MAXIM MAX4428CPA

19-0132; Rev 2; 6/06
Dual High-Speed 1.5A MOSFET Drivers
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 noninverting power MOSFET driver, and the MAX4428 contains
one inverting section and one noninverting section.
Delay times are nearly independent of VDD (see Typical
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 supplies and DC-DC converters.
Applications
Switching Power Supplies
DC-DC Converters
Motor Controllers
Pin-Diode Drivers
Charge-Pump Voltage Inverters
INA
2
GND
INB
8
N.C.
7
OUTA
3
6
VDD
4
5
OUTB
MAX4426
S Lower On Resistance: 4Ω vs. 7Ω
S Shorter Delay Times: tD1 - 10ns vs. 30ns
tD2 - 25ns vs. 50ns
S 1.5A Peak Output Current
S Fast Rise and Fall Times: Typically 20ns with
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
S ESD Protected
PART
TOP VIEW
1
S Upgrade for TSC4426/4427/4428
Ordering Information
Pin Configurations
N.C.
Features
2, 4
7, 5
INVERTING
1
8 Plastic DIP
MAX4426CSA
0NC to +70NC
8 SO
MAX4426C/D
0NC to +70NC
Dice*
MAX4426EPA
-40NC to +85NC
8 Plastic DIP
MAX4426ESA
-40NC to +85NC
8 SO
MAX4426EJA
-40NC to +85NC
8 CERDIP
MAX4426MJA
-55NC to +125NC
8 CERDIP**
Ordering Information continued on last page.
*Dice are tested at TA = +25°C.
**Contact factory for availability and processing to MIL-STD-883.
Typical Operating Circuit
8
N.C.
INA
2
7
OUTA
GND
3
6
VDD
INB
4
5
OUTB
MAX4427
VDD = +18V
2, 4
7, 5
4.7µF
1
INA
2
GND
3
INB
MAX4426
8
MAX4428
4
0.1µF
NONINVERTING
DIP/SO
N.C.
PIN-PACKAGE
0NC to +70NC
DIP/SO
N.C.
TEMP RANGE
MAX4426CPA
N.C.
7
OUTA
6
VDD
5
OUTB
2
7
INPUT
OUTPUT*
A
4
5
INPUT
OUTPUT*
B
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.
MAX4426/4427/4428
General Description
MAX4426/4427/4428
Dual High-Speed 1.5A MOSFET Drivers
ABSOLUTE MAXIMUM RATINGS
Supply Voltage VDD to GND............................................... +20V
Time VIL < VIN_ < VIH.......................................................... 50ns
Input Voltage......................................VDD + 0.3V to GND - 0.3V
Continuous Power Dissipation (TA = +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
Operating Temperature Ranges:
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
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
(VDD = +4.5V to +18V, TA = TMIN to TMAX, unless otherwise specified.)
PARAMETER
SYMBOL
Logic 1 Input Voltage
VIH
Logic 0 Input Voltage
VIL
Input Current
IIN
CONDITIONS
VIN = 0V to 18V
VOH
No load
Output Low Voltage
VOL
No load
Peak Output Current
Power-Supply Current
ROUT
IPK
ISUPP
TYP
MAX
2.4
Output High Voltage
Output Resistance
MIN
V
-1
0.8
V
1
µA
VDD 25
mV
25
VIN = 0.8V for
inverting stages,
VIN = 2.4V for
noninverting
VDD = 18V, stages
ILOAD =
VIN = 2.4V for
10mA
inverting stages,
VIN = 0.8V for
noninverting
stages
TA = +25°C
4
10
TA = TMIN to
TMAX
5
12
TA = +25°C
4
10
TA = TMIN to
TMAX
5
12
VDD = 18V
1.5
A
VIN = +3V for both
inputs
TA = +25°C
TA = TMIN to TMAX
1.8
4.5
2.5
8.0
VIN = 0V for both
inputs
TA = +25°C
TA = TMIN to TMAX
0.2
0.4
0.3
0.6
tR
TA = +25°C
TA = TMIN to TMAX
20
30
25
40
Fall Time (Note 1)
tF
TA = +25°C
TA = TMIN to TMAX
20
30
25
40
tD1
TA = +25°C
TA = TMIN to TMAX
10
30
15
40
tD2
TA = +25°C
TA = TMIN to TMAX
25
50
30
60
Note 1: Switching times guaranteed by design, not tested. See Figure 1 for timing measuremenl circuit.
