Battery protection IC uses high voltage CMOS process

17th December 2015

Mick Elliott

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Datasheet

The new AP9234L battery protection IC from Diodes Incorporated is now being shipped by distributor Mouser Electronics. This single-chip protection solution provides a rich set of protection features for single-cell lithium-ion or lithium-polymer rechargeable battery packs in smartphones, cameras, and other electronic equipment.

The device integrates a high-accuracy battery protection circuit with a dual N-channel, common-drain MOSFET that features an ultra-low R_SS(ON) specification, typically just 13 mOhms (at V_DD = 4.0V, I_D = 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.