MAX4426_10 [MAXIM]
Dual High-Speed 1.5A MOSFET Drivers; 双高速1.5A MOSFET驱动器
| 型号： | MAX4426_10 |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Dual High-Speed 1.5A MOSFET Drivers |
| 文件： | 总7页 (文件大小：1032K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-0132; Rev 2; 6/06
Dual High-Speed 1.5A MOSFET Drivers
General Description
Features
The MAX4426/4427/4428 are dual monolithic MOSFET
drivers designed to translate TTL/CMOS inputs to high
voltage/current outputs. The MAX4426 is a dual inverting
power MOSFET driver. The MAX4427 is a dual noninvert-
ing power MOSFET driver, and the MAX4428 contains
one inverting section and one noninverting section.
S Upgrade for TSC4426/4427/4428
S Lower On Resistance: 4Ω vs. 7Ω
S Shorter Delay Times: t - 10ns vs. 30ns
D1
t
- 25ns vs. 50ns
D2
S 1.5A Peak Output Current
Delay times are nearly independent of V
(see Typical
DD
S Fast Rise and Fall Times: Typically 20ns with
Operating Characteristics). High-current output drivers
rapidly charge and discharge the gate capacitance of
even the largest power MOSFETs to within millivolts of
the supply rails. This produces the power MOSFETs'
minimum on resistance. The MAX4426/4427/4428's high
speed minimizes power losses in switching power sup-
plies and DC-DC converters.
1000pF Load
S Wide Operating Range: 4.5V to 18V
S Low Power Consumption:1.8mA with Logic 1 Input
200µA with Logic 0 Input
S TTL/CMOS Compatible
S Latchup Protected-Withstand > 500mA Reverse
Current
Applications
S ESD Protected
Switching Power Supplies
DC-DC Converters
Motor Controllers
Pin-Diode Drivers
Charge-Pump Voltage Inverters
Ordering Information
PART
TEMP RANGE
0NC to +70NC
PIN-PACKAGE
8 Plastic DIP
8 SO
MAX4426CPA
MAX4426CSA
MAX4426C/D
MAX4426EPA
MAX4426ESA
MAX4426EJA
MAX4426MJA
0NC to +70NC
0NC to +70NC
Dice*
Pin Configurations
-40NC to +85NC
-40NC to +85NC
-40NC to +85NC
-55NC to +125NC
8 Plastic DIP
8 SO
TOP VIEW
8 CERDIP
8 CERDIP**
N.C.
INA
1
2
3
4
8
7
6
5
N.C.
OUTA
2, 4
7, 5
MAX4426
Ordering Information continued on last page.
*Dice are tested at T = +25°C.
**Contact factory for availability and processing to MIL-STD-883.
GND
INB
V
DD
A
INVERTING
OUTB
DIP/SO
Typical Operating Circuit
N.C.
INA
1
2
3
4
8
7
6
5
N.C.
V
= +18V
DD
OUTA
2, 4
7, 5
MAX4427
0.1µF
4.7µF
GND
INB
V
DD
NONINVERTING
OUTB
DIP/SO
MAX4426
2
7
5
INPUT
INPUT
OUTPUT*
OUTPUT*
N.C.
INA
1
2
3
4
8
7
6
5
N.C.
A
B
OUTA
MAX4428
GND
INB
V
DD
4
OUTB
DIP/SO
_______________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Dual High-Speed 1.5A MOSFET Drivers
ABSOLUTE MAXIMUM RATINGS
Supply Voltage V
to GND.............................................. +20V
Operating Temperature Ranges:
DD
Time V < V
Input Voltage.....................................V
Continuous Power Dissipation (T = +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C)............727mW
SO (derate 5.88mW/°C above +70°C) ........................471mW
CERDIP (derate 8.00mW/°C above +70°C) ................640mW
< V ......................................................... 50ns
MAX442_C_ _..................................................... 0°C to +70°C
MAX442_E_ _.................................................. -40°C to +85°C
MAX442_MJA.............................................. -550°C to +125°C
Storage Temperature Range............................ -55°C to +160°C
Maximum Chip Temperature...........................................+150°C
Lead Temperature (soldering, 10 sec) ...........................+300°C
IL
IN_
IH
+ 0.3V to GND - 0.3V
DD
A
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
DD
= +4.5V to +18V, T = T
A
to T
, unless otherwise specified.)
