FAN3226 /FAN3227 /FAN3228 /FAN3229
Dual 2-A High-Speed, Low-SideGate Drivers
Features
Description
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Industry-Standard Pinouts
The FAN3226-29 family of dual 2 A gate drivers is
designed to drive N-channel enhancement-mode
MOSFETs in low -side sw itching applications by
providing high peak current pulses during 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 enables
connecting tw o drivers in parallel to effectively double
the current capability driving a single MOSFET.
4.5-V to 18-V Operating Range
3-A Peak Sink/Source at VDD = 12 V
2.4 A-Sink / 1.6-A Source at VOUT = 6 V
Choice of TTL or CMOS Input Thresholds
Four Versions of Dual Independent Drivers:
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-
-
Dual Inverting + Enable (FAN3226)
Dual Non-Inverting + Enable (FAN3227)
Dual Inputs in Tw o Pin-Out Configurations:
o Compatible w ith FAN3225x (FAN3228)
o Compatible w ith TPS2814D (FAN3229)
The FAN322X drivers incorporate MillerDrive™
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.
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Internal Resistors Turn Driver Off If No Inputs
MillerDrive™ Technology
12-ns / 9-ns Typical Rise/Fall Times (1-nF Load)
Under 20-ns Typical Propagation Delay Matched
w ithin 1 ns to the Other Channel
The FAN3226 offers two inverting drivers and the
FAN3227 offers tw o non-inverting drivers. Each device
has dual independent enable pins that default to ON if
not connected. In the FAN3228 and FAN3229, each
channel has dual inputs of opposite polarity, w hich
allows 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.
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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
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Sw itch-Mode Pow er Supplies
High-Efficiency MOSFET Sw itching
Synchronous Rectifier Circuits
DC-to-DC Converters
Related Resources
http://w w w.onsemi.com/pub/Collateral/AN-6069.pdf.pdf
Motor Control
Servers
Automotive-Qualified Systems (F085 version)
ENA
1
8
ENB
ENA
1
8
ENB
1
8
INA+
INA+
1
8
GND
INA-
+
-
+
-
INA
GND
INB
2
3
4
A
7
6
5
OUTA
VDD
INA
GND
INB
2
3
4
A
7
6
5
OUTA
VDD
INB+
GND
2
3
4
A
B
7
6
5
OUTA
VDD
2
3
4
A
B
7
6
5
OUTA
VDD
INA
-
INB+
+
-
+
-
OUTB
OUTB
OUTB
OUTB
B
B
INB-
INB
-
FAN3226
FAN3227
FAN3228
FAN3229
Figure 1. Pin Configurations
© 2007 Semiconductor Components Industries, LLC.
October-2017, Rev. 2
Publication Order Number:
FAN3229T-F085/D
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