2
mV
ω
Rise Time (Note 1)
Delay Time (Note 1)
UNITS
mA
ns
ns
ns
ns
Dual High-Speed 1.5A MOSFET Drivers
tF
20
50
10
30
10
15
tD1
10
10
15
20
-50
25
50
75
100
MAX4426 DELAY TIME
vs. TEMPERATURE
MAX4426 SUPPLY CURRENT
vs. CAPACITIVE LOAD
MAX4426 RISE AND FALL TIME
vs. CAPACITIVE LOAD
tD1
10
5
40
200kHz
30
75
50
100
tR, tF
10
20
20kHz
0
0
25
0
TA = +25°C
VDD = +18V
100
50
10
0
MAX4426/27/28 toc05
60
1k
TIME (ns)
15
400kHz
TA = +25°C
VDD = +16V
70
SUPPLY CURRENT (mA)
MAX4426/27/28 toc04
20
80
125
100
10
1000
10
10,000
100
1000
10,000
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
(VDD - VOUT) (V)
20
VDD = +10V
10
TA = +25°C
VDD = +8V
VDD = +13V
0.3
VDD = +5V
TA = +25°C
0
100
FERQUENCY (kHz)
1000
VDD = +8V
VDD = +13V
0.3
VDD = +18V
0
10
0.6
OUPUT VOLTAGE (V)
VDD = +18V
0.6
MAX4426/27/28 toc07
TA = +25°C
CL = 1000pF
MAX4426/27/28 toc08
TEMPERATURE (°C)
30
125
MAX4426/27/28 toc06
TEMPERATURE (°C)
tD2
1
0
SUPPLY VOLTAGE (V)
25
-25
-25
SUPPLY VOLTAGE (V)
CL = 1000pF
VDD = +18V
-50
20
0
5
20
35
30
tR, tF
tD2
0
5
TIME (ns)
30
10
0
SUPPLY CURRENT (mA)
40
20
tR
CL = 1000pF
VDD = +18V
MAX4426/27/28 toc09
40
30
60
TIME (ns)
TIME (ns)
50
CL = 1000pF
TA = +25°C
TIME (ns)
60
40
MAX4426/27/28 toc02
CL = 1000pF
TA = +25°C
MAX4426 RISE AND FALL TIME
vs. TEMPERATURE
70
MAX4426/27/28t oc01
70
MAX4426 DELAY TIME
vs. SUPPLY VOLTAGE
MAX4426/27/28 toc03
MAX4426 RISE AND FALL TIME
vs. SUPPLY VOLTAGE
VDD = +18V
0
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)
3
MAX4426/4427/4428
Typical Operating Characteristics
MAX4426/4427/4428
Dual High-Speed 1.5A MOSFET Drivers
Applications Information
The MAX4426/4427/4428 have easy-to-drive inputs.
However, these inputs must never be allowed to stay
between VIH and VIL for more than 50ns. Unused inputs
should always be connected to ground to minimize supply current. Drivers can be paralleled on the MAX4426 or
MAX4427 by tying both Inputs together and both outputs
together.
Supply bypassing and grounding are extremely important 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.
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.
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 absolute 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
Power Dissipation
The MAX4426/4427/4428 power dissipation consists of
input inverter losses, crowbar current through the output
devices, and output current (either capacitive or resistive). The sum of these must be kept below the maximum
power dissipation limit.
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 transition 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 capacitance (100pF).
The MAX4426/4427/4428 power dissipation when driving a ground-referenced resistive load is:
P = (D) (rON(MAX)) (ILOAD2)
where D is the percentage of time the MAX4426/4427/4428
output pulls high, rON(MAX) is the MAX4426/4427/4428
maximum on resistance, and ILOAD is the MAX4426/4427/
4428 load current.
For capacitive loads. the power dissipation is:
P = (CLOAD) (VDD2) (FREQ)
where CLOAD is the capacItive load. VDD is the
MAX4426/4427/4428 supply voltage, and FREO is the
toggle frequency.
Dual High-Speed 1.5A MOSFET Drivers
PART
4.7µF
0.1µF
MAX4428
INPUT
OUTPUT
1000pF
INPUT
OUTPUT
1000pF
INPUT RISE
AND FALL +5V
TIMES = 5ns
+0.4V
INPUT
90%
10%
+18V
INVERTING
OUTPUT
0V
90%
0V
90%
10%
10%
tF
PIN-PACKAGE
MAX4427CPA
0NC to +70NC
8 Plastic DIP
MAX4427CSA
0NC to +70NC
8 SO
MAX4427C/D
0NC to +70NC
Dice*
MAX4427EPA
-40NC to +85NC
8 Plastic DIP
MAX4427ESA
-40NC to +85NC
8 SO
MAX4427EJA
-40NC to +85NC
8 CERDIP
MAX4427MJA
-55NC to +125NC
8 CERDIP**
MAX4428CPA
0NC to +70NC
8 Plastic DIP
MAX4428CSA
0NC to +70NC
8 SO
MAX4428C/D
0NC to +70NC
Dice*
MAX4428EPA
-40NC to +85NC
8 Plastic DIP
MAX4428ESA
-40NC to +85NC
8 SO
MAX4428EJA
-40NC to +85NC
8 CERDIP
MAX4428MJA
-55NC to +125NC
8 CERDIP**
*Dice are tested at TA = +25°C.
**Contact factory for availability and processing to MIL-STD-883.
tR
tD1
+18V
NONINVERTING
OUTPUT
tD2
tD1
TEMP RANGE
tD2
90%
90%
10%
tR
Chip Topography
10%
tF
Figure 1. Inverting and Noninverting Test Circuit
SUBSTRATE CONNECTED TO VDD;
TRANSISTOR COUNT: 26.
MAX4427/MAX4428
5
MAX4426/4427/4428
Ordering Information (continued)
VDD = +18V
MAX4426/4427/4428
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
NUMBER
REVISION
DATE
2
6/06
DESCRIPTION
—
PAGES
CHANGED
—
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
© 2006
Maxim Integrated Products 7
Maxim is a registered trademark of Maxim Integrated Products, Inc.
MAX4426/4427/4428
Revision History