MTD2038G

Stepper Motor Driver IC MTD Series MTD2038G Features DMOS Microstepping PWM Motor Driver ●Dual full bridge for a bipolar stepper motor driver ●Load supply voltage 40V , Output current 1.0A ●Constant current control (Fixed frequency PWM control) ●2-bit selectable current level (Full step/Half step/Quarter step) ●Stand-by function ●Thermal shutdown with hysteresis ●Under voltage lock out function ●Surface mount package with heat sink(HSOP24) HSOP24 ■Absolute maxmum ratings / Ta=25℃ Parameter VREGOutput current Logic input Reference input Load supply Output current Power dissipation Storage temperature range Maximum Junction temperature *1 : 50.8×50.8×1mm3 Symbol IREG VLOGIC Vｒ Vmm IOUT PD *1 Tstg Tj Glass Epoxy Rating 12 0∼6 0∼7 40 1.0 2.1 -40∼150 150 Board(FR4),200mm2 Unit mA V V V A W ℃ ℃ Cupper Pattern ■Pin Assignment MTD2038G I0 A PHA A Vmm A OUT A Rs A OUT A PG (TAB) OUT B Rs B OUT B Vmm B PHA B I0 B 7 8 9 10 11 12 18 17 16 15 14 13 1 2 3 4 5 6 TOP VIEW 24 23 22 21 20 19 I1 A Vr A Vr B TEST DEC VREG PG (TAB) LG Cp C Cp B Cp A STB I1 B Shindengen Electric Mfg.Co.Ltd W1002 Stepper Motor Driver IC ■Electrical Characteristics Parameter ●Output stage Load supply current（All circuit OFF） Load supply current（All circuit ON） Load supply current（Stand-by） Upper MOSFET ON resistance Lower MOSFET ON resistance Upper MOSFET leakage current Lower MOSFET leakage current Upper MOSFET reverse voltage Lower MOSFET reverse voltage VcpA under voltage lock out threshold ●Logic stage VREGoutput voltage PHA/I0/I1/DEC "H" input voltage PHA/I0/I1/DEC "L" input voltage STB "H" input voltage STB "L" input voltage PHA/I0/I1 "H" input current PHA/I0/I1 "L" input current STB "H" input current STB "L" input current DEC "H" input current DEC "L" input current Vr "H" input current Vr "L" input current Comparator threshold voltage (100%) Comparator threshold voltage (70%) Comparator threshold voltage (40%) Oscillator frequency Comparator blanking time CpA charging time *1 Thermal shutdown temperature *2 VREG VLOGICH VLOGICL VSTBH VSTBL Imm(OFF) Imm(ON) Imm(STB) MTD2038G Vmm=24V,Ta=25℃ unless otherwise specified Symbol Condition VI0A=VI1A=VI0B=VI1B=5V VI0A=VI1A=VI0B=VI1B=0V VSTB=5V Iout=-0.8A Iout=0.8A Vmm=35V, VOUT=0V VOUT=35V, VRS=0V IF=0.8A IF=0.8A MIN Vmm+3 4.85 4.75 2.0 GND 2.3 GND 95 64 36 20 150 TYP 13 13 1.8 0.8 1.4 1.1 Vmm+4 5.00 -20 45 75 1 -1 100 70 40 30 0.65 170 MAX 22 22 200 2.0 1.0 100 100 1.6 1.3 Vmm+6 5.15 5.25 VREG 0.8 VREG 0.8 10 -50 90 -10 150 -10 10 -10 105 76 44 40 1.5 190 Unit mA mA μA Ω Ω μA μA V V V V V V V V V μA μA μA μA μA μA μA μA % % % kHz μs ms ℃ RONH RONL IrH IrL VFH VFL VcpAUVLO - IREG=500μA IREG=12mA VPHA/I0/I1=0V VSTB=5V VSTB=0V VDEC=5V VDEC=0V Vr=4V Vr=0V VI0(AorB)="L", VI1(AorB)="L" VI0(AorB)="H", VI1(AorB)="L" VI0(AorB)="L", VI1(AorB)="H" Cp1=0.22μF,Cp2=0.01μF,VSTB=5V→0V IPHA/I0/I1H VPHA/I0/I1=5V IPHA/I0/I1L ISTBH ISTBL IDECH IDECL IrefH IrefL Vs1 Vs2 Vs3 fOSC tb Tchg TTSD - *1: Charge of a charge pump takes time. Therefore, please take the time more than Tchg from aftre Vcc input or Stand-by release to even before a motor drive start. *2: TTSD is design value. ■Thermal resistance Symbol θja *3 Rating 58 Unit ℃/W *3: 50.8×50.8×1mm3 Glass Epoxy Board(FR4),200mm2 Cupper Pattern Shindengen Electric Mfg.Co.Ltd W1002 Stepper Motor Driver IC MTD2038G ■Recommended operation conditions Parameter Junction temperature Load supply Reference voltage Symbol Tj Vmm Vr Recommendation -25∼120 15∼35 0∼6 Unit ℃ V V ■Truth table I0 A(B) and I1 A(B) L L H ×：don't care I0 A(B) L H L H STB *1 L or OPEN H DEC *1 L or OPEN H I1 A(B) L L H H Current Level(％) 100 70 40 0 Mode ACTIVE Stand-By Current Decay Mode Slow Decay Mix Decay(37.5% Fast) *1 built-in pull-down resistance PHA A or B H L × OUT A or B H L OFF OUT A or B L H OFF Shindengen Electric Mfg.Co.Ltd W1002 Stepper Motor Driver IC ■Block diagram / Typical application CVREG Vmm Cvmm Cp1 Cp2 MTD2038G VREG TSD Stand-by UVLO VmmA OUTA OUTA OUTB OUTB VmmB CpA CpB CpC Charge Pump CPU or GATE ARRAY Vr Stand-by STB Decay GATE CIRCUIT CPU or GATE ARRAY Vr PHA A GATE CIRCUIT PHA B Decay VrA 1/5 Q R S 2-bit digital current selection VREG Oscillator LG PG(TAB) RsB Rs Current Sensor Current Sensor R S Q VrB 1/5 . Mix Decay% selection I0A DEC Decay 2-bit digital current selection I1A RsA Rs TEST OPEN or "H" I0B I1B CPU or GATE ARRAY CPU or GATE ARRAY ●Recommended component values Symbol Cp1 Cp2 CVREG Rs Cvmm *1 Recommended component values 0.22 0.01 0.1 0.68 47 Unit μF μF μF Ω μF *1： It recommend the electrolytic capacitor for the noise absorption connect near IC to Load supply. ●Constant chopping current level Ichop = Vr 5×Rs Ichop Output current 0A Shindengen Electric Mfg.Co.Ltd W1002 Stepper Motor Driver IC ■Outline Drawing MTD2038G (Unit : mm) Shindengen Electric Mfg.Co.Ltd W1002 Stepper Motor Driver IC MTD2038G ! Although we are constantly making every effort to improve the quality and reliability of our products, there nevertheless remains a certain probability that the semiconductor products may occasionally fail or malfunction. 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