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UC2842 from ST,ST Microelectronics

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UC2842

Manufacturer: ST

CURRENT MODE PWM CONTROLLER

Partnumber Manufacturer Quantity Availability
UC2842 ST 250 In Stock

Description and Introduction

CURRENT MODE PWM CONTROLLER The UC2842 is a current-mode PWM controller manufactured by STMicroelectronics. Below are its key specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:  

### **Specifications:**  
- **Input Voltage Range:** Up to 30V  
- **Operating Frequency:** Up to 500 kHz  
- **Output Current:** ±1A (peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Start-Up Current:** <1mA  
- **Undervoltage Lockout (UVLO):**  
  - Turn-On: 16V (typical)  
  - Turn-Off: 10V (typical)  
- **Reference Voltage:** 5V (±1%)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Options:** PDIP-8, SO-8  

### **Description:**  
The UC2842 is a fixed-frequency pulse-width modulation (PWM) controller designed for DC-DC converter applications. It operates in current-mode control, providing improved loop response and simplified feedback compensation. The device includes features such as cycle-by-cycle current limiting, adjustable oscillator frequency, and a precision voltage reference.  

### **Features:**  
- **Current-Mode Control:** Enhances transient response and simplifies loop compensation.  
- **Automatic Feed-Forward Compensation:** Improves line regulation.  
- **Programmable Oscillator:** Allows frequency adjustment with external components.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within specified voltage ranges.  
- **High-Current Totem Pole Output:** Suitable for driving power MOSFETs directly.  
- **Cycle-by-Cycle Current Limiting:** Provides protection against overloads.  
- **Low Power Consumption:** Optimized for efficiency in standby modes.  

This information is based on the manufacturer's datasheet and technical documentation. For detailed electrical characteristics and application notes, refer to STMicroelectronics' official resources.

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