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UC2844AQD8 from TI,Texas Instruments

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UC2844AQD8

Manufacturer: TI

Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UC2844AQD8 TI 32 In Stock

Description and Introduction

Current Mode PWM Controller The UC2844AQD8 is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Input Voltage (VCC):** 8.4V to 30V (operating), 7.9V (UVLO on), 7.5V (UVLO off)  
- **Output Current (Peak):** ±1A  
- **Switching Frequency:** Up to 500kHz  
- **Duty Cycle Range:** 0% to 100%  
- **Error Amplifier Gain Bandwidth:** 1MHz  
- **Operating Temperature Range:** -40°C to +105°C  
- **Package:** SOIC-8  

### **Descriptions:**  
The UC2844AQD8 is designed for offline and DC-DC converter applications. It provides precise duty cycle control with current-mode operation, improving loop response and simplifying compensation. It includes features like under-voltage lockout (UVLO), cycle-by-cycle current limiting, and a trimmed oscillator for accurate frequency control.  

### **Features:**  
- **Current-Mode Operation** for improved transient response  
- **Automatic Feed-Forward Compensation**  
- **Latching PWM for Cycle-by-Cycle Current Limiting**  
- **Internal Trimmed Bandgap Reference (5V ±1%)**  
- **High-Current Totem Pole Output** (±1A peak)  
- **Undervoltage Lockout (UVLO)** with hysteresis  
- **Low Startup and Operating Current**  
- **500kHz Oscillator with Sync Capability**  

This device is commonly used in power supply designs, including flyback, forward, and boost converters.  

Would you like additional details on any specific parameter?

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