MPQ5873-AEC1 3.5-36V, 3A Smart High-Side Load Switch AEC-Q100 Qualified QFN-8

MPQ5873-AEC1 3.5-36V, 3A Smart High-Side Load Switch AEC-Q100 Qualified QFN-8

The MPQ5873 is a smart high-side load switch for nominal 3A loads.

Key Specifications

Features

• Built to Handle Tough Automotive Transients and AEC-Q100 Requirement o Load Dump Up to 42V o Cold Crank Down to 3.5V o Available in AEC-Q100 Grade 1
• Cooler Thermals o Integrated 60mΩ MOSFET
• Extends Vehicle Battery Life o Extremely Low Standby Current: 0.5µA
• Reduces Board Size o Available in a QFN-8 (2mmx2.5mm) Package o Available in a Wettable Flank Package
• Vast Flexibility o Configurable External Current Limit o Adjustable Start-Up Slew Rate o 3.3V and 5V Logic Compatible
• Functional Safety System Design Capability o Documents Available for MPSafeTM QM System Design

Typical Application Circuit

Applications

• Smart Switches for Automotive Infotainment Systems
• Power Switches for Advanced Driver- Assistance Systems (ADAS)
• High-Side Power Switches for Sub-Modules

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