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UC3842BD1G from ON,ON Semiconductor

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UC3842BD1G

Manufacturer: ON

High Performance Current Mode Controllers

Partnumber Manufacturer Quantity Availability
UC3842BD1G ON 2261 In Stock

Description and Introduction

High Performance Current Mode Controllers The UC3842BD1G is a high-performance current-mode PWM controller manufactured by ON Semiconductor.  

### **Specifications:**  
- **Topology:** Current-Mode PWM Controller  
- **Input Voltage (VCC):** 8V to 30V  
- **Output Current (Gate Drive):** ±1A (peak)  
- **Switching Frequency:** Up to 500kHz  
- **Duty Cycle Range:** 0% to 100%  
- **Reference Voltage:** 5V (±1%)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Descriptions:**  
The UC3842BD1G is designed for DC-DC converter applications, providing precise control of switching power supplies. It features an oscillator, temperature-compensated reference, high-gain error amplifier, current sensing comparator, and a totem-pole output stage for driving power MOSFETs.  

### **Features:**  
- **Current-Mode Operation** for improved loop response  
- **Automatic Feed-Forward Compensation**  
- **Latching PWM** for cycle-by-cycle current limiting  
- **Undervoltage Lockout (UVLO)** with hysteresis  
- **Low Startup Current** (<1mA)  
- **High-Current Totem-Pole Output** for driving MOSFETs  
- **Internal Trimmed Bandgap Reference** for accuracy  

This device is commonly used in offline and DC-DC power supplies, battery chargers, and SMPS (Switched-Mode Power Supply) applications.

Partnumber Manufacturer Quantity Availability
UC3842BD1G ONSEM 897 In Stock

Description and Introduction

High Performance Current Mode Controllers The UC3842BD1G is a high-performance current-mode PWM controller manufactured by ON Semiconductor.  

### **Specifications:**  
- **Topology:** Current-Mode PWM Controller  
- **Input Voltage Range:** Up to 30V  
- **Output Frequency:** Up to 500kHz  
- **Duty Cycle Range:** 0% to 100% (adjustable)  
- **Output Drive Current:** ±1A (peak)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Type:** SOIC-8  

### **Descriptions:**  
The UC3842BD1G is designed for DC-DC converter applications, providing precise control of switching power supplies. It features an oscillator, high-gain error amplifier, current sensing comparator, and a totem-pole output stage for driving power MOSFETs.  

### **Features:**  
- **Current-Mode Operation:** Improves loop response and simplifies compensation.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within the specified voltage range.  
- **Cycle-by-Cycle Current Limiting:** Enhances system reliability.  
- **Internal Trimmed Bandgap Reference:** Provides stable voltage regulation.  
- **Low Startup Current:** Typically 0.5mA for efficient power-up.  
- **Pulse-by-Pulse Shutdown:** Offers protection against overloads.  

This device is commonly used in offline and DC-DC converters, power supplies, and battery chargers.

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