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UC2842ADWTR from TI,Texas Instruments

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UC2842ADWTR

Manufacturer: TI

Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UC2842ADWTR TI 4000 In Stock

Description and Introduction

Current Mode PWM Controller The UC2842ADWTR is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI). Below are its specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 7.6V to 30V  
- **Operating Frequency:** Up to 500kHz  
- **Output Current (Source/Sink):** 1A (Peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Reference Voltage:** 5V (±1%)  
- **Start-Up Current:** <1mA  
- **Error Amp Bandwidth:** 1MHz  
- **Package:** SOIC-16 (DW)  

### **Descriptions:**  
- The UC2842ADWTR is a fixed-frequency PWM controller optimized for high-performance DC-DC and offline power supplies.  
- It operates in current-mode control, providing improved loop response and simplified compensation.  
- Features include under-voltage lockout (UVLO), cycle-by-cycle current limiting, and a trimmed oscillator for precise duty cycle control.  
- Designed for flyback, forward, and boost converter topologies.  

### **Features:**  
- **Current-Mode Control:** Enhances transient response and simplifies loop compensation.  
- **Automatic Feed-Forward Compensation:** Improves line regulation.  
- **Under-Voltage Lockout (UVLO):** Ensures proper start-up and shutdown.  
- **Trimmed Oscillator:** Provides accurate frequency control.  
- **Soft-Start Capability:** Reduces inrush current during start-up.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  
- **Low Power Consumption:** Efficient for battery-operated applications.  

This device is widely used in switch-mode power supplies (SMPS), battery chargers, and industrial power systems.  

(Data sourced from Texas Instruments' official documentation.)

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