MM3722CM2RRE

The MM3722CM2RRE from MinebeaMitsumi is a high-voltage CMOS Lithium-Ion Battery Protection IC. It is engineered to safeguard rechargeable Lithium-ion and Lithium-polymer batteries by detecting and preventing overcharge, overdischarge, discharging overcurrent, charging overcurrent, and short circuits.

This IC series features four voltage detectors, a short detection circuit, reference voltage sources, an oscillator, a counter circuit, and logical circuits. It utilizes a current sensing resistor (Rsns) for high-precision charge and discharge current detection. For one-cell battery packs, it can use the on-resistance of the FET SW or a chip resistor for over-current/short-current detection, ensuring high accuracy and minimal temperature dependence.

Key electrical specifications include a wide range of detection voltages for overcharge (3.6V to 5.0V) and overdischarge (2.0V to 3.0V), with precise accuracy. Delay times for various protection events are also configurable, ranging from microseconds for short detection to seconds for overcharge detection. The 0V battery charge function can be selected for permission or inhibition.

Designed for battery management systems (BMS), the MM3722CM2RRE is suitable for applications requiring robust battery protection. Its integrated nature and precise detection capabilities make it a reliable component for extending battery life and ensuring safety in portable electronic devices.