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UC2844N/ from UC

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UC2844N/

Manufacturer: UC

HIGH PERFORMANCE CURRENT MODE CONTROLLERS

Partnumber Manufacturer Quantity Availability
UC2844N/,UC2844N UC 52 In Stock

Description and Introduction

HIGH PERFORMANCE CURRENT MODE CONTROLLERS The UC2844N is a high-performance current-mode PWM controller manufactured by Texas Instruments.  

### **Specifications:**  
- **Topology:** Current-mode PWM control  
- **Input Voltage Range (VCC):** 8.4V to 30V (operating), up to 36V (absolute max)  
- **Output Drive Current:** ±1A (peak)  
- **Switching Frequency:** Up to 500kHz  
- **Duty Cycle Range:** 0% to 100% (adjustable)  
- **Reference Voltage:** 5V (±1% accuracy)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-Pin DIP (PDIP) or SOIC  

### **Key Features:**  
- **Current-Mode Operation:** Provides cycle-by-cycle current limiting for improved transient response.  
- **Under-Voltage Lockout (UVLO):** Ensures proper startup with hysteresis (typically 1.6V).  
- **Programmable Oscillator:** Adjustable frequency via external resistor and capacitor.  
- **Error Amplifier:** High-gain bandwidth (1MHz) for precise voltage regulation.  
- **Soft-Start Capability:** Reduces startup stress on power components.  
- **Low Startup Current:** Typically 0.5mA for efficient operation.  
- **Totem-Pole Output:** Directly drives power MOSFETs or IGBTs.  

### **Applications:**  
- Switch-mode power supplies (SMPS)  
- DC-DC converters  
- Offline power supplies  
- Battery chargers  

This IC is widely used in power supply designs due to its reliability and flexibility in controlling switching regulators.

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