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UC3844BVD1R2 from MOT,Motorola

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UC3844BVD1R2

Manufacturer: MOT

High Performance Current Mode Controller

Partnumber Manufacturer Quantity Availability
UC3844BVD1R2 MOT 44 In Stock

Description and Introduction

High Performance Current Mode Controller The UC3844BVD1R2 is a high-performance current-mode PWM controller manufactured by **ON Semiconductor (formerly part of Motorola, hence the "MOT" designation)**.  

### **Key Specifications:**  
- **Manufacturer:** ON Semiconductor (MOT)  
- **Type:** Current-Mode PWM Controller  
- **Output Configuration:** Single  
- **Topology:** Flyback, Forward, Boost  
- **Switching Frequency:** Up to 500 kHz  
- **Duty Cycle Max:** 50%  
- **Supply Voltage (VCC):** 8.5V to 30V  
- **Output Current:** 1A (Peak)  
- **Operating Temperature:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Features:**  
- **Current-Mode Control:** Provides improved loop response and simplified compensation.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within supply voltage limits.  
- **Trimmed Oscillator Discharge Current:** Enhances duty cycle control.  
- **Automatic Feed-Forward Compensation:** Improves line regulation.  
- **Latching PWM for Cycle-by-Cycle Current Limiting:** Protects against overloads.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  

This IC is widely used in **switch-mode power supplies (SMPS), DC-DC converters, and offline power controllers**.  

Would you like additional technical details?

Partnumber Manufacturer Quantity Availability
UC3844BVD1R2 MOTORML 44 In Stock

Description and Introduction

High Performance Current Mode Controller The UC3844BVD1R2 is a current-mode PWM controller manufactured by Motorola (now ON Semiconductor).  

### **Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Input Voltage Range (VCC):** 8.5V to 30V  
- **Output Frequency:** Up to 500kHz  
- **Duty Cycle Range:** 0% to 100%  
- **Output Drive Current:** ±1A (peak)  
- **Reference Voltage:** 5V (with ±1% tolerance)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Descriptions:**  
- Designed for DC-DC converter applications  
- Features an adjustable oscillator, current sensing, and error amplifier  
- Includes under-voltage lockout (UVLO) for reliable startup  
- Provides cycle-by-cycle current limiting  

### **Features:**  
- **Current-Mode Operation:** Improves loop response and simplifies compensation  
- **Precision Reference:** 5V ±1% for stable regulation  
- **Programmable Oscillator:** Allows frequency adjustment via external components  
- **Soft-Start Capability:** Reduces inrush current during startup  
- **Low Startup Current:** Typically 1mA for efficient operation  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs  

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

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