Laptops (Notebook PCs, NBPCs) use high-capacity lithium-ion batteries to achieve long operating time, which could lead to serious accidents in the event of heat generation or fire. Therefore, a secondary protection IC is used in combination with a protection fuse to prevent dangerous conditions even if the IC monitoring the battery (primary protection IC) fails.
ABLIC offers an extensive lineup of various types of battery protection ICs, including ICs that supply power to an external real-time clock and ICs with a wake-up function that prevents the protection fuse from accidental cutoff when the battery is connected.