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PDF MIC4424 Data sheet ( Hoja de datos )
| Número de pieza | MIC4424 | |
| Descripción | Dual 3A-Peak Low-Side MOSFET Driver Bipolar/CMOS/DMOS Process | |
| Fabricantes | Micrel Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MIC4424 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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MIC4423/4424/4425
Micrel, Inc.
MIC4423/4424/4425
Dual 3A-Peak Low-Side MOSFET Driver
Bipolar/CMOS/DMOS Process
General Description
The MIC4423/4424/4425 family are highly reliable BiCMOS/
DMOS buffer/driver/MOSFET drivers. They are higher out-
put 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 ca-
pable 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-imped-
ance, 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.
Note: See MIC4123/4124/4125 for high power and narrow
pulse applications.
Features
• 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
3.5mA with logic-1 input
350µA with logic-0 input
• Low 3.5Ω typical output impedance
• Output voltage swings within 25mV of ground or VS.
• ‘426/7/8-, ‘1426/7/8-, ‘4426/7/8-compatible pinout
• Inverting, noninverting, and differential configurations
Functional Diagram
0.1mA
INA 2kΩ
0.6mA
INVERTING
NONINVERTING
VS
Integrated Component Count:
4 Resistors
4 Capacitors
52 Transistors
OUTA
0.1mA
INB 2kΩ
0.6mA
INVERTING
NONINVERTING
OUTB
Ground Unused Inputs
GND
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
July 2005
1 MIC4423/4424/4425
1 page  
MIC4423/4424/4425
Typical Characteristic Curves
Rise Time vs.
100 Supply Voltage
4700pF
80
60 3300pF
1800pF
1000pF
2200pF
40
20
470pF
0
4 6 8 10 12 14 16 18
VSUPPLY (V)
Fall Time vs.
100 Capacitive Load
80 5V
60 12V
40
20 18V
0
100
1000
10000
CLOAD (pF)
Supply Current vs.
Capacitive Load
100
90 VSUPPLY = 18V
80
70
60
50 500kHz
40
30
20kHz
20 100kHz
10
0
100
1000
10000
CLOAD (pF)
Supply Current
100 vs. Frequency
90 VSUPPLY = 12V
80
70 10000pF
60
50 1000pF
40
30
100pF
3300pF
20
10
0
10 100 1000
FREQUENCY (kHz)
July 2005
Fall Time vs.
100 Supply Voltage
4700pF
80
60 3300pF
1800pF
1000pF
2200pF
40
20
470pF
0
4 6 8 10 12 14 16 18
VSUPPLY (V)
Rise and Fall Time
40 vs. Temperature
VS = 18V
CLOAD = 1800pF
30 TF
20
TR
10
0
-75 -30 15 60 105 150
JUNCTION TEMPERATURE (˚C)
Supply Current
vs. Frequency
100
90 VSUPPLY = 18V
80 10000pF
70
60
50
1000pF
3300pF
40
30 100pF
20
10
0
10 100 1000
FREQUENCY (kHz)
Supply Current vs.
100 Capacitive Load
90 VSUPPLY = 5V
80
70
60
50 2MHz
40
30
100kHz
500kHz
20
10
0
100
1000
10000
CLOAD (pF)
5
Micrel, Inc.
Rise Time
100 vs. Capacitive Load
80 5V
60 12V
40
20 18V
0
100
1000
10000
CLOAD (pF)
Propagation Delay vs.
50 Input Amplitude
VS = 18V
40 CLOAD = 1800pF
30 TD2
20 TD1
10
0
0 2 4 6 8 10 12
INPUT (V)
Supply Current vs.
Capacitive Load
100
90 VSUPPLY = 12V
80 2MHz
70
60
50 500kHz
40
30
20
20kHz
100kHz
10
0
100
1000
10000
CLOAD (pF)
Supply Current
100 vs. Frequency
90 VSUPPLY = 5V
80 10000pF
70
60 4700pF
50 2200pF
40 1000pF
30
20 100pF
10
0
10 100 1000
FREQUENCY (kHz)
MIC4423/4424/4425
5 Page 
MIC4423/4424/4425
Crossover
Energy Loss
10-8
10-9
10-10
0 2 4 6 8 10 12 14 16 18
VIN
NOTE: THE VALUES ON THIS GRAPH REPRESENT THE LOSS SEEN BY BOTH
DRIVERS IN A PACKAGE DURING ONE COMPLETE CYCLE. FOR A SINGLE
DRIVER DIVIDE THE STATED VALUES BY 2. FOR A SINGLE TRANSITION OF A
SINGLE DRIVER, DIVIDE THE STATED VALUE BY 4.
Figure 2.
1250
1000
750
500
SOIC
PDIP
250
0
25 50
75 100 125 150
AMBIENT TEMPERATURE (°C)
Micrel, Inc.
July 2005
11 MIC4423/4424/4425
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet MIC4424.PDF ] | |
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