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| www..com 11-MD124 Version Issue Date File Name Total Pages : A.07 : 2002/9/18 : 11-MD124_A07.DOC :6 Low-saturation, Low-voltage Bi-directional Motor Driver *s|EO*so 8 2 1/4O SILICON TOUCH TECHNOLOGY INC. 8-2F, Chien-Hsin Rd., Hsin-Chu, Taiwan, R.O.C. TelG886-3-5727171 FaxG886-3-5727390 www..com AIiN/|--1/2q SILICON TOUCH TECHNOLOGY INC. 11-MD124 11-MD124 Low-saturation, Low-voltage Bi-directional Motor Driver General Specifications The device is a two-channel low-saturation bi-directional motor driver IC. The design is optimal for stepper-motor applications, such as cameras, printers, FDDs, or other portable devices. Features and Benefits l l l l l Low voltage operation ( VDD min = 1.5V ) Low saturation voltage Optimal for 2 phase excitation drive for 2-phase stepping motors High output sinking and driving capability Thin, highly reliable package (MSOP-10) Pin Assignment PIN NO. PIN NAME 1 O4 VDD GND O3 O1 EN GND O2 IN2 IN1 DESCRIPTION Output sinking / driving pin. Power supply pin. Ground pin Output sinking / driving pin. Output sinking / driving pin. Ground pin Ground pin Output sinking / driving pin. Input pin that determines driving mode. Input pin that determines driving mode. O4 VDD GND O3 O1 1 2 3 4 5 10 9 IN1 IN2 O2 GND EN 2 3 4 5 6 7 8 9 10 11 -MD124 8 7 6 11-MD124_A07 VersionGA.07 -1- www..com AIiN/|--1/2q SILICON TOUCH TECHNOLOGY INC. 11-MD124 Absolute Maximum Ratings ( Unless otherwise noted, TA= 25J Characteristic Supply Voltage Input Voltage IODC Current Power Dissipation Operating Temperature Range Storage Temperature Range Symbol VDD VIN IODC PD TOPR TSTG Rating 6.0 ) Unit V V mA mW C C VDD+0.4 500 486 -40 ~ 125 -65 ~ 150 Electrical Characteristic (Unless otherwise noted, TA= 25J Characteristic Supply Voltage Supply Current Sym. VDD IDD VEN, IN1, IN2 = 0V Condition Min. 1.5 & VDD = 3V ) Limit Typ. 3 0.2 Max. 6 0.5 V gA Unit EN / IN1 / IN2 Input Terminal ( TJ = 25J) Input Voltage "H" Input Voltage "L" Input Current "H" Input Current "L" VIH VIL IIH IIL VIN = VDD VIN = 0 V 0.5*VDD -0.4 VDD+0.4 0.2*VDD O 5 O 5 V V gA gA O1 / O2 / O3 / O4 Output Terminal ( TJ = 25J) Output Voltage (upper + lower) VOUT0 VOUT1 IOUT = 200 mA IOUT = 400 mA 0.25 0.4 0.35 0.8 V V Truth Table EN L H Input pins IN1 L L H H IN2 L H H L O1 OFF H H L L Output pins O2 O3 OFF OFF L H L L H L H H O4 OFF L H H L Notes Standby 2-phase excitation 11-MD124_A07 VersionGA.07 -2- www..com AIiN/|--1/2q SILICON TOUCH TECHNOLOGY INC. 11-MD124 Block Diagram & Application Circuit 10F VDD 2 EN O1 6 5 Stepping Motor IN1 10 8 MicroController IN2 9 Control Block 4 O2 O3 1 O4 3 GND GND 7 Timing Chart VDD ENA IN1 IN2 O1 O2 O3 O4 Stepping Motor 2-Phase Excitation 11-MD124_A07 VersionGA.07 -3- www..com AIiN/|--1/2q SILICON TOUCH TECHNOLOGY INC. 11-MD124 Application Notes The GND pin 3 and pin 7 must both connect to system ground. The power dissipated by the IC varies widely with the supply voltage, the output current, and loading. It is important to ensure the application does not exceed the allowable power dissipation of the IC package. The recommended motor driver power dissipation versus temperature is depicted as follows: Pdmax VS Ta 1000 Power Dissipation(mW) JESD51-7 900 870mW 800 700 600 JESD51-3 486mW 500 400 300 200 100 0 25 50 75 100 Ambient Temperature ( J ) 125 Typical Performance Curve VSAT IOUT VS Output Saturation VoltageSAT V (V) 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 0.1 0.2 0.3 0.4 0.5 VDD=3V VDD=3V VDD=5V VDD=5V VIN=VDD IDD V VS DD 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 VEN=VDD Current Drain(mA) I DD Output CurrentOUT I (A) 0 0.5 1 1.5 2 2.53 3.54 4.5 5 5.56 6.5 Power Supply Voltage V (V) DD 11-MD124_A07 VersionGA.07 -4- www..com AIiN/|--1/2q SILICON TOUCH TECHNOLOGY INC. 11-MD124 Package Specifications (MSOP-10) (10-pin MSOP ) E1 E C L D 12 (4X) A2 A A1 y b e Dimensions in Millimeter SYMBOL A A1 A2 b C D E E1 e L Y MIN 0.81 0.00 0.76 0.15 0.13 2.90 4.80 2.90 0.40 0 NOM 0.92 0.86 0.20 0.15 3.00 4.90 3.00 0.50 0.53 MAX 1.07 0.10 0.97 0.30 0.23 3.10 5.00 3.10 0.66 0.10 6 Dimensions in Inches MIN 0.032 0.000 0.030 0.006 0.005 0.114 0.189 0.114 0.016 0 NOM 0.036 0.034 0.008 0.006 0.118 0.193 0.118 0.0197 0.021 MAX 0.042 0.004 0.038 0.012 0.009 0.122 0.197 0.122 0.026 0.004 6 The products listed herein are designed for ordinary electronic applications, such as electrical appliances, audio-visual equipment, communications devices and so on. Hence, it is advisable that the devices should not be used in medical instruments, surgical implants, aerospace machinery, nuclear power control systems, disaster/crime-prevention equipment and the like. Misusing those products may directly or indirectly endanger human life, or cause injury and property loss. Silicon Touch Technology, Inc. will not take any responsibilities regarding the misusage of the products mentioned above. Anyone who purchases any products described herein with the above-mentioned intention or with such misused applications should accept full responsibility and indemnify. Silicon Touch Technology, Inc. and its distributors and all their officers and employees shall defend jointly and severally against any and all claims and litigation and all damages, cost and expenses associated with such intention and manipulation. 11-MD124_A07 VersionGA.07 -5- |
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