3.2 V to 65 V reverse battery protection in a SOT-23-8
The LM74501QDDFRQ1: Its 3.2 V to 65 V operating range covers 12 V and 24 V automotive electrical systems, including cold-crank dips and load-dump transients within the abs-max envelope. Housed in a SOT-23-8 package (supplier device package TSOT-23-8), it mounts on the board with a standard surface-mount footprint.
Single-cell protection with three fault triggers
The IC monitors a single battery cell (1-cell configuration) and asserts protection on three fault conditions: over-current, over-temperature, and short-circuit. The over-current threshold is set by an external sense resistor; the thermal shutdown triggers when the die temperature exceeds the internal limit, protecting the pass FET and the load. Reverse battery protection is the primary function — the IC blocks negative voltage at the input before it reaches the load, eliminating the need for a series Schottky diode and its forward voltage drop. This preserves headroom for the downstream regulator, especially at low input voltages during cranking.
Active lifecycle and compliance for production BOMs
Sourced through authorized distribution channels, the part is quoted to order against a BOM quantity.