General Description The MIC4426/4427/4428 family of buffer/drivers are built using a new, highly reliable BICMOS/DMOS process. They are improved versions of the MIC426/427/428 family of buffer/ drivers (with which they are pin compatible) and are capable of giving reliable service in far more demanding electrical environments: they will not latch under any conditions within their power and voltage ratings. They are not subject to damage when up to 5V of noise spiking, of either polarity, occurs on the ground pin. They can accept. without either damage or logic upset, up to half an amp of reverse current (of either polarity) being forced back into their outputs. Asaresult, the MIC4426/27/28 series drivers are much easier to use, more flexible in operation, and much more forgiving than any other driver, CMOS or bipolar, currently available. Because they are fabricated in BICMOS/DMOS, they dissipate a minimum of power, and provide rail-to-rail voltage swings to better insure the logic state of any load they are driving. Although primarily intended for driving power MOSFETs, the 4426/4427/4428 series drivers are equally well suited to driving any other load (capacitive, resistive, or inductive} which requires a low-impedance driver capable of high peak currents and fast switching times. For example, heavily loaded clock lines, coaxial cables, or piezoelectric transducers all can be driven from the MIC 4426/27/28. The only known limitation on loading is that total power dissipated in the driver must be kept within the maximum power dissipation limits of the package. MIC4426/4427/4428 Dual 1.5A Low-Side MOSFET Driver Bipolar/CMOS/DMOS Process Features * Built using reliable, low power Bipolar/CMOS/DMOS processes * Latch-Up Protected: Withstands >500mA Reverse Current * Logic Input Will Withstand Negative Swing Up to 5V * High Peak Output Current... eee 1.54 Peak * Wide Operating Range ......... cee 4.5V to 18V * High Capacitive Load Drive Capability ....00.0.0 eee 1000pF in 25ns Short Delay Times <4Ons typ. Consistent Delay Times with Changes in Supply Voltage * Matched Rise and Fall Times Logic High Input for Any Voltage From 2.4V to Vg Logic Input Threshold Independent of Supply Voltage Low Equivalent Input Capacitance (typ) ................. 6pF Low Supply Current 4 mA with Logic 1 Inputs 400 A with Logic 0 Inputs Low Output Impedance ..0... eee eeeneeeeeereeeees 7Q Output Voltage Swing to Within 25mV of Ground or Vg Pin-Out Same as MIC426/427/428 Available in Inverting, Non-Inverting, and Differential Configurations ESD Protected MIL-STD-883 Method 5004/5005 version available As MOSFET drivers, the MIC4426/27/28 can easily switch 1000pF gate capacitances in under 30ns, and provide low enough impedances in both the ON and OFF states to assure that a MOSFETs intended state will not be affected even by large transients. Functional Diagram 0.6mA A 0.1mA 2kQ mene INVERTING NON-INVERTING Functional Diagram for One Driver (Two Drivers per PackageGround Unused Drivers) 5-50* AJB indicates units screened to MIL-STD 883, Method 5004, condition B, and burned-in for 1-week. Use SMD (Standard Military Drawing) number for ordering. MIC 4426/4427/4428 Micrel Ordering Information Part Number Temperature Range Package Configuration MiC4426CM 0C to +70C 8-Pin SOIC Dual Inverting MIC4426BM 40C to+85C MIC4426CN 0C to +70C 8-Pin Plastic DIP Dual Inverting MIC4426BN 40C to +85C MIC4426AJ 55C to +125C 8-Pin CerDIP Dual Inverting MIC4426AJB* 55C to +125C SMD#5962-8850307PX MIC4427CM OC to +70C 8-Pin SOIC Dual Non-Inverting MIC4427BM 40C to +85C MIC4427CN ac to +70C 8-Pin Plastic DIP Dual Non-Inverting MIC4427BN 40C to +85C MIC4427AJ -55C to +125C 8-Pin CerDIP Dual Non-Inverting MIC4427AJB* 55C to +125C SMD#5962-8850308PX MIC4428CM 0C to +70C 8-Pin SOIC Inverting + Non-Inverting MIC4428BM 40C to +85C MIC4428CN 0C to +70C 8-Pin Plastic DIP | Inverting + Non-Inverting MIC4428BN 40C to +85C MIC4428AJ 55C to +125C 8-Pin CerDIP inverting + Non-Inverting MIC4428AJB* -55C to +125C SMD#5962-8850309PX MIC4426CY oc to +70C Die Duat inverting MIC4427CY 0C to +70C Die Dual Non-Inverting MIC4428CY 0C to +70C Die Inverting + Non-Inverting Absolute Maximum Ratings (Notes 1 and 2) If Military/Aerospace specified devices are required, contact Micrel for availability and specifications. Supply Voltage 22V Maximum Chip Temperature 150C Storage Temperature Range -65C to 150C Lead Temperature (10 sec.) 300C Package Thermal Resistance CERDIP ReJ-a 100C/W CERDIP Roy-c 50C/AW PDIP Roy-a 130C/W PDIP