MIC4420 Datasheet

  • MIC4420

  • Micrel Semiconductor [6A-Peak Low-Side MOSFET Driver Bipola...

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MIC4420/4429
Micrel
MIC4420/4429
6A-Peak Low-Side MOSFET Driver
Bipolar/CMOS/DMOS Process
General Description
MIC4420, MIC4429 and MIC429 MOSFET drivers are
tough, efficient, and easy to use. The MIC4429 and MIC429
are inverting drivers, while the MIC4420 is a non-inverting
driver.
They are capable of 6A (peak) output and can drive the
largest MOSFETs with an improved safe operating mar-
gin. The MIC4420/4429/429 accepts any logic input from
2.4V to V
S
without external speed-up capacitors or resistor
networks. Proprietary circuits allow the input to swing
negative by as much as 5V without damaging the part.
Additional circuits protect against damage from electro-
static discharge.
MIC4420/4429/429 drivers can replace three or more dis-
crete components, reducing PCB area requirements,
simplifying product design, and reducing assembly cost.
Modern BiCMOS/DMOS construction guarantees freedom
from latch-up. The rail-to-rail swing capability insures ad-
equate gate voltage to the MOSFET during power up/
down sequencing.
Features
鈥?CMOS Construction
鈥?Latch-Up Protected: Will Withstand >500mA
Reverse Output Current
鈥?Logic Input Withstands Negative Swing of Up to 5V
鈥?Matched Rise and Fall Times ................................ 25ns
鈥?High Peak Output Current ............................... 6A Peak
鈥?Wide Operating Range ............................... 4.5V to 18V
鈥?High Capacitive Load Drive ........................... 10,000pF
鈥?Low Delay Time ............................................. 55ns Typ
鈥?Logic High Input for Any Voltage From 2.4V to V
S
鈥?Low Equivalent Input Capacitance (typ) ................. 6pF
鈥?Low Supply Current .............. 450碌A With Logic 1 Input
鈥?Low Output Impedance ......................................... 2.5鈩?/div>
鈥?Output Voltage Swing Within 25mV of Ground or V
S
Applications
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Switch Mode Power Supplies
Motor Controls
Pulse Transformer Driver
Class-D Switching Amplifiers
Functional Diagram
V
S
0.4mA
0.1mA
MIC4429
INVERTING
OUT
IN
2k鈩?/div>
MIC4420
NON-INVERTING
GND
5-32
April 1998

MIC4420 PDF文件相关型号

MIC4420BN,MIC4429CT

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