The device integrates a high-accuracy battery protection circuit with a dual N-channel, common-drain MOSFET that features an ultra-low RSS(ON) specification, typically just 13 mOhms (at VDD = 4.0V, ID = 1.0A).
It safely charges and disgorges the battery by turning the MOSFET off when overcharge voltage/current, over-discharge voltage/current, or load short-circuit conditions are detected.
The circuit also includes a built-in fixed, delay time to protect external components. The device delivers power savings through a low quiescent current, typically 3.0μA in normal mode and 0.1μA in power-down mode.
Additionally, an over-current detection voltage compensation circuit assures current limit accuracy. The IC features power-down capability, as well as a selectable auto-wake-up function, and offers protection voltage customisation for different cell-type specifications.
The AP9234L is available in a UDFN2535-6 surface-mount package and capitalises on a high-voltage CMOS process to withstand extreme transient and surge voltages from adapters. With an integrated compensation circuit, it can ensure highly accurate charge/discharge current limit range in the full operating temperature range of ‑40 to +85 degrees Celsius.