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UC3844D8G4 from TI,Texas Instruments

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31.006ms

UC3844D8G4

Manufacturer: TI

Current-Mode PWM Controller 8-SOIC 0 to 70

Partnumber Manufacturer Quantity Availability
UC3844D8G4 TI 117 In Stock

Description and Introduction

Current-Mode PWM Controller 8-SOIC 0 to 70 The UC3844D8G4 is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Output Type:** Transistor Driver  
- **Topology:** Boost, Flyback, Forward  
- **Output Configuration:** Positive  
- **Duty Cycle (Max):** 50%  
- **Supply Voltage (Vcc/Vdd):** 8.4V to 30V  
- **Operating Temperature:** -40°C to +85°C  
- **Package:** 8-SOIC  
- **Switching Frequency:** Up to 500kHz  
- **Current - Startup:** 0.5mA  
- **Fault Protection:** Overcurrent  

### **Descriptions:**  
The UC3844D8G4 is designed for DC-DC converter applications, featuring precise duty cycle control and high-speed switching. It includes an oscillator, error amplifier, current sensing comparator, and a totem-pole output stage.  

### **Features:**  
- **Current-Mode Operation** for improved loop response  
- **Automatic Feed-Forward Compensation**  
- **Latching PWM** for cycle-by-cycle current limiting  
- **Undervoltage Lockout (UVLO)** with hysteresis  
- **High-Current Totem-Pole Output** (1A peak)  
- **Internal Trimmed Bandgap Reference** for accuracy  
- **Low Startup and Operating Current**  

This device is commonly used in power supply designs, including offline and DC-DC converters.  

(Source: Texas Instruments Datasheet)

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