MPQ77240FS-AEC1 5-16V, 0.8A High-Side Switch QFN-17

MPQ77240FS-AEC1 5-16V, 0.8A High-Side Switch QFN-17

The MPQ77240FS is a quad-channel, smart, high-side power switch for nominal currents up to 0.8A load per channel.

Key Specifications

Features

• Designed for Automotive Applications o 5V to 16V Input Voltage (VINx) Range o 26V Short to Battery Protection with Back-to-Back MOSFET o Available in AEC-Q100 Grade 1
• 180mΩ On State Channel Resistance for Cooler Thermals
• Reduces Board Size o Available in a TQFN-17 (3mmx4mm) Package with Wettable Flanks
• High-Accuracy Current Sense Capability: ±3% at 1A
• 5μA Low Standby Current Extends Vehicle Battery Life
• Vast Flexibility o Separate Power Supply Design Supports Two Power Rails o Support Output with Parallel Channels o Configurable Current Limit and SS

Typical Application Circuit

Applications

• Smart High-Side Switch for Cameras and Radars in Infotainment and ADAS Systems

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