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UC2842NG4 from TEXAS

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UC2842NG4

Manufacturer: TEXAS

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

Partnumber Manufacturer Quantity Availability
UC2842NG4 TEXAS 11 In Stock

Description and Introduction

Current-Mode PWM Controller 8-PDIP -40 to 85 The UC2842NG4 is a high-performance current-mode PWM controller manufactured by Texas Instruments. Below are its specifications, descriptions, and features:

### **Specifications:**  
- **Manufacturer:** Texas Instruments  
- **Series:** UC2842  
- **Package:** PDIP-8 (Plastic Dual In-Line Package)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Input Voltage Range:** Up to 30V  
- **Output Voltage:** Adjustable via external components  
- **Switching Frequency:** Up to 500kHz (adjustable)  
- **Duty Cycle Range:** 0% to 100%  
- **Output Current (Source/Sink):** 1A (peak)  
- **Reference Voltage:** 5V (±1%)  
- **Start-Up Current:** <1mA  

### **Descriptions:**  
The UC2842NG4 is a fixed-frequency PWM controller designed for offline and DC-DC converter applications. It operates in current-mode control, providing improved line regulation and transient response. The device includes features such as under-voltage lockout (UVLO), cycle-by-cycle current limiting, and a totem-pole output stage for driving power MOSFETs.  

### **Features:**  
- **Current-Mode Control:** Enhances loop response and simplifies compensation.  
- **Under-Voltage Lockout (UVLO):** Ensures proper start-up and shutdown.  
- **Programmable Oscillator:** Adjustable frequency via external resistor and capacitor.  
- **Error Amplifier:** High-gain bandwidth for precise regulation.  
- **Soft-Start Capability:** Reduces inrush current during start-up.  
- **Pulse-by-Pulse Current Limiting:** Protects against overloads.  
- **Totem-Pole Output:** Directly drives power MOSFETs with 1A peak current.  
- **Low Power Consumption:** Optimized for efficiency.  

This device is commonly used in power supplies, battery chargers, and industrial applications requiring precise voltage regulation.  

(Note: Always refer to the official datasheet for detailed electrical characteristics and application notes.)

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