MIC4425 Micrel Semiconductor, MIC4425 Datasheet

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MIC4425

Manufacturer Part Number
MIC4425
Description
Manufacturer
Micrel Semiconductor
Datasheets

Specifications of MIC4425

Case
SOP8

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MIC4423/4424/4425
General Description
The MIC4423/4424/4425 family are highly reliable BiCMOS/
DMOS buffer/driver/MOSFET drivers. They are higher output
current versions of the MIC4426/4427/4428, which are
improved versions of the MIC426/427/428. All three families
are pin-compatible. The MIC4423/4424/4425 drivers are
capable of giving reliable service in more demanding electrical
environments than their predecessors. They will not latch
under any conditions within their power and voltage ratings.
They can survive up to 5V of noise spiking, of either polarity,
on the ground pin. They can accept, without either damage or
logic upset, up to half an amp of reverse current (either
polarity) forced back into their outputs.
The MIC4423/4424/4425 series drivers are easier to use,
more flexible in operation, and more forgiving than other
CMOS or bipolar drivers currently available. Their BiCMOS/
DMOS construction dissipates minimum power and provides
rail-to-rail voltage swings.
Primarily intended for driving power MOSFETs, the MIC4423/
4424/4425 drivers are suitable for driving other loads
(capacitive, resistive, or inductive) which require low-
impedance, high peak currents, and fast switching times.
Heavily loaded clock lines, coaxial cables, or piezoelectric
transducers are some examples. The only known limitation on
loading is that total power dissipated in the driver must be kept
within the maximum power dissipation limits of the package.
Functional Diagram
January 1999
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
INA
INB
2k
2k
0.1mA
0.1mA
Ground Unused Inputs
0.6mA
0.6mA
NONINVERTING
NONINVERTING
1
INVERTING
INVERTING
Features
Dual 3A-Peak Low-Side MOSFET Driver
Reliable, low-power bipolar/CMOS/DMOS construction
Latch-up protected to >500mA reverse current
Logic input withstands swing to –5V
High 3A-peak output current
Wide 4.5V to 18V operating range
Drives 1800pF capacitance in 25ns
Short <40ns typical delay time
Delay times consistent with in supply voltage change
Matched rise and fall times
TTL logic input independent of supply voltage
Low equivalent 6pF input capacitance
Low supply current
Low 3.5 typical output impedance
Output voltage swings within 25mV of ground or V
‘426/7/8-, ‘1426/7/8-, ‘4426/7/8-compatible pinout
Inverting, noninverting, and differential configurations
3.5mA with logic-1 input
350 A with logic-0 input
Bipolar/CMOS/DMOS Process
MIC4423/4424/4425
GND
V
S
OUTA
OUTB
Integrated Component Count:
4 Resistors
4 Capacitors
52 Transistors
MIC4423/4424/4425
Micrel
S
.

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