DESCRIPTION

The MPQ5850 is a smart diode controller that

can drive an external N-channel MOSFET to

replace a Schottky diode for reverse input

protection. The device’s 20mV ultra-low dropout

minimizes power loss and enables a low

minimum input voltage, which makes the

MPQ5850 well-suited for cold-crank conditions

in automotive applications. The 4μA shutdown

current also makes the device ideal for batterypowered

applications. The ultra-fast transient

response meets stringent ISO16750

requirements.

The MPQ5850 integrates an internal boost to

provide a boost voltage that turns on the external

N-channel MOSFET, even at a low input voltage

(VIN). An open-drain, power good signal

indicates when the external N-channel MOSFET

is fully on.

The MPQ5850 is available in a TSOT23-8

(2mmx3mm) package.

FEATURES

• Built to Handle Tough Automotive

Transients:

o -36V Blocking Voltage

o Load Dump Up to 42V

o Cold Crank Down to 0V

o Rectifies AC Frequency Up to 100kHz

o Strong Gate Drive Ability: 170mA Pull-

Up and 430mA Pull-Down

• Extended Vehicle Battery Life:

o Low Quiescent Current in Standby

Mode (4μA)

o Low Quiescent Current in Steady State

(30μA)

• Reduced Board Size:

o Available in a TSOT23-8 (2mmx3mm)

Package

• Additional Features:

o 20mV Ultra-Low Dropout

o Integrates a Boost Converter

o Power Good (PG) Indication for RES

Out of Regulation, Fast Pull-Up, and

Part Disabling

o Available in AEC-Q100 Grade 1

APPLICATIONS

• Automotive System Protection

• Automotive ADAS Systems (Cameras)

• Automotive Infotainment Systems, Including

Digital Clusters and Head Units

• Battery-Powered Systems