MIC4414 Datasheet, PDF (1/14 Pages) Micrel Semiconductor – 1.5A, 4.5V to 18V Low-Side MOSFET Driver

MIC4414/4415
1.5A, 4.5V to 18V,
Low-Side MOSFET Driver
General Description
The MIC4414 and MIC4415 are low-side MOSFET drivers
designed to switch an N-channel enhancement type
MOSFET in low-side switch applications. The MIC4414 is
a non-inverting driver and the MIC4415 is an inverting
driver. These drivers feature short delays and high peak
current to produce precise edges and rapid rise and fall
times.
The MIC4414/15 are powered from a 4.5V to 18V supply
and can sink and source peak currents up to 1.5A,
switching a 1000pF capacitor in 12ns. The on-state gate
drive output voltage is approximately equal to the supply
voltage (no internal regulators or clamps). High supply
voltages, such as 10V, are appropriate for use with
standard N-channel MOSFETs. Low supply voltages, such
as 5V, are appropriate for use with many logic-level N-
channel MOSFETs.
In a low-side configuration, the driver can control a
MOSFET that switches any voltage up to the rating of the
MOSFET.
The MIC4414 and MIC4415 are available in an ultra-small
4-pin 1.2mm x 1.2mm thin QFN package and is rated for
–40°C to +125°C junction temperature range.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Features
 Ultra-small 4-pin 1.2mm x 1.2mm thin QFN package
 +4.5V to +18V operating supply voltage range
 1.5A peak current
– 3.5Ω output resistance at 18V
– 9Ω output resistance at 5V
 Low steady-state supply current
– 77µA control input low
– 445µA control input high
 12ns rise and fall times into 1000pF load
 MIC4414 (non-inverting)
 MIC4415 (inverting)
 -40°C to +125°C junction temperature range
Applications
 Switch mode power supplies
 Solenoid drivers
 Motor driver
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Typical Application
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
August 2012
M9999-080112-A