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SG6859TZ from FAIRCHILD,Fairchild Semiconductor

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SG6859TZ

Manufacturer: FAIRCHILD, FAI/PBF

Flyback & Forward PWM Controllers

Partnumber Manufacturer Quantity Availability
SG6859TZ FAIRCHILD, FAI/PBF 3010 In Stock

Description and Introduction

Flyback & Forward PWM Controllers The part **SG6859TZ** is manufactured by **FAI/PBF**. Below are the specifications, descriptions, and features based on Ic-phoenix technical data files:  

### **Specifications:**  
- **Manufacturer:** FAI/PBF  
- **Part Number:** SG6859TZ  
- **Type:** Power management IC (PWM controller)  
- **Package:** TO-220 or similar (exact package may vary)  
- **Input Voltage Range:** Typically 8V to 30V (confirm datasheet for exact range)  
- **Output Voltage:** Adjustable (depends on external components)  
- **Switching Frequency:** High-frequency operation (exact kHz/MHz range may vary)  
- **Protection Features:** Over-voltage, over-current, and thermal shutdown (if applicable)  

### **Descriptions:**  
- The **SG6859TZ** is a pulse-width modulation (PWM) controller designed for power supply applications.  
- It is commonly used in switch-mode power supplies (SMPS), AC-DC converters, and DC-DC converters.  
- The IC provides precise voltage regulation and efficiency in power conversion systems.  

### **Features:**  
- **High Efficiency:** Optimized for power-saving applications.  
- **Adjustable Output:** Allows flexibility in design with external resistors/capacitors.  
- **Built-in Protections:** May include over-voltage, over-current, and thermal protection.  
- **Wide Input Range:** Supports a broad input voltage range for versatile applications.  

For exact electrical characteristics, refer to the **FAI/PBF datasheet** for the **SG6859TZ**.

Application Scenarios & Design Considerations

Flyback & Forward PWM Controllers

Alternative Part Number

  • UC3842AN --: Industry-standard current-mode PWM controller in DIP-8, functionally similar to SG6859 and widely available as a drop-in replacement in many flyback designs.
  • NCP1200P60 --: Current-mode PWM controller with integrated high-voltage startup, suitable for offline SMPS applications and a practical substitute for the SG6859 in low-power adapters.
  • OB2263AP --: Low-cost current-mode PWM controller commonly used in similar flyback power supplies, offering comparable control functionality and pin-compatible layout options.
  • OB2263 --: Low-cost current-mode PWM controller commonly used in the same SMPS applications, offering comparable operating characteristics and easy sourcing.
  • NCP1252 --: Modern current-mode PWM controller with similar control topology and protection features, suitable as a functional substitute in flyback power supplies.

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