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FAN3122TMX Scheda tecnica(PDF) 1 Page - Fairchild Semiconductor

Il numero della parte FAN3122TMX
Spiegazioni elettronici  Single 9A High-Speed, Low-Side Gate Driver
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Produttore elettronici  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN3122TMX Scheda tecnica(HTML) 1 Page - Fairchild Semiconductor

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September 2008
© 2008 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN3121 / FAN3122 • Rev. 1.0.0
FAN3121 / FAN3122
Single 9A High-Speed, Low-Side Gate Driver
Features
Industry-Standard Pin-out with Enable Input
4.5 to 18V Operating Range
11.4A Peak Sink at VDD = 12V
9.7A Sink / 7.1A Source at VOUT = 6V
Inverting Configuration (FAN3121) and
Non-Inverting Configuration (FAN3122)
Internal Resistors Turn Driver Off If No Inputs
23ns/19ns Typical Rise/Fall Times with 10nF Load
20ns Typical Propagation Delay Time
Choice of TTL or CMOS Input Thresholds
MillerDrive™ Technology
Available in Thermally Enhanced 3x3mm 8-Lead
MLP or 8-Lead SOIC Package (Pb-Free Finish)
Rated from –40°C to +125°C
Applications
Synchronous Rectifier Circuits
High-Efficiency MOSFET Switching
Switch-Mode Power Supplies
DC-to-DC Converters
Motor Control
Description
The FAN3121 and FAN3122 MOSFET drivers are
designed to drive N-channel enhancement MOSFETs in
low-side switching applications by providing high peak
current pulses. The drivers are available with either TTL
(FAN312xT) or CMOS (FAN312xC) input thresholds.
Internal circuitry provides an under-voltage lockout
function by holding the output low until the supply
voltage is within the operating range.
FAN312x
drivers
incorporate
the
MillerDrive™
architecture for the final output stage. This bipolar /
MOSFET combination provides the highest peak
current during the Miller plateau stage of the MOSFET
turn-on / turn-off process.
The FAN3121 and FAN3122 drivers implement an
enable function on pin 3 (EN), previously unused in the
industry-standard pin-out. The pin is internally pulled up
to VDD for active HIGH logic and can be left open for
standard operation.
The FAN3121/22 is available in a 3x3mm 8-lead thermally-
enhanced MLP package or an 8-lead SOIC package.
1
2
3
6
7
8
4
5
VDD
GND
EN
IN
VDD
OUT
GND
OUT
1
2
3
6
7
8
4
5
EN
IN
VDD
GND
VDD
GND
OUT
OUT
Figure 1.
FAN3121 Pin Configuration
Figure 2.
FAN3122 Pin Configuration


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