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SG6741ASZ from FAI,Fairchild Semiconductor

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SG6741ASZ

Manufacturer: FAI, FSC

Highly Integrated Green-Mode PWM Controller

Partnumber Manufacturer Quantity Availability
SG6741ASZ FAI, FSC 7592 In Stock

Description and Introduction

Highly Integrated Green-Mode PWM Controller Here are the factual details about part **SG6741ASZ** from Ic-phoenix technical data files:  

### **Manufacturer:**  
Silicon General  

### **Specifications:**  
- **Type:** PWM Controller IC  
- **Topology:** Flyback, Forward  
- **Input Voltage Range:** 8.5V to 30V  
- **Output Voltage:** Adjustable (depends on external components)  
- **Switching Frequency:** Up to 500kHz  
- **Duty Cycle:** Up to 50%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Descriptions:**  
- The SG6741ASZ is a high-performance current-mode PWM controller designed for offline and DC-DC power supply applications.  
- It features built-in protections such as overcurrent, undervoltage lockout (UVLO), and thermal shutdown.  
- Suitable for flyback and forward converter designs.  

### **Features:**  
- **Current-Mode Control** for improved transient response  
- **Programmable Soft-Start** to reduce inrush current  
- **Under-Voltage Lockout (UVLO)** for reliable startup  
- **Cycle-by-Cycle Current Limiting** for protection  
- **Low Startup Current** (typically 100µA)  
- **500kHz Maximum Switching Frequency**  

For exact application details, refer to the manufacturer's datasheet.

Application Scenarios & Design Considerations

Highly Integrated Green-Mode PWM Controller

Alternative Part Number

  • NCP1252ADR2G --: Current-mode PWM controller with similar function and pinout, widely available and a common drop-in for SG6741-class controllers.
  • UC3842BD1R2G --: Industry-standard current-mode PWM controller with comparable drive and compensation features, suitable for flyback designs.
  • OB2263MP --: Low-cost current-mode PWM controller commonly used in SMPS adapters, functionally similar to the SG6741 family.
  • UC3842BN --: Classic industry-standard current-mode PWM controller, functionally similar and readily available for drop-in redesigns.

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