MPQ5884-AEC1 E-Fuse and Smart High-Side Power Switch SO7637

MPQ5884-AEC1 E-Fuse and Smart High-Side Power Switch SO7637

The MPQ5884 is an automotive-grade, low- resistance e-fuse and smart high-side power switch with low quiescent current (IQ) mode.

Key Specifications

Features

• Built to Handle Tough Automotive Transients o Load Dump up to 80V o Cold Crank down to 6V o Reverse Battery Protection o Available in AEC-Q100 Grade 1
• Cooler Thermals Integrated 4.5mΩ MOSFET
• Extends Vehicle Battery Life o Low Quiescent Current (IQ) Mode o 1μA Extremely Low Shutdown Current (IOFF)
• Additional Features o 110mJ Repetitive Unclamped Inductive Switching (UIS) Energy o Available in a QFN-30 (5mmx6mm) Package with Wettable Flanks
• Functional Safety System Design Capable o MPSafeTM Compatible – Functional Safety Supporting Document Available

Typical Application Circuit

Applications

• Relay Replacements
• Ignition, Heaters, and Motors
• Inductive, Capacitive, and Resistive Loads

Design Notes

• The current-limit threshold must stay inside the SOA of the pass device at the applied voltage, including startup inrush.
• Hot-swap inrush control is set by the slew rate on the gate or the dV/dt capacitor — too fast trips the upstream supply.
• Reverse-current blocking behaviour differs between ideal-diode and load-switch topologies; pick the one that matches the fault you are protecting against.
• Route the fault flag to a pin the firmware actually polls; a latch-off protection with no report looks like a dead board in the field.

Common Questions