DESCRIPTION
The MPQ5872 is a smart high-side load switch
for nominal 2A loads. The device features an
input voltage (VIN) as low as 3.5V, and can
withstand load dumps up to 42V. With a small on
resistance (RDS(ON)) in a tiny QFN-8
(2mmx2.5mm) package, MPQ5872 provides a
highly efficient, compact solution.
The device supports both an internal and
configurable, high-accuracy external current
limits. This helps clamp the inrush current under
short-circuit conditions, which improves overall
system reliability. An adjustable start-up slew
rate also helps to reduce inrush current during
start-up.
The FT/CS pin provides high-accuracy current
sensing, which achieves accurate real-time
diagnostics without further calibration. The
voltage on the FT/CS pin represents 1 / KCS of
the load current, where KCS is a constant value
across the temperature and supply voltage. In
addition, the FT/CS pin can report a fault by
pulling up its voltage.
The MPQ5872 features full diagnostics during
both on and off states. By pulling the DIAG_EN
pin up or down, off-state open-load and short-tobattery detection can be enabled or disabled,
respectively. If off-state diagnostics are not
required in the system, the function can be
disabled to reduce the standby current by
connecting DIAG_EN to the GND pin.
The MPQ5872 is available in a QFN-8
(2mmx2.5mm) package with wettable flanks,
and is available in AEC-Q100 Grade 1 or AECQ100-012 Test Grade A.

FEATURES
• Built to Handle Tough Automotive
Transients
o Load Dump Up to 42V
o Cold Crank Down to 3.5V
• Cooler Thermals
o Integrated 60mΩ MOSFET
• Extends Vehicle Battery Life
o Extreme Low Standby Current: 0.5µA
• Reduces Board Size
o Available in a QFN-8 (2mmx2.5mm)
Package
• Vast Flexibility
o Configurable External Current Limit
o Adjustable Start-Up Slew Rate
o 3.3V and 5V Logic Compatible
• Full Diagnostic and Protection Features
o Supports Functional Safety Applications
o High-Accuracy Current Sense: ±4% at
1A and ±6% at 300mA
o On- and Off-State Open-Load and
Short-to-Battery Detection
o Thermal Shutdown Protection
o Available in AEC-Q100 Grade 1
o Available in AEC-Q100-012 Test Grade
A
o Available in a Wettable Flank Package

APPLICATIONS
• Smart Switches for Automotive Infotainment
Systems
• Power Switches for Advanced DriverAssistance Systems (ADAS)
• High-Side Power Switches for Sub-Modules
• General Resistive, Inductive, and Capacitive
Loads