MM3865A-B-C-D

MinebeaMitsumi's charge control ICs are suitable for charging single-cell Li-ion and Li-polymer batteries and ensure stable charging through highly accurate voltage and current regulation. High safety is achieved through multiple protection features, including battery temperature monitoring via an external thermistor and a built-in charging timer. Additionally, the wide range of supported charging voltages and currents enables flexible system design, allowing compatibility with various battery types. MinebeaMitsumi MM3865A/B/C/D is a linear charge control IC for single-cell Li-ion and Li-polymer batteries. It offers precise charge current control from 3mA to 500mA, making it a compact and low-power choice for mobile devices using low-capacity batteries. The IC is available with multiple finely tuned charge voltage options (ranging from 4.1V to 4.45V) to match different battery types, and the full-charge current can be individually set—enabling the design of flexible and customized charging systems. Its low battery leakage current helps extend the operating time of mobile devices.

MM3865A/B/C/D features :

• Low charge current control suitable for low-capacitance battery (charge current 3mA min)
• Multiple charge voltage (4.1V~4.45V)
• Adjustable full charge current setting (ITERML pin)
• High Rating input voltage(13V)
• Low battery leak current (10nA max)
• Multiple battery temperature profile
• Space saving package (1.8mm x 1.6mm x 0.55mm)
• Operating temperature range Ta=-40～85℃

M3865A/B/C/D applications :

• Small mobile device
• Earphone
• Healthcare device
• Others