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UC2845AD8 from UCC

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UC2845AD8

Manufacturer: UCC

Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UC2845AD8 UCC 534 In Stock

Description and Introduction

Current Mode PWM Controller The UC2845AD8 is a high-performance current-mode PWM controller manufactured by Texas Instruments (UCC).  

### **Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Input Voltage Range (VCC):** 8V to 30V (operating)  
- **Output Drive Current:** ±1A (peak)  
- **Switching Frequency:** Up to 500kHz  
- **Duty Cycle Range:** 0% to 100%  
- **Reference Voltage (VREF):** 5V (±1%)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin SOIC (D8)  

### **Descriptions and Features:**  
- **Current-Mode Control:** Provides cycle-by-cycle current limiting for improved transient response.  
- **Under-Voltage Lockout (UVLO):** Ensures proper startup with a typical threshold of 8.4V (on) and 7.6V (off).  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Error Amplifier:** Features high-gain bandwidth for precise regulation.  
- **Oscillator Sync Capability:** Allows synchronization with external clock signals.  
- **Pulse-by-Pulse Current Limiting:** Enhances system reliability.  
- **Low Startup Current:** Typically 0.5mA for efficient operation.  
- **Totem-Pole Output:** Optimized for driving power MOSFETs directly.  

This IC is commonly used in switch-mode power supplies (SMPS), DC-DC converters, and offline power applications.

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