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UC3844BDR2G from ON,ON Semiconductor

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5.005ms

UC3844BDR2G

Manufacturer: ON

HIGH PERFORMANCE CURRENT MODE CONTROLLERS

Partnumber Manufacturer Quantity Availability
UC3844BDR2G ON 38854 In Stock

Description and Introduction

HIGH PERFORMANCE CURRENT MODE CONTROLLERS The UC3844BDR2G is a high-performance current-mode PWM controller manufactured by ON Semiconductor.  

### **Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Input Voltage (VCC):** 8.4V to 30V (operating)  
- **Output Voltage (VOUT):** Adjustable via external components  
- **Switching Frequency:** Up to 500kHz  
- **Duty Cycle Range:** 0% to 100% (adjustable)  
- **Peak Output Current:** ±1A (source/sink)  
- **Reference Voltage:** 5V (±1% accuracy)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Descriptions:**  
The UC3844BDR2G is designed for DC-DC converter applications, providing precise control over power delivery. It features a fixed-frequency oscillator, current sensing, and error amplification for stable operation in flyback, forward, and boost converters.  

### **Features:**  
- **Current-Mode Control:** Enhances loop response and simplifies compensation.  
- **Under-Voltage Lockout (UVLO):** Ensures proper startup with hysteresis.  
- **Cycle-by-Cycle Current Limiting:** Protects against overloads.  
- **Internal Trimmed Reference:** 5V with tight tolerance (±1%).  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Low Startup Current:** Typically 0.5mA.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  

This device is widely used in power supplies, battery chargers, and industrial applications requiring efficient power conversion.

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