Nisshinbo Micro Devices Inc has introduced the new R5651 Series of overcharge and discharge protection IC designed for 3- to 5- series cell Li-ion/Li-polymer rechargeable battery pack. The R5651 IC can select any number of cells by applying a certain voltage on the SEL pin and includes short-circuit and protection circuits for charge/discharge overcurrent.
This new series features a high voltage tolerant process absolute maximum rating of 30V and high-accuracy voltage detection along with temperature protection by NTC thermistor. This IC is suitable for applications like scooter (balance car), cleaner, heat insulation box, E-Bike, and power tool.
- Using a current-sense resistor with low resistance ratings: reduction in high temperature in large current and realizing a thermal design of a board easily
- Separation between charging and discharging paths: achieving low impedance of the battery pack
- Cascading: achieving simple circuit configuration for battery pack with six-cell and more and reducing external components