The ISL28022FRZ from Renesas is a low power, dual-channel, digital Bi-directional current (BC) monitor. It is a voltage/current sense IC with programmable gain and rail-to-rail outputs making it an ideal choice for low voltage DC/DC and switch mode power supplies (SMPS). It has an integrated differential amplifier for measuring current flow through a shunt resistor, providing an economical solution for monitoring large load currents. It has a wide input voltage range of 0.15V – 5V and can detect both high side and low side current sensing. It also features an over-current detection output that can be set to provide an active-low or active-high output when an overload condition is detected. The device is fabricated in a space-saving, 20-lead 3x3mm² WQFN package.