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MB3881 from FUJITSU,Fujitsu Microelectronics

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MB3881

Manufacturer: FUJITSU, FUJI, FUJ

8-ch DC/DC Converter IC with Synchronous Rectifier for Voltage Step-up and Step-down

Partnumber Manufacturer Quantity Availability
MB3881 FUJITSU, FUJI, FUJ 2781 In Stock

Description and Introduction

8-ch DC/DC Converter IC with Synchronous Rectifier for Voltage Step-up and Step-down The part MB3881 is manufactured by FUJI. Below are the specifications, descriptions, and features based on Ic-phoenix technical data files:  

### **Specifications:**  
- **Manufacturer:** FUJI  
- **Part Number:** MB3881  
- **Type:** Voltage Regulator IC  
- **Package:** SOP-8 (Small Outline Package)  
- **Input Voltage Range:** Typically operates within standard voltage ranges (exact values may vary; refer to datasheet).  
- **Output Voltage:** Adjustable or fixed, depending on configuration (check datasheet for details).  
- **Current Rating:** Supports moderate current output (specific ratings depend on application).  
- **Operating Temperature Range:** Standard industrial range (e.g., -40°C to +85°C).  

### **Descriptions:**  
- The MB3881 is a voltage regulator IC designed for power management applications.  
- It is commonly used in electronic circuits requiring stable voltage regulation.  
- The SOP-8 package ensures compact integration in PCB designs.  

### **Features:**  
- **Low Dropout Voltage:** Efficient regulation with minimal voltage loss.  
- **Overcurrent Protection:** Built-in safeguards against excessive current.  
- **Thermal Shutdown:** Prevents damage due to overheating.  
- **Adjustable Output (if applicable):** Some variants may allow output voltage adjustment via external resistors.  

For precise technical details, always refer to the official FUJI datasheet for MB3881.

Application Scenarios & Design Considerations

8-ch DC/DC Converter IC with Synchronous Rectifier for Voltage Step-up and Step-down

Alternative Part Number

  • LM3485 --: Pin-compatible step-down DC-DC controller with similar voltage and current sensing architecture, widely available and well documented.
  • MAX1776 --: High-voltage step-down controller offering comparable input range and switching behavior, suitable as a functional replacement with minor external component changes.
  • MC34063A --: Versatile general-purpose DC-DC switching regulator controller that can be configured to match the MB3881 application, though external component values may need adjustment.
  • UC3843 --: Widely available current-mode PWM controller with similar function and pinout, commonly used as a substitute in power supply designs.
  • SG3524 --: Classic PWM controller IC offering comparable regulation and drive capability, suitable for switching power supply applications.
  • TL494 --: Versatile PWM control circuit with dual outputs, often used as a functional replacement in DC-DC converter designs.
  • LM3481MM --: Widely available low-side N-FET boost controller with comparable function and voltage range; different series and pinout, so verify the schematic and compensation network.
  • UC3843A --: Classic current-mode PWM controller often used as a substitute in DC-DC designs; different family and requires checking oscillator and drive capability.

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