MIC4478/4479/4480
32V Low-Side Dual MOSFET Drivers General Description Features The MIC4478, MIC4479, and MIC4480 are low-side dual
MOSFET drivers are designed to switch N-channel
enhancement type MOSFETs from TTL-compatible control
signals for low-side switch applications. The MIC4478 is
dual non-inverting, the MIC4479 is dual inverting, and the
MIC4480 is complimentary non-inverting and inverting.
These drivers feature short delays and high peak currents
to produce precise edges and rapid rise and fall times. +4.5V to +32V operation 300ВµA typical supply quiescent current 2.5A nominal peak output per channel
-6О© high-side typical output resistance
-3Ω low-side typical output resistance Active-high driver enable inputs with internal pull-ups Operates with low-side switch circuits –40°C to +125°C ambient temperature range ESD protection Dual inverting, dual non-inverting, and inverting + noninverting versions 8-pin SOIC (ePAD and non-ePAD) The MIC4478/4479/4480 are powered from a +4.5V to
+32V supply voltage. The on-state gate drive output
voltage is approximately equal to the supply voltage (no
internal regulators or clamps).
In a low-side configuration, the drivers can control a
MOSFET that switches any voltage up to the rating of the
MOSFET. The MIC4478/4479/4480 are available in the 8lead SOIC (ePAD and non-ePAD) package and are rated
for the –40°C to +125°C ambient temperature range.
Datasheets and support documentation are available on
Micrel’s web site at: www.micrel.com. Applications Synchronous switch-mode power supplies Secondary side synchronous rectification Typical Application Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 http://www.micrel.com December 9, 2014 Revision 1.0 Micrel, Inc. MIC4478/4479/4480 Ordering Information
Part Number Marking Configuration Junction Temp. Range Package Lead Finish MIC4478YM 4478YM Dual Non-Inverting –40°C to +125°C 8-pin SOIC Pb-Free 4478YME Dual Non-Inverting –40°C to +125°C 8-pin ePAD SOIC Pb-Free 4479YM Dual Inverting –40°C to +125°C 8-pin SOIC Pb-Free 4479YME Dual Inverting –40°C to +125°C 8-pin ePAD SOIC Pb-Free 4480YM Inverting + Non-Inverting –40°C to +125°C 8-pin SOIC Pb-Free 4480YME Inverting + Non-Inverting –40°C to +125°C 8-pin ePAD SOIC Pb-Free MIC4478YME
MIC4479YM
MIC4479YME …