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UC2845AD8TR from TI,Texas Instruments

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UC2845AD8TR

Manufacturer: TI

Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UC2845AD8TR TI 798 In Stock

Description and Introduction

Current Mode PWM Controller The UC2845AD8TR is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Input Voltage Range (VCC):** 8.5V to 30V  
- **Operating Frequency:** Up to 500kHz  
- **Output Drive Current:** ±1A (peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Reference Voltage (VREF):** 5V ±1%  
- **Error Amplifier Bandwidth:** 1MHz  
- **Start-up Current:** <1mA  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Descriptions:**  
The UC2845AD8TR is a fixed-frequency PWM controller optimized for high-performance DC-DC converters. It features current-mode control for improved loop response and includes built-in protections such as under-voltage lockout (UVLO), cycle-by-cycle current limiting, and a programmable soft-start.  

### **Features:**  
- **Current-Mode Operation:** Improves transient response and simplifies loop compensation.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within the specified voltage range.  
- **Programmable Soft-Start:** Reduces inrush current during startup.  
- **Precision Reference Voltage:** 5V ±1% for accurate regulation.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  
- **Low Start-up and Operating Current:** Enhances efficiency.  
- **Wide Operating Frequency Range:** Up to 500kHz for flexible design.  

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

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