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UC2842ANG4 from TI,Texas Instruments

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UC2842ANG4

Manufacturer: TI

Current Mode PWM Controller 8-PDIP -40 to 85

Partnumber Manufacturer Quantity Availability
UC2842ANG4 TI 5 In Stock

Description and Introduction

Current Mode PWM Controller 8-PDIP -40 to 85 The UC2842ANG4 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  
- **Output Drive Current:** ±1A (peak)  
- **Switching Frequency:** Up to 500 kHz  
- **Duty Cycle Range:** 0% to 100%  
- **Reference Voltage (VREF):** 5V ±1%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-Pin PDIP (Plastic Dual In-Line Package)  

### **Descriptions:**  
The UC2842ANG4 is designed for offline and DC-to-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:** Enhances transient response and simplifies loop compensation.  
- **Under-Voltage Lockout (UVLO):** Ensures reliable start-up and shutdown.  
- **Trimmed Oscillator:** Provides precise frequency control.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  
- **Cycle-by-Cycle Current Limiting:** Protects against overloads.  
- **Automatic Feed-Forward Compensation:** Improves line regulation.  
- **Low Start-Up Current:** Typically 0.5mA.  
- **Internal Soft-Start:** Reduces start-up stresses.  

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

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