VIN

Q1

D

VOUT

S

G

LM74610-Q1

Vcap

Gate Drive

Gate Pull Down

Anode

Cathode

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

LM74610-Q1

SNOSCZ1A – JULY 2015 – REVISED OCTOBER 2015

LM74610-Q1 Zero IQ Reverse Polarity Protection Smart Diode Controller

1 Features

3 Description

The LM74610-Q1 is a controller device that can be

1

•

Qualified for Automotive Applications

used with an N-Channel MOSFET in a reverse

•

AEC-Q100 Qualified With the Following Results:

polarity protection circuitry. It is designed to drive an

–

Exceeds HBM ESD Classification Level 2

external MOSFET to emulate an ideal diode rectifier

when connected in series with a power source. A

–

Device CDM ESD Classification Level C4B

unique advantage of this scheme is that it is not

•

Maximum reverse voltage of 45 V

referenced to ground and thus has Zero Iq.

•

No Positive Voltage limitation to Anode terminal

The LM74610-Q1 controller provides a gate drive for

•

Charge Pump Gate Driver for external N-Channel

an external N-Channel MOSFET and a fast response

MOSFET

internal comparator to discharge the MOSFET Gate

•

Lower Power Dissipation than Schottky

in the event of reverse polarity. This fast pull-down

Diode/PFET solutions

feature limits the amount and duration of reverse

current flow if opposite polarity is sensed. The device

•

Low reverse leakage current

design

also

meets

CISPR25

Class

5

EMI

•

Zero IQ

specifications and automotive ISO7637 transient

•

Fast 2µs Response to Reverse Polarity

requirements with a suitable TVS diode.

•

-40°C to 125°C Operating Ambient Temperature

Device Information(1)

•

Can be used in OR-ing Applications

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

Meets CISPR25 EMI Specification

LM74610-Q1

VSSOP (8)

3.0 mm x 5.0 mm

•

Meets Automotive ISO7637 Transient

(1) For all available packages, see the orderable addendum at

Requirements with a suitable TVS Diode

the end of the datasheet.

2 Applications

•

ADAS

•

Infotainment Systems

•

Power Tools (Industrial)

•

Transmission Control Unit (TCU)

•

Battery OR-ing Applications

Smart Diode Configuration

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.