MPQ5850-AEC1 Smart Diode Controller SO16750

MPQ5850-AEC1 Smart Diode Controller SO16750

The MPQ5850 is a smart diode controller that can drive an external N-channel MOSFET to replace a Schottky diode for reverse input protection.

Key Specifications

Features

• Extended Vehicle Battery Life: o Low Quiescent Current in Standby Mode (4μA) o Low Quiescent Current in Steady State (30μA)
• Reduced Board Size: o Available in a TSOT23-8 (2mmx3mm) Package

Typical Application Circuit

Applications

• Automotive System Protection
• Automotive ADAS Systems (Cameras)
• Automotive Infotainment Systems, Including Digital Clusters and Head Units

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