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SG5841JSZ from FAI,Fairchild Semiconductor

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SG5841JSZ

Manufacturer: FAI, FSC, SG

Highly Integrated Green-Mode PWM Controller

Partnumber Manufacturer Quantity Availability
SG5841JSZ FAI, FSC, SG 1160 In Stock

Description and Introduction

Highly Integrated Green-Mode PWM Controller Here are the factual details about part SG5841JSZ from the manufacturer FAI:

### **Manufacturer:** FAI  
### **Part Number:** SG5841JSZ  

#### **Specifications:**  
- **Type:** PWM Controller IC  
- **Package:** SOP-8 (Small Outline Package)  
- **Operating Voltage Range:** Typically 8V to 38V  
- **Switching Frequency:** Adjustable (commonly up to 500kHz)  
- **Output Current:** Up to 1A (for driving power MOSFETs)  
- **Duty Cycle:** Adjustable (typically up to 90%)  
- **Protection Features:** Over-voltage protection (OVP), under-voltage lockout (UVLO), over-current protection (OCP)  

#### **Descriptions:**  
- The SG5841JSZ is a high-performance current-mode PWM controller designed for power supply applications.  
- It is commonly used in AC/DC converters, offline power supplies, and DC/DC converters.  
- Provides precise regulation and high efficiency in switching power designs.  

#### **Features:**  
- **Current-Mode Control:** Ensures stable operation and fast transient response.  
- **Adjustable Frequency:** Allows optimization for efficiency and noise reduction.  
- **Low Start-Up Current:** Enhances power-saving performance.  
- **Built-in Soft Start:** Reduces inrush current during startup.  
- **High Noise Immunity:** Suitable for industrial and automotive environments.  

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

Application Scenarios & Design Considerations

Highly Integrated Green-Mode PWM Controller

Alternative Part Number

  • NCP1251ASN65T1G --: Current-mode PWM controller with similar function and package, widely available and a common drop-in style replacement for SG5841 controllers.
  • UC3842BNG --: Classic industry-standard current-mode PWM controller with comparable control scheme, easy to source and well documented as an alternative.
  • OB2263MP --: Low-cost current-mode PWM controller commonly used in similar offline flyback designs, offering comparable functionality at lower cost.
  • NCP1216AP100G --: Current-mode PWM controller with similar function and package, widely available and pin-compatible in many flyback designs.
  • UC3842AN --: Industry-standard current-mode PWM controller with comparable control features, commonly used as a drop-in replacement in similar power supply circuits.
  • OB2263AP --: Low-cost current-mode PWM controller with similar operating characteristics, suitable for offline flyback applications as a functional substitute.
  • NCP1200P60 --: Integrated current-mode PWM controller with built-in high-voltage startup, suitable for offline SMPS designs where the SG5841 is used; different series and pinout should be verified.

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