19-0039, Rev 0; 11/92 MMAAIM High-Speed, 6A Single MOSFET Drivers General Description The MAX4420, MAX4429 and MXT429 are single-output MOSFET drivers designed to translate TTL/CMOS inputs to high-voltage/high-current outputs. The low 1.5 out- put impedance and 6A peak current output allow them to rapidly switch high-capacitance power MOSFETs, im- proving efficiency. A 40ns delay time and a 25ns rise or fall time (while driving 2500pF to 18V) minimize power losses during MOSFET switching transitions. The MAX4420/MAX4429/MXT429 interface easily with either CMOS or bipolar switch-mode controllers because their logic inputs draw under 10uA. The outputs swing to within 25mV of GND or the power-supply rail, which can be 4.5V to 18V for the MAX4420/MAX4429, and 7V to 18V for the MXT429. Power-supply quiescent current is typically 45uA and 450uA for logic input low and high, respectively. The MAX4420 has anon inverting output. The MAX4429 and MXT429 have inverting outputs. For dual drivers, refer to the MAX626/MAX627/MAX628 and MAX4426/MAX4427/MAX4428 data sheets. Applications Switching Power Supplies DC-DC Converters Motor Controllers Pin-Diode Drivers Pin Configurations TOP VIEW T Voo [4] |g | Vo Ni 2 r DoE ouT nC" [3] a OUT | AAAXIAA GND [4] Maxaazg [5 leno DIP/SO . Li 4 Vop Li] |g | Von INL 2] 7] out + ; | NC 3 ana 16 | OUT GND | 4 4429 GND 4) uxrag 18 DIP/SO NLC. = NO INTERNAL CONNECTION 1 THIS PIN MAXIMA Features @ TTL/CMOS Compatible (li < 10.4) @ 4.5V to 18V Supply Range (MAX4420/MAX4429) 1.5Q Output Resistance @ 6A Peak Output Current @ 40ns Delay Time 25ns Rise and Fall Times (2500pF Load) @ Output Swings to within 25mV of Vpp and GND Ordering Information PART TEMP.RANGE PIN-PACKAGE | MAX4420CPA ss O0C to +70"C. 8 Plastic DIP | MAX4420CSA OC to 470C = BSO | MAX4420C/D OC to +70C Dice* MAX4420EPA 40C 10 485C SS Plastic DIP CS! MAX4420ESA ss -40'C to 485C SB SO MAXa420MJA-B5'Cto +125 8CERDIP | [tevez O'S t0470C 8 Plastic DIP MAX4429CSA COC to +70. SO SO | [ MaxeezociD _ _0Cto+70'C Dice" MAX4429EPA 40C to +858 Plastic DIP 8 sO MAX4429MJA -85C 10 +125C 8 CERDIP | Ordering information continued on last page. * Dice are specified at Ta = +25C. *Contact factory for availability and processing to MIL-STD-883 and DESC-SMD Typical Operating Circuit Vop - 18V ts, __ eqs Aut | ~~ 14 8! O01, t OUTPUT | ~~ Ci 2500pF O.tpF = INPUT -f {> 7 | MAXUM 6 MAX4429 _ MXT429 | | | | | | | oo Maxim Integrated Products 1 6CVLXW/6CVUXVW/OCPPXUNNMAX4420/MAX4429/MXT429 High-Speed, 6A Single MOSFET Drivers ABSOLUTE MAXIMUM RATINGS Supply Voltage Voo to GND Input Voltage VIN Continuous Power Dissipation (Ta = +70C) +20V -0.3V to (Vpp + 0.3V) Operating Temperature Ranges MAX442_C__ , MXT429C__... MAX442_E__ , MXT429E__ Plastic DIP (derate 9.09mW/"C above +70C) ...... 727mW MAX442_MJA, MXT429MJA .....0...000.. SO (derate 5.88mW/"C above +70C) ............ 471mWw Storage Temperature Range .............. CERDIP (derate 8.00mW/"C above +70C) .. 