MM4039

MinebeaMitsumi's supercapacitor charge/discharge control ICs are designed for power supply backup applications. They are particularly well-suited for compact backup power systems that use supercapacitors. MinebeaMitsumi MM4039 is a control IC that manages the charging and discharging of supercapacitors for power backup in both 3.3V and 5V systems. It charges the supercapacitor while simultaneously supplying power to the system from the main power source. In the event of a power supply failure, MM4039 automatically switches to backup mode, using the supercapacitor to continue powering the system. During a power outage, the IC will switch to backup operation and use power from the super capacitor to sustain the system. This ensures a smooth transition and enables safe shutdown of critical components such a the microcontroller, memory during outages.

MM4039 features :

• Easily enables power backup applications using supercapacitors
• Built-in charge pump to drive the input-side load switch
• Input current distribution function with priority to system power supply (IINDPM function)
• 13V input voltage rating with overvoltage protection
• Input overcurrent protection
• Small package（4.0mm x 4.0mm x 0.75mm)
• Operating ambient temperature range : Ta=-40～105℃

MM4039 applications :

• For power backup control using supercapacitors
• Surveillance cameras,
• Industrial IoT equipment,
• Handy Terminal for business use,
• Capacitor UPS, etc