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UC3845BD1R2 from ON,ON Semiconductor

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UC3845BD1R2

Manufacturer: ON

High Performance Current Mode Controller

Partnumber Manufacturer Quantity Availability
UC3845BD1R2 ON 1700 In Stock

Description and Introduction

High Performance Current Mode Controller The UC3845BD1R2 is a high-performance current-mode PWM controller manufactured by ON Semiconductor.  

### **Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Input Voltage (VCC):** 7.6V to 30V  
- **Output Frequency:** Up to 500kHz  
- **Duty Cycle:** 0% to 100% (adjustable)  
- **Output Drive Current:** ±1A (peak)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Descriptions:**  
The UC3845BD1R2 is designed for DC-DC converter applications, providing precise control of switching power supplies. It features an oscillator, error amplifier, current sensing comparator, and a totem-pole output stage for driving power MOSFETs.  

### **Features:**  
- **Current-Mode Operation:** Provides cycle-by-cycle current limiting.  
- **Adjustable Oscillator Frequency:** Set by external timing components.  
- **Under-Voltage Lockout (UVLO):** Ensures proper startup and shutdown.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **High-Current Totem-Pole Output:** Directly drives power MOSFETs.  
- **Low Startup and Operating Current:** Enhances efficiency.  

This device is commonly used in offline and DC-DC converters, power supplies, and battery chargers.

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