FAN3224TMPX datasheet(1/29 Pages) ONSEMI

Part #	FAN3224TMPX

Description	Dual 4-A High-Speed, Low-Side Gate Drivers

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Manufacturer	ONSEMI [ON Semiconductor]

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Publication Order Number

December-2017, Rev. 2

FAN3224/D

FAN3223 / FAN3224 / FAN3225

Dual 4-A High-Speed, Low-Side Gate Drivers

Features

 Industry-Standard Pinouts

 4.5-V to 18-V Operating Range

 5-A Peak Sink/Source at V

DD = 12 V

 4.3-A Sink / 2.8-A Source at V

OUT = 6 V

 Choice of TTL or CMOS Input Thresholds

 Three Versions of Dual Independent Drivers:

-

Dual Inverting + Enable (FAN3223)

-

Dual Non-Inverting + Enable (FAN3224)

-

Dual-Inputs (FAN3225)

 Internal Resistors Turn Driver Off If No Inputs

 MillerDrive™ Technology

 12-ns / 9-ns Typical Rise/Fall Times (2.2-nF Load)

 Under 20-ns Typical Propagation Delay Matched

w ithin 1 ns to the Other Channel

 Double Current Capability by Paralleling Channels

 8-Lead 3x3 mm MLP or 8-Lead SOIC Package

 Rated from –40°C to +125°C Ambient

 Automotive Qualified to AEC-Q100 (F085 Version)

Applications

 Sw itch-Mode Pow er Supplies

 High-Efficiency MOSFET Sw itching

 Synchronous Rectifier Circuits

 DC-to-DC Converters

 Motor Control

 Automotive-Qualified Systems (F085 version)

Description

The FA N3223-25 family of dual 4 A gate dr ivers is

designed

to

drive

N-channel

enhancement- mode

MOSFETs

in

low -side

sw itching

applications

by

providing high peak current pulses dur ing the short

sw itching intervals. The driver is available w ith either

TTL

or

CMOS

input thresholds.

Internal

circuitry

provides an under-voltage lockout function by holding

the output LOW until the supply voltage is w ithin the

operating range. In addition, the drivers feature matched

internal propagation delays betw een A and B channels

for applications requiring dual gate drives w ith critical

timing, such

as

synchronous

rectifiers. This

also

enables connecting tw o drivers in parallel to effectively

double the current capability driving a single MOSFET.

The

FA N322X

drivers

incorporate

Miller Drive™

architecture for the final output stage. This bipolar-

MOSFET combination provides high current during the

Miller plateau stage of the MOSFET turn-on / turn-off

process to minimize sw itching loss, w hile providing rail-

to-rail voltage sw ing and reverse current capability.

The FAN3223 offers tw o inverting drivers and the

FA N3224 offers tw o non-inverting drivers. Each device

has dual independent enable pins that default to ON if

not connected. In the FA N3225, each channel has dual

inputs of opposite polar ity, w hich allow s configuration as

non-inverting or

inverting w ith an optional enable

function using the second input. If one or both inputs are

left unconnected, internal resistors bias the inputs such

that the output is pulled LOW to hold the pow er

MOSFET OFF.

1

ENA

INA

GND

ENB

VDD

INB

OUTA

OUTB

2

3

4

8

6

5

A

7

B

1

ENB

VDD

OUTA

OUTB

2

3

4

8

6

5

7

A

B

ENA

INA

GND

INB

1

INA+

VDD

OUTA

OUTB

2

3

4

8

6

5

7

INB+

GND

INB

-

INA

-

+

-

A

+

-

B

FAN3223

FAN3224

FAN3225

Figure 1.

Pin Configurations

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