MTD2003S

Stepper Motor Driver IC MTD Series MTD2003S Features Dual Full-bridge PWM Stepper Motor Driver ●Dual full bridge for a bipolar stepper motor driver ●Output current 1.2A , Output voltage 35V ●Constant current control(fixed frequency PWM control) ●2-bit digital current selection ●Noise cancellation function ●Built-in flywheel and flyback diodes ●Cross conduction protection ●Shrink-ZIP package （SZIP32） SZIP32 ■Absolute maxmum ratings / Ta=25℃ Parameter Output voltage Output current Logic supply Logic input Allowable power disspation Storage tmperature range MaximumJunction temperature Symbol Vmm IOUT Vcc VLOGIC PD Tstg Tj Rating 35 1.2 0∼6 0∼Vcc 4.31 -40∼150 150 Unit V A V V W ℃ ℃ ■Pin Assignment MTD2003S 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 ■Truth table MARKING SIDE VIEW GND Vs B I1 IN4 Vmm B NC NC GND GND NC NC NC Vmm A IN1 I0 Vr IN 1 or 4 L L H H IN 2 or 3 L H L H OUT 1 or 4 OFF L H OFF OUT 2 or 3 OFF H L OFF Vref[V] (at Vr=5V) 0.50±5% 0.35±8% 0.17±10% - CR NC IN3 Vcc OUT4 Rs B OUT3 GND GND OUT2 Rs A OUT1 Vcc IN2 Vs A GND I0 L H L H I1 L L H H Output current ratio[%] 100 70 33 0 Shindengen Electric Mfg.Co.Ltd W1002 Stepper Motor Driver IC ■Electrical Characteristics Parameter ●Output stage Upper transistor saturation voltage Lower transistor saturation voltage Upper transistor leak current Lower transistor leak current Uppre diode forward drop Lower diode forward drop ●Logic stage Logic supply current （2circuit ON） Logic supply current （2circuit OFF） IN "H" input voltage IN "L" input voltage IN "H" input current IN "L" input current I0,I1 "H"input voltage I0,I1 "L"input voltage I0,I1 "H"input current I0,I1 "L"input current Vr input current Vs input current Comparator threshhold (100%) Comparator threshhold (70%) Comparator threshhold (33%) Chopping frequency Blanking time ICC(ON) ICC(OFF) VINH VINL IINH IINL VI0/I1H VI0/I1L II0/I1H II0/I1L Iref Is Vs1 Vs2 Vs3 fCHOP tb Ct=3300pF VI0/I1=3.3 or 5V VI0/I1=0V Vr=5V Vs=0V Vr=5V, VI0=0V, VI1=0V Vr=5V, VI0=5V, VI1=0V Vr=5V, VI0=0V, VI1=5V VIN=3.3 or 5V VIN=0V VIN=all 0V or all 5V 2.3 GND 2.3 GND 0.475 0.322 0.153 50 15 -3 -75 500 -1 0.5 0.35 0.17 20 1.55 65 25 Vcc 0.6 10 -20 Vcc 0.6 10 -100 650 -10 0.525 0.378 0.187 VCE(sat)H VCE(sat)L IrH IrL VFH VFL IC=1.0A IC=1.0A Vmm=35V, VOUT=0V VOUT=35V, VRS=0V IF=1.0A IF=1.0A 1.2 0.7 1.4 1.3 1.4 1.0 10 10 1.6 1.5 Symbol Condition MTD2003S Vcc=5V , Ta=25℃ unless otherwise specified MIN TYP MAX Unit V V μA μA V V mA mA V V μA μA V V μA μA μA μA V V V kHz μs ■Recommended operation conditions Parameter Junction temperature Logic supply Load supply Symbol Tj Vcc Vmm Recommendation -25∼120 4.75∼5.25 ∼31 Unit ℃ V V ■Thermal resistance Symbol θja Rating 29 Unit ℃/W Shindengen Electric Mfg.Co.Ltd W1002 Stepper Motor Driver IC ■Block diagram / Typical application MTD2003S Vcc=5V 7,25 Vcc 9 OUT1 13 8 24 19 23 OUT4 OUT2 VmmA VmmB OUT3 CPU or GATE ARRAY GATE CIRCUIT GATE CIRCUIT 6 5 26 27 Vcc IN2 I0 I1 IN3 2 Vr Vcc BLANK Q Rt 31 CR Ct VsA 3 11 RsA OSC R S 2-bit digital current selection Current - Sensor + Current Sensor + R S Q 4 I0 28 I1 LG PG 1,15,16, 17,18,32 RsB 21 30 Vref VsB Rs Rs ●Constant chopping current level Ichop = Vr − 0.015 10・Rs ●Recommended component values Symbol Recommended component values Unit Rt Ct Vr 18 3300 Vcc kΩ pF V ●ONE SHOT OFF TIME 1 f = 0.72・Ct・Rt Shindengen Electric Mfg.Co.Ltd W1002 CPU or GATE ARRAY IN1 IN4 Stepper Motor Driver IC ■Outline Drawing MTD2003S (Unit : mm) Shindengen Electric Mfg.Co.Ltd W1002 Stepper Motor Driver IC MTD2003S ! 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. Please take careful precautions against product failures or malfunctions to avoid any injuries, fire accidents or social loss by implementing safety designs such as redundancy designs, designs for fi re spread prevention, and designs for preventing malfunctions. Our semiconductor products listed in this document are not designed or manufactured to be used in devices or systems requiring extremely high levels of quality and reliability, or the failure or malfunction of which may directly threaten human lives or cause injury. In the cases where the products are to be used in devices or systems for special applications or devices or systems for specialized applications shown below, always make sure to consult us in advance. Special Applications Transportation devices (automotive, marine, etc.), communication devices for core network, traffic signal devices, fire prevention/anticrime devices, various safety devices, medical devices, etc. Specialized Applications Nuclear power control systems, aircraft and aerospace devices, submarine relay devices, and systems for preserving life, etc. Even if it is not for a special or specialized application, when IC products are to be used for devices or systems that are desired to last for a long period under continuous operation, please make sure to consult our sales representative in advance. ! ● We reserve the right to make any changes to the contents of this manual without prior notice in accordance with modifications to IC products. ● Details of specifications should be exchanged at the adoption of the IC products. ● All information included in this manual is believed to be accurate and reliable. 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