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PDF MIC4422 Data sheet ( Hoja de datos )
| Número de pieza | MIC4422 | |
| Descripción | 9A-Peak Low-Side MOSFET Driver | |
| Fabricantes | Micrel Semiconductor | |
| Logotipo |  |
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1. MIC4422  Hay una vista previa y un enlace de descarga de MIC4422 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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MIC4421/4422
Micrel, Inc.
MIC4421/4422
9A-Peak Low-Side MOSFET Driver
Bipolar/CMOS/DMOS Process
General Description
MIC4421 and MIC4422 MOSFET drivers are rugged, ef-
ficient, and easy to use. The MIC4421 is an inverting driver,
while the MIC4422 is a non-inverting driver.
Both versions are capable of 9A (peak) output and can drive
the largest MOSFETs with an improved safe operating mar-
gin. The MIC4421/4422 accepts any logic input from 2.4V to
VS 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 electrostatic discharge.
MIC4421/4422 drivers can replace three or more discrete
components, reducing PCB area requirements, simplifying
product design, and reducing assembly cost.
Modern Bipolar/CMOS/DMOS construction guarantees
freedom from latch-up. The rail-to-rail swing capability of
CMOS/DMOS insures adequate gate voltage to the MOS-
FET during power up/down sequencing. Since these devices
are fabricated on a self-aligned process, they have very low
crossover current, run cool, use little power, and are easy
to drive.
Features
• BiCMOS/DMOS Construction
• Latch-Up Proof: Fully Isolated Process is Inherently
Immune to Any Latch-up.
• Input Will Withstand Negative Swing of Up to 5V
• Matched Rise and Fall Times ............................... 25ns
• High Peak Output Current ...............................9A Peak
• Wide Operating Range .............................. 4.5V to 18V
• High Capacitive Load Drive ........................... 47,000pF
• Low Delay Time .............................................30ns Typ.
• Logic High Input for Any Voltage from 2.4V to VS
• Low Equivalent Input Capacitance (typ) ................. 7pF
• Low Supply Current .............. 450µA With Logic 1 Input
• Low Output Impedance .........................................1.5Ω
• Output Voltage Swing to Within 25mV of GND or VS
Applications
• Switch Mode Power Supplies
• Motor Controls
• Pulse Transformer Driver
• Class-D Switching Amplifiers
• Line Drivers
• Driving MOSFET or IGBT Parallel Chip Modules
• Local Power ON/OFF Switch
• Pulse Generators
Functional Diagram
0.1mA
IN 2kΩ
0.3mA
MIC4421
INVERTING
VS
MIC4422
NONINVERTING
GND
OUT
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
August 2005
1
M9999-081005
1 page  
MIC4421/4422
Typical Characteristics
Rise Time
220 vs. Supply Voltage
200
180
160
140
120 47,000pF
100
80
60 22,000pF
40 10,000pF
20
0 4 6 8 10 12 14 16
SUPPLY VOLTAGE (V)
18
Rise Time
300 vs. Capacitive Load
250
5V
200
150
10V
100
50 18V
0 100
1000
10k
100k
CAPACITIVE LOAD (pF)
Supply Current
vs. Capacitive Load
220
200 VS = 18V
180
160
140
120
100
1 MHz
80
60
40
20
0 100
1000
10k
100k
CAPACITIVE LOAD (pF)
Supply Current
vs. Frequency
180
160 VS = 18V
140
120
100
80
60
40
20
0 10k
100k
1M
FREQUENCY (Hz)
10M
August 2005
Fall Time
vs. Supply Voltage
220
200
180
160
140
120 47,000pF
100
80
60 22,000pF
40 10,000pF
20
0 4 6 8 10 12 14 16 18
SUPPLY VOLTAGE (V)
Fall Time
300 vs. Capacitive Load
250
200 5V
150
10V
100
18V
50
0 100
1000
10k
100k
CAPACITIVE LOAD (pF)
Supply Current
vs. Capacitive Load
150
VS = 12V
120
90
60
30 1 MHz
0 100
1000
10k
100k
CAPACITIVE LOAD (pF)
Supply Current
vs. Frequency
120
VS = 12V
100
80
60
40
20
0 10k
100k
1M
FREQUENCY (Hz)
10M
5
Micrel, Inc.
Rise and Fall Times
vs. Temperature
60
CL = 10,000pF
50 VS = 18V
40 tFALL
30
20 tRISE
10
0 -40 0
40 80 120
TEMPERATURE (°C)
Crossover Energy
10-7 vs. Supply Voltage
PER TRANSITION
10-8
10-9 4
6 8 10 12 14 16 18
VOLTAGE (V)
Supply Current
vs. Capacitive Load
75
VS = 5V
60
45
30
15 1 MHz
0 100
1000
10k
100k
CAPACITIVE LOAD (pF)
Supply Current
vs. Frequency
60
VS = 5V
50
40
30
20
10
0 10k
100k
1M
FREQUENCY (Hz)
10M
M9999-081005
5 Page 
MIC4421/4422
Package Information
PIN 1
INCH (MM)
0.370 (9.40)
0.125 (3.18)
0.018 (0.57)
0.100 (2.54)
MAX )
0.130 (3.30)
0.0375 (0.952)
8-Pin Plastic DIP (N)
PIN 1
0.245 (6.22)
0.300 (7.62)
0.013 (0.330)
0.010 (0.254)
0.150 (3.81)
INCHES (MM)
0.013 (0.33)
TYP
0.0040 (0.102)
45° 0.010 (0.25)
0.007 (0.18)
0.045 (1.14)
0.189 (4.8)
0°–8 °
PLANE
0.016 (0.40)
0.228 (5.79)
8-Pin SOIC (M)
Micrel, Inc.
August 2005
11
M9999-081005
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet MIC4422.PDF ] | |
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