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