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UC2845ADW from TI,Texas Instruments

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15.625ms

UC2845ADW

Manufacturer: TI

Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UC2845ADW TI 6 In Stock

Description and Introduction

Current Mode PWM Controller The UC2845ADW is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Input Voltage Range:** 8.4V to 30V (start-up), 7.6V to 30V (operating)  
- **Output Duty Cycle:** 0% to 100%  
- **Switching Frequency:** Up to 500kHz  
- **Output Current (Source/Sink):** 1A (peak)  
- **Reference Voltage:** 5V (±1%)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-16 (DW)  

### **Descriptions:**  
The UC2845ADW is designed for offline and DC-DC converter applications. It provides precise duty cycle control with current-mode operation, improving loop response and simplifying compensation. The device includes features like under-voltage lockout (UVLO), cycle-by-cycle current limiting, and a trimmed oscillator for accurate frequency control.  

### **Features:**  
- **Current-Mode Operation** for improved transient response  
- **Automatic Feed-Forward Compensation**  
- **Latching PWM** for cycle-by-cycle current limiting  
- **Undervoltage Lockout (UVLO)** with hysteresis  
- **Trimmed Oscillator Discharge Current** for precise frequency control  
- **High-Current Totem Pole Output** (1A peak)  
- **Low Startup and Operating Current**  

This device is commonly used in power supplies, battery chargers, and industrial control systems.

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