MAX
MIN
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Logic 1 Input Voltage
Logic 0 Input Voltage
Input Current
V
2.4
V
V
IH
V
0.8
1
IL
I
IN
V
IN
= 0V to 18V
-1
µA
V
DD
25
-
Output High Voltage
Output Low Voltage
V
No load
No load
mV
mV
OH
V
25
10
OL
V
= 0.8V for
IN
4
5
4
5
T
= +25°C
A
A
inverting stages,
= 2.4V for
V
IN
T
T
= T
to
noninverting
= 18V,
stages
MIN
12
10
12
V
DD
MAX
Output Resistance
R
OUT
I
=
ω
LOAD
V
IN
= 2.4V for
10mA
T
= +25°C
A
A
inverting stages,
= 0.8V for
V
IN
T
T
= T
to
noninverting
stages
MIN
MAX
Peak Output Current
Power-Supply Current
I
V
= 18V
DD
1.5
1.8
2.5
0.2
0.3
20
25
20
25
10
15
25
30
A
PK
4.5
8.0
0.4
0.6
30
40
30
40
30
40
50
60
V
IN
= +3V for both
T
T
= +25°C
A
A
inputs
= T
to T
MIN
MAX
MAX
I
mA
SUPP
V
IN
= 0V for both
T
T
= +25°C
A
A
inputs
= T
to T
MIN
T
T
= +25°C
A
A
Rise Time (Note 1)
Fall Time (Note 1)
t
ns
ns
ns
ns
R
= T
to T
MIN
MAX
MAX
MAX
MAX
T
T
= +25°C
A
A
t
F
= T
to T
MIN
T
T
= +25°C
A
A
t
t
D1
D2
= T
to T
MIN
Delay Time (Note 1)
T
T
= +25°C
A
A
= T
to T
MIN
Note 1: Switching times guaranteed by design, not tested. See Figure 1 for timing measuremenl circuit.
2
Dual High-Speed 1.5A MOSFET Drivers
Typical Operating Characteristics
MAX4426 RISE AND FALL TIME
vs. SUPPLY VOLTAGE
MAX4426 DELAY TIME
vs. SUPPLY VOLTAGE
MAX4426 RISE AND FALL TIME
vs. TEMPERATURE
70
60
50
40
30
20
10
0
70
60
50
40
30
20
10
0
40
30
20
C = 1000pF
T = +25°C
A
C = 1000pF
T = +25°C
A
C = 1000pF
L
L
L
V
DD
= +18V
t , t
R
F
t
t
F
t
t
D2
D1
R
10
0
5
10
15
20
5
10
15
20
-50 -25
0
25
50
75 100 125
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
MAX4426 DELAY TIME
vs. TEMPERATURE
MAX4426 SUPPLY CURRENT
vs. CAPACITIVE LOAD
MAX4426 RISE AND FALL TIME
vs. CAPACITIVE LOAD
35
30
25
20
15
10
5
80
70
60
50
40
30
20
10
0
1k
100
10
400kHz
T = +25°C
A
C = 1000pF
T = +25°C
L
A
V
DD
= +18V
V
DD
= +18V
V
DD
= +16V
t
t
D2
t , t
R
F
200kHz
D1
20kHz
0
0
-50 -25
0
25
50
75 100 125
10
100
1000
10,000
10
100
1000
10,000
TEMPERATURE (°C)
CAPACITIVE LOAD (pF)
CAPACITIVE LOAD (pF)
MAX4426 SUPPLY CURRENT
vs. FREQUENCY
MAX4426 OUTPUT HIGH VOLTAGE
vs. SOURCE CURRENT
MAX4426 OUTPUT LOW VOLTAGE
vs. SOURCE CURRENT
30
20
10
0
0.6
0.3
0
0.6
0.3
0
T = +25°C
C = 1000pF
L
V
= +8V
V
DD
= +8V
A
T = +25°C
T = +25°C
A
DD
A
V
= +18V
DD
V
V
= +13V
DD
DD
V
DD
= +13V
V
= +10V
DD
V
DD
= +5V
V
= +18V
= +18V
DD
1
10
100
1000
0
10 20 30 40 50 60 70 80 90 100
SOURCE CURRENT (mA)
0
10 20 30 40 50 60 70 80 90 100
SOURCE CURRENT (mA)
FERQUENCY (kHz)
3
Dual High-Speed 1.5A MOSFET Drivers
Power Dissipation
Applications Information
The MAX4426/4427/4428 have easy-to-drive inputs.
However, these inputs must never be allowed to stay
The MAX4426/4427/4428 power dissipation consists of
input inverter losses, crowbar current through the output
devices, and output current (either capacitive or resis-
tive). The sum of these must be kept below the maximum
power dissipation limit.
between V and V for more than 50ns. Unused inputs
IH
IL
should always be connected to ground to minimize sup-
ply current. Drivers can be paralleled on the MAX4426 or
MAX4427 by tying both Inputs together and both outputs
together.
