MPQ5852-AEC1 Smart Diode Controller QFN-13

MPQ5852-AEC1 Smart Diode Controller QFN-13

The MPQ5852 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

• Cooler Thermals o Strong Gate Drive Ability and Small Switching Loss o 20mV Ultra-Low Dropout
• Extends Vehicle Battery Life o Low Quiescent Current (IQ) in Standby (4μA) o Low IQ in Rectify Mode (30μA) o DIAG_EN Pin to Disable Diagnostics for Low-IQ Operation
• Reduces Board Size o Available in a QFN-13 (3mmx3mm) Package o Available in Wettable-Flank Package
• Functional Safety System Design Capability o MPSafeTM Compatible: Functional Safety Supporting Document Available

Typical Application Circuit

Applications

• Automotive System Protection
• Automotive Advanced Driver-Assistance Systems (ADAS)
• Automotive Infotainment Systems: Digital Clusters, Head Units, and Cameras
• Industrial Equipment

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