On this slide, the block diagram displays the boost converters from low voltage energy sources. It can be seen here that there is no reverse current. The datasheet includes additional sample block diagrams featuring: a primary cell Bluetooth low energy temperature sensor wearable, a primary cell Bluetooth low energy optical heart rate monitoring sensor wearable, a secondary rechargeable lithium cell Bluetooth low energy optical heart rate monitor sensor wearable, and a supercap backup solution to maintain uniform sound for alarm beeper annunciators.