolerance)  
- **Start-Up Current:** <1mA  
- **Operating Temperature Range:** -40°C to +105°C  
- **Package:** SOIC-8  

### **Descriptions:**  
The UC2844AQD8R is designed for offline and DC-DC converter applications, providing precise control for power supplies. It features an integrated oscillator, high-gain error amplifier, and current-sensing comparator for robust performance.  

### **Features:**  
- **Current-Mode Operation:** Improved loop response and simplified compensation.  
- **Automatic Feed-Forward Compensation:** Enhances line regulation.  
- **Latching PWM for Cycle-by-Cycle Current Limiting:** Ensures protection against overloads.  
- **Undervoltage Lockout (UVLO):** Ensures proper start-up and shutdown.  
- **Low Start-Up and Operating Current:** Improves efficiency.  
- **Totem-Pole Output:** Capable of driving power MOSFETs directly.  

This device is commonly used in flyback, forward, and boost converters.

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