FAN3100 Fairchild Semiconductor, FAN3100 Datasheet

FAN3100

Manufacturer Part Number

FAN3100

Description

Single 2A High-speed, Low-side Gate Driver

Manufacturer

Fairchild Semiconductor

Datasheet

1.FAN3100.pdf (21 pages)

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FAN3100 • Rev. 1.0.1

FAN3100

Single 2A High-Speed, Low-Side Gate Driver

Features

Applications

Functional Pin Configurations

3A Peak Sink/Source at V

4.5 to 18V Operating Range

2.5A Sink / 1.8A Source at V

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

Switch-Mode Power Supplies

High-Efficiency MOSFET Switching

Synchronous Rectifier Circuits

DC-to-DC Converters

Motor Control

Figure 1. 2x2mm 6-Lead MLP (Top View)

= 12V

= 6V

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.

Figure 2. SOT23-5 (Top View)

April 2008

www.fairchildsemi.com

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