Low-power voltage monitors, current sense amplifier, power-supply control

 ZXCT1009 Series 300 kHz 4 uA 2.5 to 20 V High-Side Current Monitor - SOT-23

https://www.futureelectronics.com/p/semiconductors--analog--system-management--current-monitors/zxct1009fta-diodes-incorporated-3140295