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 thermallyenhanced
MLP package or an 8-lead SOIC package.