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UC2845D8TRG4 from TI,Texas Instruments

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UC2845D8TRG4

Manufacturer: TI

Current-Mode PWM Controller 8-SOIC -40 to 85

Partnumber Manufacturer Quantity Availability
UC2845D8TRG4 TI 5000 In Stock

Description and Introduction

Current-Mode PWM Controller 8-SOIC -40 to 85 The UC2845D8TRG4 is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Input Voltage Range (VCC):** 7.6V to 30V  
- **Output Frequency:** Up to 500kHz  
- **Duty Cycle Range:** 0% to 100%  
- **Output Current (Source/Sink):** ±1A (peak)  
- **Reference Voltage:** 5V (±1%)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Descriptions:**  
The UC2845D8TRG4 is designed for DC-DC converter applications, providing precise regulation with features like adjustable switching frequency, cycle-by-cycle current limiting, and under-voltage lockout (UVLO). It is optimized for offline and DC-DC power supplies.  

### **Features:**  
- **Current-Mode Control:** Improves loop response and simplifies compensation.  
- **Under-Voltage Lockout (UVLO):** Ensures proper startup and shutdown.  
- **Programmable Oscillator:** Allows frequency adjustment with external components.  
- **Soft-Start Capability:** Reduces inrush current at startup.  
- **Error Amplifier:** Provides high gain-bandwidth for tight regulation.  
- **Pulse-by-Pulse Current Limiting:** Enhances system reliability.  

This device is commonly used in power supply designs, including flyback, forward, and boost converters.

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