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UC3842ADW from TI,Texas Instruments

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UC3842ADW

Manufacturer: TI

Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UC3842ADW TI 27 In Stock

Description and Introduction

Current Mode PWM Controller The UC3842ADW is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**  
- **Manufacturer:** Texas Instruments (TI)  
- **Part Number:** UC3842ADW  
- **Package:** SOIC-16 (DW)  
- **Topology:** Current-Mode PWM Controller  
- **Input Voltage Range:** Up to 30V  
- **Output Voltage:** Adjustable via external components  
- **Frequency Range:** Up to 500kHz  
- **Duty Cycle Range:** 0% to 100%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Output Current:** 200mA (peak)  
- **Start-up Current:** <1mA  

### **Descriptions:**  
- The UC3842ADW is a fixed-frequency PWM controller optimized for DC-DC converter applications.  
- It provides precise control for power supply designs with features like cycle-by-cycle current limiting.  
- The device includes an oscillator, error amplifier, current sensing comparator, and a totem-pole output driver.  
- It is commonly used in offline and DC-DC converters, battery chargers, and power supplies.  

### **Features:**  
- **Current-Mode Control:** Improves loop response and simplifies compensation.  
- **Automatic Feed-Forward Compensation:** Enhances line regulation.  
- **Latching PWM:** Ensures single-pulse response per clock cycle.  
- **Undervoltage Lockout (UVLO):** Ensures proper start-up and shutdown.  
- **High-Current Totem-Pole Output:** Directly drives power MOSFETs.  
- **Internal Trimmed Bandgap Reference:** Provides stable voltage regulation.  
- **Low Start-up and Operating Current:** Suitable for efficient designs.  

This information is based solely on the manufacturer's datasheet and technical documentation.

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