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FAN3100_09 Datasheet, PDF (1/21 Pages) Fairchild Semiconductor – Single 2A High-Speed, Low-Side Gate Driver | |||
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January 2009
FAN3100
Single 2A High-Speed, Low-Side Gate Driver
Features
 3A Peak Sink/Source at VDD = 12V
 4.5 to 18V Operating Range
 2.5A Sink / 1.8A Source at VOUT = 6V
 Dual-Logic Inputs Allow Configuration as
Non-Inverting or Inverting with Enable Function
 Internal Resistors Turn Driver Off If No Inputs
 13ns Typical Rise Time and 9ns Typical Fall-Time
with 1nF Load
 Choice of TTL or CMOS Input Thresholds
 MillerDrive⢠Technology
 Typical Propagation Delay Time Under 20ns with
Input Falling or Rising
 6-Lead 2x2mm MLP or 5-Pin SOT23 Packages
 Rated from â40°C to 125°C Ambient
Applications
 Switch-Mode Power Supplies
 High-Efficiency MOSFET Switching
 Synchronous Rectifier Circuits
 DC-to-DC Converters
 Motor Control
Description
The FAN3100 2A gate driver is designed to drive an N-
channel enhancement-mode MOSFET in low-side
switching applications by providing high peak current
pulses during the short switching intervals. The driver is
available with either TTL (FAN3100T) or CMOS
(FAN3100C) input thresholds. Internal circuitry provides
an under-voltage lockout function by holding the output
low until the supply voltage is within the operating
range. The FAN3100 delivers fast MOSFET switching
performance, which helps maximize efficiency in high-
frequency power converter designs.
FAN3100 drivers incorporate MillerDrive⢠architecture
for the final output stage. This bipolar-MOSFET
combination provides high peak current during the
Miller plateau stage of the MOSFET turn-on / turn-off
process to minimize switching loss, while providing rail-
to-rail voltage swing and reverse current capability.
The FAN3100 also offers dual inputs that can be
configured to operate in non-inverting or inverting mode
and allow implementation of an enable function. If one
or both inputs are left unconnected, internal resistors
bias the inputs such that the output is pulled low to hold
the power MOSFET off.
The FAN3100 is available in a lead-free finish 2x2mm
6-lead Molded Leadless Package (MLP), for smallest
size with excellent thermal performance, or industry-
standard 5-pin SOT23.
Functional Pin Configurations
Figure 1. 2x2mm 6-Lead MLP (Top View)
© 2007 Fairchild Semiconductor Corporation
FAN3100 ⢠Rev. 1.0.2
Figure 2. SOT23-5 (Top View)
www.fairchildsemi.com
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