640mW Lead Temperature (soldering, 10sec) O'C to +70C -40"C to +85C -55C to +125 C -65 C to +160 C +300C 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 (MAX4420/MAX4429 Vop = +4.5V to +18V, MXT429 Vpp = +7V to +18V, Ta = TmINn to Tax, unless otherwise noted.) MAX4420/MAX4429 MXT429 | PARAMETER SYMBOL CONDITIONS UNITS MIN TYP MAX [ MIN TYP MAX | Operating Range Vpb 45 ; Wo} 7 18 Vv | Ta = +25C 045 15 045 5.0 VIN = 3V Ta = TmIN to TMAXx 3.0 12.0 Power Supply Current lob -4 7 ~ oo mA V ov TA = +25C 0.045 0.150 0.045 05 IN = | Ta = TMIN to TMAX 0.400 1.0 Logic 1 Input Voltage VIH 24 2.4 Vv Logic 0 Input Voltage VIL - Vv | IN Leakage Current lIN VIN = OV to Vop +10 +10 HA Output High Voltage VOH No load Vob - 25 Vop- 25 mv Output Low Voltage VOL No load 25 25 mv Peak Output Current IOUT Vop = 18V Ta = +25C ; 6 6 A | Vopb = 18V, Ta = +25C 1.5 2.5 1.5 2.5 Output Resistance ROUT louT = 10mA, _ SF - - Q Vin = 0.8V or 2.4V! TA = TMIN to Tmax 5.0 5.0 Ta = +25C 25-30 25 35 Rise Time (Note 1) tr Figure 1 - - - ns | Ta = TMIN to TMAX 60 70 TA = +28C 25 30 25 35 Fall Time (Note 1) tr Figure 1 ns Ta = TmIN to TMax 60 _ 70 - : Ta = +25C 35 60 35 75 to1 Figure 1 op Delay Time (Note 1) Ta = Twin to TMAX 100 100 | elay Time (Note - oT en ns y Ta = +25C 40 60 40 15 ! tp2 Figure 1 ' _ | Ta = TmIN to TMAX 100. | 120 Note 1: Switching times guaranteed by design, not tested. See Figure 1 for timing measurement circuit, VDD = 18V MAXIMHigh-Speed, 6A Single MOSFET Drivers Typical Operating Characteristics MAX4429 SWITCHING SPEED (INPUT HIGH TO LOW) MAX4429 SWITCHING SPEED (INPUT LOW TO HIGH) INPUT INPUT OUTPUT QUTPUT Von = 4.5V, CL = 2500pF, TIME = 100ns/div Vo = 4.5V, CL - 2500pF, TIME - 100ns/div Vin = 5V TO OV, Vin = OV TO 5V Ta = 325C Ta-+25C MAX4429 SWITCHING SPEED (INPUT HIGH TO LOW) MAX4429 SWITCHING SPEED (INPUT LOW TO HIGH) INPUT INPUT OUTPUT OUTPUT 6CVLXW/6CPPXVIN/OCPPXVUN Vpn = 18V, CL = 2500pF, TIME = 100ns/div Vpp - 18. CL = 2500pF, TIME - 100ns/div, Vin - 5V TO OV. Vin - OV TO 5V Ta=+25C Ta= 425C FALL TIME vs. RISE TIME vs. RISE AND FALL TIMES vs. POSITIVE SUPPLY VOLTAGE POSITIVE SUPPLY VOLTAGE TEMPERATURE 70 60 TTT ] rT TT i lt | Tas 125 0 r H+ tL ro pola= 4286 Cl 2500pF = 2500pF i 0 to cL = 2500pF | 69 | Von 1V 50 | +H wp- yt. - . 40|-4 N BLOC CH Aa RISE TIME (ns) FALL TIME (ns) te AND te TIMES (ns | I 13 15 7 5 7 9 1 13 1517 60 -20 20 60 100 140 Von (V) Vop (V) TEMPERATURE { C} MA MXKIAA 3MAX4420/MAX4429/MXT429 High-Speed, 6A Single MOSFET Drivers Typical Operating Characteristics (continued) RISE AND FALL TIME vs. DELAY TIMES vs. DELAY TIMES vs. LOAD CAPACITANCE POSITIVE SUPPLY VOLTAGE TEMPERATURE = 15V . Vp - 15V \ Ta= 425C 5p Ta= 425C CLoap = 2500pF 50 2 & = = = = a az & a a Qa a N z2 < a a = 2 Zz 30 5 8 20 100 1,000 10,000 60 -40 -20 0 20 40 60 80 100 120 140 LOAD CAPACITANCE (pF) Vp (V) TEMPERATURE ( C} POSITIVE SUPPLY CURRENT vs. OUTPUT HIGH VOLTAGE vs. OUTPUT LOW VOLTAGE vs. FREQUENCY OUTPUT CURRENT OUTPUT CURRENT (SINK) Vop -0 T T I T = 2500pF . | These Vop -0.06 asd} tasC--p es foe we Von -0.12 0.48 t Vpp -0.18 0.42 ~=&| fo Vop = 18V = __ Vop-0.24 = 15V _ 236 voy aa > = = 0D 5 = o0-030 v0 45 = 030 ip -10v > ~ > Vpn -0.36 F yoq| 1 | Yoo - 15V DD Von. 18V Vop -0.42 0.18 Voo -0.48 0.12|--+ Vpp -0.54} Ta = 425C oo] eg + i Voo -0.60 0 | 100 1k 10k 100k 1M 0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 100 FREQUENCY (Hz) lout (mA} lout (mA} QUIESCENT SUPPLY CURRENT vs. QUIESCENT SUPPLY CURRENT vs. TEMPERATURE TEMPERATURE 600 Vop = 18V = Vpp = 15V = S500 Von = 10V 4 5. Von = SV 5 2 aa = = = 400 2 > > a = & & B 30 B 2 2 = = a a Oo oO g a 2 200 5 oS ao -5V =0V 100 -60 -20 20 60 joo = 140 -60 -20 20 60 