The DC input inverter supply current is 0.2mA when both
inputs are low and 2mA when both inputs are high. The
crowbar current through an output device making a tran-
sition is approximately 100mA for a few nanoseconds.
This is a small portion of the total supply current, except
for high switching frequencies or a small load capaci-
tance (100pF).
Supply bypassing and grounding are extremely impor-
tant with the MAX4426/4427/4428, as the peak supply
current can be as high as 3A, which is twice the peak
output current. Ground drops are a form of negative
feedback with inverters, and hence will degrade the
delay and transition time of the MAX4426/MAX4428.
The MAX4426/4427/4428 power dissipation when driv-
ing a ground-referenced resistive load is:
Suggested bypass capacitors are a 4.7µF (low ESR)
capacitor in parallel with a 0.1µF ceramic capacitor,
mounted as close as possible to the MAX4426/4427/4428.
Use a ground plane if possible or separate ground
returns for inputs and outputs. Output voltage ringing
can be minimized with a 5Ω to 20Ω resistor in series with
the output, but this will degrade output transition time.
Ringing may be undesirable due to the large current that
flows through capacitive loads when the voltage across
these loads transitions quickly.
2
P = (D) (r
) (I
)
ON(MAX) LOAD
whereDisthepercentageoftimetheMAX4426/4427/4428
output pulls high, r is the MAX4426/4427/4428
ON(MAX)
maximum on resistance, and I
4428 load current.
is the MAX4426/4427/
LOAD
For capacitive loads. the power dissipation is:
P = (C
) (V 2) (FREQ)
LOAD
DD
where C
is the capacItive load. V
is the
DD
LOAD
MAX4426/4427/4428 supply voltage, and FREO is the
toggle frequency.
Operation at the upper end of the supply voltage range
(> 15V) requires that a capacitance of at least 50pF be
present at the outputs. This prevents the supply voltage
provided to the die (which can be different from that
seen at the Ie supply pin) from exceeding the 20V abso-
lute maximum rating, due to overshoot. Since at least
50pF of gate capacitance is present in all higher power
FETs, this requirement is easily met.
4
Dual High-Speed 1.5A MOSFET Drivers
Ordering Information (continued)
V
DD
= +18V
PART
TEMP RANGE
0NC to +70NC
PIN-PACKAGE
8 Plastic DIP
8 SO
MAX4427CPA
MAX4427CSA
MAX4427C/D
MAX4427EPA
MAX4427ESA
MAX4427EJA
MAX4427MJA
MAX4428CPA
MAX4428CSA
MAX4428C/D
MAX4428EPA
MAX4428ESA
MAX4428EJA
MAX4428MJA
4.7µF
0.1µF
0NC to +70NC
MAX4428
0NC to +70NC
Dice*
INPUT
INPUT
OUTPUT
1000pF
-40NC to +85NC
-40NC to +85NC
-40NC to +85NC
-55NC to +125NC
0NC to +70NC
8 Plastic DIP
8 SO
8 CERDIP
8 CERDIP**
8 Plastic DIP
8 SO
OUTPUT
1000pF
0NC to +70NC
INPUT RISE
AND FALL +5V
TIMES = 5ns
INPUT
0NC to +70NC
Dice*
90%
-40NC to +85NC
-40NC to +85NC
-40NC to +85NC
-55NC to +125NC
8 Plastic DIP
8 SO
10%
+0.4V
t
D1
t
D2
8 CERDIP
8 CERDIP**
+18V
90%
90%
INVERTING
OUTPUT
10%
10%
*Dice are tested at T = +25°C.
**Contact factory for availability and processing to MIL-STD-883.
0V
A
t
t
R
F
t
t
D2
D1
+18V
NONINVERTING
OUTPUT
90%
90%
10%
10%
Chip Topography
0V
t
R
t
F
Figure 1. Inverting and Noninverting Test Circuit
SUBSTRATE CONNECTED TO V
TRANSISTOR COUNT: 26.
;
DD
MAX4427/MAX4428
5
Dual High-Speed 1.5A MOSFET Drivers
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to www.maxim-ic.com/packages.)
6
Dual High-Speed 1.5A MOSFET Drivers
Revision History
REVISION REVISION
PAGES
DESCRIPTION
CHANGED
NUMBER
DATE
2
6/06
—
—
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.
Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
7
©
2006 Maxim Integrated Products
Maxim is a registered trademark of Maxim Integrated Products, Inc.
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