The AP9234L integrates a high-accuracy battery protection circuit with a dual N-channel common-drain MOSFET that features an ultra-low R SS(ON) (static-source on-resistance) specification, typically 13 mΩ at V DD = 4.0V and I D = 1.0A. Safe battery charging and discharging is achieved by turning the MOSFET off when overcharge voltage/current, over-discharge voltage/current, or load short-circuit conditions are detected. A built-in fixed delay time also protects external components.
Features include stable voltage detection over the full -40° to +85°C operating temperature range, power savings through a low quiescent current, typically 3.0 μA in normal mode and 0.1 μA in power-down mode. An over-current detection voltage compensation circuit assures current limit accuracy. As well as a power-down capability, the AP9234L features a selectable auto-wake up function and offers protection voltage customisation to cater for different cell-type specifications.
In a standard pinout DFN2535-6 package, the AP9234L is priced at $0.41 (10,000).