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SG3846J from SG

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SG3846J

Manufacturer: SG

CURRENT MODE PWM CONTROLLER

Partnumber Manufacturer Quantity Availability
SG3846J SG 1047 In Stock

Description and Introduction

CURRENT MODE PWM CONTROLLER The part **SG3846J** is a **PWM Controller IC** manufactured by **ON Semiconductor**.  

### **Specifications:**  
- **Type:** Current Mode PWM Controller  
- **Topology:** Boost, Flyback, Forward  
- **Output Type:** Dual, Totem Pole  
- **Frequency - Max:** 500kHz  
- **Duty Cycle (Max):** 50%  
- **Supply Voltage (Vcc/Vdd):** 8V to 40V  
- **Output Current:** 200mA (Source/Sink)  
- **Operating Temperature:** -40°C to +85°C  
- **Package:** 16-DIP (0.300", 7.62mm)  

### **Descriptions:**  
- Designed for high-performance switching power supplies.  
- Features include adjustable oscillator frequency, soft-start control, and error amplifier.  
- Includes under-voltage lockout (UVLO) and current limiting.  

### **Features:**  
- **Current Mode Operation** for improved loop response.  
- **Programmable Oscillator** with sync capability.  
- **Soft-Start Control** for reduced inrush current.  
- **Error Amplifier** with reference for feedback control.  
- **Dual Output Drivers** for push-pull or single-ended configurations.  
- **Under-Voltage Lockout (UVLO)** for protection.  

This information is based on the manufacturer's datasheet. For detailed application notes, refer to the official documentation.

Application Scenarios & Design Considerations

CURRENT MODE PWM CONTROLLER

Alternative Part Number

  • UC3846J --: Pin-compatible current-mode PWM controller from the same UC3846 family, widely available and a direct functional replacement for the SG3846J.
  • UC2846J --: Same UC3846-series architecture with identical control functions and pinout, suitable as a drop-in alternative with similar electrical ratings.
  • MC3846J --: Second-source current-mode PWM controller equivalent to the SG3846J, offering the same control loop features and pin configuration.
  • MC34060AP --: General-purpose PWM controller with comparable current-mode regulation features, usable as an alternative when exact SG3846 timing characteristics are not critical.

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