FAN3100_11 Datasheet, PDF (1/22 Pages) Fairchild Semiconductor – Single 2A High-Speed, Low-Side Gate Driver

January 2011
FAN3100
Single 2A High-Speed, Low-Side Gate Driver
Features
 3A Peak Sink/Source at V_DD = 12V
 4.5 to 18V Operating Range
 2.5A Sink / 1.8A Source at V_OUT = 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 –40°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. 1.0.3
Figure 2. SOT23-5 (Top View)
www.fairchildsemi.com