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UC3845AD from MSC

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UC3845AD

Manufacturer: MSC

Current Mode PWMs

Partnumber Manufacturer Quantity Availability
UC3845AD MSC 29 In Stock

Description and Introduction

Current Mode PWMs The UC3845AD is a current-mode PWM controller manufactured by MSC (Microsemi Corporation).  

### **Specifications:**  
- **Input Voltage Range:** 8.4V to 30V  
- **Operating Frequency:** Up to 500kHz  
- **Output Current:** 200mA (peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Reference Voltage:** 5V (±1%)  
- **Error Amplifier Gain Bandwidth:** 1MHz  
- **Current Sense Comparator Response Time:** 100ns  
- **Package:** SOIC-8  

### **Descriptions:**  
The UC3845AD is a high-performance fixed-frequency current-mode PWM controller. It is designed for DC-DC converter applications, providing precise regulation with minimal external components. The device includes an oscillator, temperature-compensated reference, high-gain 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  
- **Internal Trimmed Bandgap Reference**  
- **High-Current Totem-Pole Output** for driving power MOSFETs  
- **Low Start-Up Current** (<1mA)  

This information is based on the manufacturer's datasheet. For detailed application notes and electrical characteristics, refer to the official documentation.

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