Stepper Motor Driver IC MTD Series Dual Full-bridge PWM Stepper Motor Driver MTD2003B Features ●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 ●Low thermal resistance ZIP package(ZIP27) SZIP27 ■Absolute maxmum ratings / Ta=25℃ Parameter Symbol Rating Unit Output voltage Vmm 35 V Output current IOUT 1.2 A Logic supply Vcc 0∼6 V Logic input VLOGIC 0∼Vcc V Allowable power dissipation PD 5 W Storge temperature range Tstg -40∼150 ℃ Maximum Junction temperature Tj 150 ℃ ■Pin Assignment ■Truth table Marking Area Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin 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 CR Vs B NC I1 IN 3 IN 4 Vcc Vmm B OUT 4 Rs B NC NC OUT 3 NC PG NC Out 2 Rs A OUT 1 Vmm A Vcc IN 1 IN 2 I0 Vs A Vr LG Shindengen Electric Mfg.Co.Ltd IN 1 or 4 IN 2 or 3 OUT 1 or 4 OUT 2 or 3 L L OFF OFF L H L H H L H L H H OFF OFF I0 I1 Output current ratio[%] Vref[V] (at Vr=5V) L L 100 0.50±5% H L 70 0.35±8% L H 33 0.17±10% H H 0 - W1002 Stepper Motor Driver IC MTD2003B ■Electrical Characteristics Vcc=5V , Ta=25℃ unless otherwise specified Parameter Symbol Condition MIN TYP MAX Unit V ●Output stage Upper transistor saturation voltage VCE(sat)H IC=1.0A - 1.2 1.4 Lower transistor saturation voltage VCE(sat)L IC=1.0A - 0.7 1.0 V Upper transistor leak current IrH Vmm=35V, VOUT=0V - - 10 μA Lower transistor leak current IrL VOUT=35V, VRS=0V - - 10 μA Uppre diode forward drop VFH IF=1.0A - 1.4 1.6 V Lower diode forward drop VFL IF=1.0A - 1.3 1.5 V - 50 65 mA ●Logic stage Logic supply current （2circuit ON） ICC(ON) Logic supply current （2circuit OFF） ICC(OFF) IN "H" input voltage VINH IN "L" input voltage VINL IN "H" input current IINH VIN=3.3 or 5V IN "L" input current IINL VIN=0V I0,I1 "H"input voltage VI0/I1H I0,I1 "L"input voltage VI0/I1L I0,I1 "H"input current II0/I1H VI0/I1=3.3 or 5V I0,I1 "L"input current II0/I1L Vr input current Vs input current VIN=all 0V or all 5V - 15 25 mA 2.3 - Vcc V GND - 0.6 V - - 10 μA - -3 -20 μA 2.3 - Vcc V GND - 0.6 V - - 10 μA VI0/I1=0V - -75 -100 μA Iref Vr=5V - 500 650 μA Is Vs=0V - -1 -10 μA Comparator threshhold (100%) Vs1 Vr=5V, VI0=0V, VI1=0V 0.475 0.5 0.525 V Comparator threshhold (70%) Vs2 Vr=5V, VI0=5V, VI1=0V 0.322 0.35 0.378 V Comparator threshhold (33%) Vs3 Vr=5V, VI0=0V, VI1=5V 0.153 0.17 0.187 V Chopping frequency fCHOP - 20 - kHz Blanking time tb - 1.55 - μs Vs maximum voltage Vs(max) - - 1.5 V Ct=3300pF ■Recommended operation conditions Parameter Symbol Recommendation Unit Junction temperature Tj -25∼120 ℃ Logic supply Vcc 4.75∼5.25 V Load supply Vmm 5∼31 V ■Thermal resistance Symbol Rating Unit θja 25 ℃/W Shindengen Electric Mfg.Co.Ltd W1002 Stepper Motor Driver IC MTD2003B ■Block diagram / Typical application Vcc=5V OUT2 VmmA VmmB OUT3 OUT4 IN2 I0 GATE CIRCUIT IN4 GATE CIRCUIT CPU or GATE ARRAY IN1 IN3 Vcc CPU or GATE ARRAY OUT1 Vcc Vcc I1 BLANK Q Rt R Current - Sensor + Current Sensor + R OSC S CR Ct VsA RsA PG LG Rs ●Constant chopping current level Ichop = Q S Vr − 0.015 10×Rs RsB 2-bit digital current selection Vr Vcc I0 I1 Vref VsB Rs ●Recommended component values Symbol Recommended component values Unit Rt 18 kΩ Ct 3300 pF Vr Vcc V ●ONE SHOT OFF TIME 1 f = 0.72×Ct×Rt Shindengen Electric Mfg.Co.Ltd W1002 Stepper Motor Driver IC MTD2003B ■Outline Drawing 40 ±0.3 25 ±0.2 Marking Area ±0.2 1 4 ±0.2 9±0.2 8 3.5 27 0.25±0.1 1.27 3.49 ±0.2 0.6 26X1.27=33.02 3 ±0.3 1 ±0.3 10.5 ±0.3 3.8 13 φ3.3 ±0.2 3.3 ±0.2 1 ±0.1 2.54 0.6±0.5 (Unit : mm) Shindengen Electric Mfg.Co.Ltd W1002 Stepper Motor Driver IC ! ! MTD2003B 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. However, our company takes no responsibility for any injury or damage incurred when using the IC products as described in this manual. Neither do we take any responsibility for issues arising from infringement of patent or other rights caused by using this manual. ● The provision of this manual does not guarantee the right to use any third party's patent or other rights, or grant permission to use the patent or other rights of our company. ● No part of this manual may be reproduced or copied without the specific written consent of Shindengen Electric Mfg. Co., Ltd. Shindengen Electric Mfg.Co.Ltd W1002