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UC3844DR2 from MOT,Motorola

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15.625ms

UC3844DR2

Manufacturer: MOT

High Performance Current Mode Controller

Partnumber Manufacturer Quantity Availability
UC3844DR2 MOT 776 In Stock

Description and Introduction

High Performance Current Mode Controller The UC3844DR2 is a current-mode PWM controller manufactured by Motorola (MOT). Below are the factual specifications, descriptions, and features of the UC3844DR2:  

### **Manufacturer:**  
- **MOT (Motorola)**  

### **Specifications:**  
- **Type:** Current-Mode PWM Controller  
- **Topology:** Flyback, Forward, Boost, Buck  
- **Output Configuration:** Single  
- **Output Type:** Totem Pole  
- **Number of Outputs:** 1  
- **Switching Frequency:** Up to 500 kHz  
- **Duty Cycle (Max):** 50%  
- **Supply Voltage (Vcc):** 8.5V to 30V  
- **Supply Current (Max):** 11mA  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Descriptions:**  
- The UC3844DR2 is a high-performance fixed-frequency current-mode PWM controller.  
- It is designed for DC-DC converter applications and provides precise duty cycle control.  
- Includes an oscillator, error amplifier, current sensing comparator, and a totem-pole output stage.  
- Features under-voltage lockout (UVLO) with hysteresis for reliable start-up.  

### **Features:**  
- **Current-Mode Operation:** Provides cycle-by-cycle current limiting.  
- **Automatic Feed-Forward Compensation:** Improves line regulation.  
- **Latching PWM:** Ensures single-pulse operation per cycle.  
- **Under-Voltage Lockout (UVLO):** Ensures proper start-up and shutdown.  
- **High-Current Totem-Pole Output:** Directly drives power MOSFETs.  
- **Adjustable Oscillator Frequency:** Allows flexible design.  
- **Low Start-Up Current:** Typically 0.5mA.  

This information is sourced from the manufacturer's datasheet and technical documentation.

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