What this part is and where it fits
The MAX14723ATP+ from Analog Devices (Maxim Integrated) is an adjustable current-limit IC designed specifically for overvoltage and undervoltage protection in power distribution systems. Its wide 5.5 V to 58 V supply range makes it a natural fit for 12 V, 24 V, and 48 V industrial and automotive power rails where transients can exceed the nominal bus voltage. The part integrates the current-limit adjustment, so you set the threshold with an external resistor rather than relying on a fixed factory trim.
Supply range and temperature — the two specs that decide fit
The 5.5 V minimum supply means this part will not drop out on a heavily loaded 12 V bus during cold-crank conditions where the rail sags to 6 V. The 58 V maximum covers the typical 48 V telecom bus plus the 20 % overvoltage transient that hits when a load dump occurs on a 24 V automotive system. The -40°C to 125°C operating temperature range is the full automotive-grade span, so the part can sit under the hood or on an outdoor industrial control board without derating concerns.
Quiescent current and package — what they mean for the BOM
At 1.4 mA supply current, the MAX14723ATP+ adds negligible overhead to the always-on protection block in battery-backed systems — a key consideration when every milliamp of standby draw eats into the battery budget. The 20-TQFN (4x4) exposed-pad package provides a low thermal resistance path to the PCB copper plane, which matters when the current limit is set near the upper end of the part's capability. The exposed pad must be soldered to a thermal land on the board; the datasheet layout recommendation for the pad via pattern should be followed to keep junction temperature within limits.
Lifecycle and sourcing
The MAX14723ATP+ carries an Active lifecycle status with ROHS3 compliance.