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MB39A102 from FUJ

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MB39A102

Manufacturer: FUJ, FUJITSU

4-ch DC/DC Converter IC

Partnumber Manufacturer Quantity Availability
MB39A102 FUJ, FUJITSU 1716 In Stock

Description and Introduction

4-ch DC/DC Converter IC The MB39A102 is a DC-DC converter IC manufactured by FUJITSU. Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Voltage Range:** Adjustable (externally set)  
- **Output Current:** Up to 600mA  
- **Switching Frequency:** 1.2MHz (typical)  
- **Efficiency:** High efficiency (typically over 90%)  
- **Package:** SOP-8 (Small Outline Package)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
- The MB39A102 is a step-up (boost) DC-DC converter designed for low-voltage applications.  
- It integrates a PWM controller, MOSFET, and other necessary components for compact power supply solutions.  
- Suitable for battery-powered devices, portable electronics, and other applications requiring efficient voltage conversion.  

### **Features:**  
- **Low Start-up Voltage:** Operates from input voltages as low as 2.7V.  
- **Built-in MOSFET:** Reduces external component count.  
- **Soft-start Function:** Prevents inrush current at startup.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation under low input voltage conditions.  
- **Current Limiting:** Protects the IC and load from overcurrent.  
- **Compact Design:** SOP-8 package for space-constrained applications.  

For detailed electrical characteristics and application circuits, refer to the official FUJITSU datasheet.

Application Scenarios & Design Considerations

4-ch DC/DC Converter IC

Alternative Part Number

  • TPS40305 --: Wide-input synchronous buck controller with comparable function and voltage range, commonly used as a Fujitsu MB39A102 substitute.
  • LM27403 --: Synchronous buck controller offering similar control architecture and current-mode operation for DC-DC conversion designs.
  • ISL8117 --: Synchronous buck controller with wide input range and integrated drivers, suitable as a functional replacement in power supply circuits.
  • TPS62130 --: Widely available synchronous step-down DC-DC converter with comparable input voltage range and current capability, often used as a drop-in substitute for MB39A102 power supply designs.
  • MP1584 --: Low-cost 3A step-down converter with similar switching regulator function and compact footprint, suitable for replacing MB39A102 in many power rail applications.
  • LM2596 --: Industry-standard buck regulator with similar voltage/current ratings and broad availability, making it a reliable fallback alternative when MB39A102 is unavailable.
  • TPS40304 --: Synchronous buck controller with similar wide input range and external MOSFET drive, suitable replacement for MB39A102 power supply designs.
  • ISL6545 --: Single-phase synchronous buck PWM controller with comparable voltage-mode control and gate drive capability.
  • LTC3851 --: Wide input synchronous step-down controller offering similar functionality and flexible external component selection.

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