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UC2845AD

Current Mode PWMs

Partnumber Manufacturer Quantity Availability
UC2845AD 250 In Stock

Description and Introduction

Current Mode PWMs The UC2845AD is a high-performance current-mode PWM controller manufactured by Texas Instruments. Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 8.5V to 30V  
- **Operating Frequency:** Up to 500kHz  
- **Output Current:** ±1A (peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Reference Voltage:** 5V (±1% accuracy)  
- **Low Startup Current:** <1mA  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
- The UC2845AD is a fixed-frequency pulse-width modulation (PWM) controller designed for DC-DC converter applications.  
- It operates in current-mode control, providing improved loop response and simplified feedback compensation.  
- The device includes an undervoltage lockout (UVLO) feature to ensure proper startup and shutdown.  
- Available in an 8-pin SOIC (D) package.  

### **Features:**  
- **Current-Mode Control:** Enhances transient response and simplifies loop compensation.  
- **Automatic Feed-Forward Compensation:** Improves line regulation.  
- **Programmable Oscillator:** Allows frequency adjustment with external components.  
- **Undervoltage Lockout (UVLO):** Ensures reliable operation under low-voltage conditions.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Pulse-by-Pulse Current Limiting:** Protects against overloads.  
- **Totem-Pole Output:** Supports high-current gate drive for power MOSFETs.  

This information is based solely on the manufacturer's datasheet for the UC2845AD.

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