100 140 TEMPERATURE ('C) TEMPERATURE ( C) 4 MAXIMHigh-Speed, 6A Single MOSFET Drivers Vpp = 18V , 4 7uF potLi3r ul 7 [ 2 | O.AyF = = O41yF wi ab psf MAAXLM 6 OUTPUT Tt Ci = 2500pF | OUTPU ({MAX4429/MXT429 +BY 2 eee INPUT ov +18V INVERTING UTPUT oy +18V --- NONINVERTING OUTPUT {MAX4420) Ov Figure 1. Switching-Time Measurement Circuit Applications Information The MAX4420/MAX4429/MXT429 have easy-to-drive in- puts. However, the input must not be allowed to stay between VjH and VIL for more than 500ns. The power supply (VDD) inputs must always be tied together, as should the outputs (OUT). Supply bypassing and grounding are extremely impor- tant, as the peak supply and output currents can be greater than 6A. Ground drops are a form of negative feedback with inverters, and therefore will degrade the delay and transition time. Ringing may also be a problem with large AV/At and/or large AC currents. Suggested bypass capacitors are a 4.7uF (low ESR) capacitor in parallel with O.1uF ceramic capacitors, mounted as close as possible to the device. Use a ground plane if possible, or separate ground returns for inputs and outputs. Ringing can be minimized with a 5Q resistor in series with the output, but this will degrade output transition time. Power Dissipation Power dissipation of the MAX4420/MAX4429/MXT 429 consists of: 1) input inverter losses 2) crowbar current through the output devices 3) output current (either capacitive or resistive). MANXIAAN The sum of these must be kept below the maximum power-dissipation limit. The DC input inverter losses are typically 454A when the input is low and 450uA when the input is high. The crowbar current through an output device making a transition is approximately 100mA for a few nanosec- onds. This is a small portion of the total supply current, except for high switching frequencies or a small load capacitance (100pF). The MAX4420/MAX4429/MXT429 power dissipation when driving a ground referenced resistive load is: P = D x RON(max) x LOAD? where D is the percentage of time the MAX4420/MAX4429/MXT429 output puils high, RON(max) is the maximum on resistance of the device with the output high, and ILOAD is the load current of the MAX4420/MAX4429/MXT429. For capacitive loads, the power dissipation is: P = CLOaD x Vpp* x FREQ where CLOAD is the capacitive load, Vpp is the MAX4420/MAX4429/MXT429 supply voltage, and FREQ is the toggle frequency. 6CV.LXW/62VOXVW/OChrXUWMAX4420/MAX4429/MXT429 High-Speed, 6A Single MOSFET Drivers _ Ordering information (continued) PART TEMP.RANGE _PIN-PACKAGE | MxT429cPA 0C to +70C 8 Plastic DIP MXT428CSA OC to +70C BsO MXT429C/D O'C to +70C Dice* MXT429EPA -40C to +85C 8 Plastic DIP MXT429ESA -40C to +85C 8S0 MXT429MJA 55Cto+125C 8CERDIP _si| * Dice are specified at TA = +25C. ** Contact factory for availability and processing to MIL-STD-883 and DESC-SMD. Chip Topography OUTPUT 0.080" (2.032 mm) 0.075" (1.905 mm) TRANSISTOR COUNT: 16; SUBSTRATE CONNECTED TO Vop Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent liconsos are implicect Maxirn reserves the right to change the circuitry and specifications without notice at any time 6 Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408} 737-7600 1992 Maxim Integrated Products Printed USA MAXIMA \s a registered trademark of Maxim Integrated Froducts