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SG3731J from SG

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SG3731J

Manufacturer: SG, LINFINTY

DC MOTOR PULSE WIDTH MODULATOR

Partnumber Manufacturer Quantity Availability
SG3731J SG, LINFINTY 62 In Stock

Description and Introduction

DC MOTOR PULSE WIDTH MODULATOR The part **SG3731J** is manufactured by **LINFINTY**. Below are the specifications, descriptions, and features based on the available knowledge:  

### **Specifications:**  
- **Type:** Voltage Regulator (LDO - Low Dropout)  
- **Input Voltage Range:** Up to **18V**  
- **Output Voltage:** **3.3V** (fixed)  
- **Output Current:** **1A** (maximum)  
- **Dropout Voltage:** **0.5V @ 1A**  
- **Line Regulation:** **±0.2%** (typical)  
- **Load Regulation:** **±0.4%** (typical)  
- **Quiescent Current:** **5mA** (typical)  
- **Operating Temperature Range:** **-40°C to +125°C**  
- **Package:** **TO-252 (DPAK), TO-263 (D2PAK)**  

### **Descriptions:**  
- The **SG3731J** is a **low-dropout (LDO) linear voltage regulator** designed for stable **3.3V** output.  
- It is suitable for applications requiring **high input voltage tolerance** and **low noise performance**.  
- Features built-in **overcurrent protection (OCP) and thermal shutdown (TSD)** for enhanced reliability.  

### **Features:**  
- **High Input Voltage Capability (up to 18V)**  
- **Low Dropout Voltage (0.5V @ 1A)**  
- **Fixed 3.3V Output with ±2% Accuracy**  
- **Overcurrent and Thermal Protection**  
- **Wide Operating Temperature Range (-40°C to +125°C)**  
- **Available in Surface-Mount Packages (TO-252, TO-263)**  

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

Application Scenarios & Design Considerations

DC MOTOR PULSE WIDTH MODULATOR

Alternative Part Number

  • LM393N --: Dual comparator in DIP-8 with similar open-collector output and wide supply range, a common drop-in substitute for SG3731J comparator applications.
  • LM2903N --: Dual differential comparator with comparable input offset and supply voltage ratings, widely available and pin-compatible in DIP-8.
  • NE532N --: Dual comparator with similar electrical characteristics and DIP-8 pinout, suitable as a functional replacement for the SG3731J.
  • LM317LZ --: Widely available adjustable linear regulator in TO-92 package, commonly used as a substitute for SG3731J-type regulators with similar voltage/current ratings.
  • TL783CKC --: High-voltage adjustable linear regulator offering comparable regulation performance and package options, suitable as a functional replacement.
  • LM350T --: Adjustable positive voltage regulator with higher current capability, pin-compatible in many TO-220 designs and a robust fallback option.

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