Rey-c 42C/IW SOIC Ray-a 120C/W SOIC Rey-c 75CIW Operating Temperature Range C Version O to +70C B Version -40C to +85C A Version ~55C to +125C 5-51MIC4426/4427/4428 Micrel MIC4426/4427/4428 Electrical Characteristics: Specifications measured at Ta = 25C with 4.5V < Vs < 18V unless otherwise specified. Symbol Parameter Conditions Min | Typ | Max | Units INPUT VIH Logic 1 Input Voltage 2.4 1.4 Vv VIL Logic 0 Input Voltage 14 0.8 v lin Input Current O<VINS Vs -1 1 HA OUTPUT VOH High Output Voltage Vg0.025 Vv VoL Low Output Voltage 0.025 Vv Ro Output Resistance lout = 10mA, Vs = 18V 6 10 Q IpK Peak Output Current 1.5 A | Latch-Up Protection Withstand Reverse Current >500 mA SWITCHING TIME TR Rise Time Test Figure 1 18 30 ns Tr Fall Time Test Figure 1 23 30 ns To1 Delay Time Test Figure 1 17 30 ns Toe Delay Time Test Figure 1 23 50 ns POWER SUPPLY Is Power Supply Current VIN = 3.0V (Both Inputs) 1.4 45 mA Is Power Supply Current Vin = 0.0V (Both Inputs) 0.18 0.4 mA MIC4426/4427/4428 Electrical Characteristics: Specifications measured over operating temperature range with 4.5V < Vs < 18V unless otherwise specified. Symbol Parameter Conditions Min | Typ | Max | Units INPUT VIH Logic 1 Input Voltage 2.4 1.5 Vv VIL Logic 0 Input Voltage 1.0 0.8 v lin Input Current O<VIN< Vs ~1 1 LA OUTPUT VOH High Output Voltage Vs5-0.025 Vv VoL Low Output Voltage 0.025 Vv Ro Output Resistance lout = 10mA, Vs = 18V 8 12 Q 5-52MIC4426/4427/4428 Micrel MIC4426/4427/4428 Electrical Characteristics: Specifications measured over operating temperature range with 4.5 V < Vs < 18 V unless otherwise specified. Symbol Parameter Conditions | Min | Typ Max Units OUTPUT IpK Peak Output Current 1.5 A \ Latch-Up Protection Withstand Reverse Current >500 mA SWITCHING TIME TR Rise Time Test Figure 1 20 40 ns TF Fall Time Test Figure 1 29 40 ns To Delay Tlme Test Figure 1 19 40 ns Tpe2 Delay Time Test Figure 1 27 60 ns POWER SUPPLY oe Is Power Supply Current Vin = 3.0 V (Both Inputs) 1.5 mA Is Power Supply Current Vin = 0.0 V (Both Inputs) 0.19 0.6 mA Note 1: Functional operation above the absolute maximum stress ratings is not implied. static damage. Note 2: Static Sensitive device. Store only in conductive containers. Handling personnel and equipment should be grounded to prevent +5V Vg= 18V INPUT 9 O.4V 4.7 UF O.1uF er wy OUTPUT ov OUTPUT Cy = 1000pF 4 5 +5V INPUT o t- OUTPUT INPUT 3 2 INPUT 0-J INVERTING DRIVER nH i 0.4V 18V OUTPUT ov NON-INVERTING DRIVER Figure 1. Switching Time Test Circuit Ne 2fen QUTA V+ 4 b 5 OUTB INVERTING NON-INVERTING DIFFERENTIAL 5-53MIC4426/4427/4428 Typical Characteristic Curves Time (ns) Time (ns) SUPPLY CURRENT (mA) -75 -50 -25 0 25 50 75100125 150 30 20 10 Rise and Fail Time vs. Supply Voltage C, = 1000pF T, = 25C Delay Time vs. Temperature Cc V5 5 10 15 SUPPLY VOLTAGE (V) 1000pF 18V TEMPERATURE (C) 20 Supply Current vs. Frequency T q 25C 1000pF 10 FREQUENCY (kHz) 100 Vg = 18V 1000 Time (ns) IVg Your 1V) Delay Time vs. Supply Voltage C, = 1000pF T, = 25C Tog 0 5 10 15 SUPPLY VOLTAGE (V) 20 Supply Current vs. Capacitive Load 80 Ta = 25C 70 F Vg = 18V <x E 60 EL fH 50 fe 5 40 5 > 30 _ & 20 2 w 10 0 10 100 1000 CAPACITIVE LOAD (pF) 10000 High Output vs. Current 1.20 T, = 25C Ve = 5V 96 72 48 24 .00 0 10 20 30 40 50 60 70 80 90100 CURRENT SOURCED (mA) Time (ns) Time (ns) = OUTPUT VOLTAGE (V) Micrel Rise and Fall Time vs. Temperature 40 C, = 1000pF Vg = 18V 30 20 10 -75 -50 -25 0 25 50 75100125150 TEMPERATURE (C) Rise and Fall Time vs. Capacitive Load 1k Ta = 25C Vg = 18V 100 10 1 10 100 1000 10000 CAPACITIVE LOAD (pF) Low Output vs. Current 20 T, = 25C Vg = 5V 96 72 48 124 00 0 10 20 30 40 50 60 70 80 90100 CURRENT SUNK (mA) 5-54MIC 4426/4427/4428 Micrel Typical Characteristic Curves (Continued) Quiescent Power Supply Quiescent Power Supply oo 5 Current vs. Supply Voltage 400 Current vs. Supply Voltage Package Power Dissipation 1250 . . | 20 23 w 1000 Ph = = Qz2 Solc 5 & 200 2o ii 1.5 im QE 750 xc xc tt e | tL E iso) | - SY 10|-__ NoLoap | : NO LOAD 22 500 PpiP SS. 7 BOTH INPUTS LOGIC "1" 7 100] __ BOTH INPUTS LOGIC o"] 3 CERDIP a Ta = 25C Ta = 25C ou 0.5 R50 | 5 250 0 _| J 0 L 0 1 0 5 10 15 20 0 5 10 15 20 25 50 75 100 125 150 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) AMBIENT TEMPERATURE (C) Crossover Energy Loss 108 8 8 7 6 5 o 4 oO @ * 3 2 199 4 6 8 10 461206 1416 18 VsuPPLY(Y) Note: Thevalueson this graph represent the loss seen by a single transition of a single driver. For a complete cycle of a single driver multiply the stated value by 2. 5-55