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