?I?9?4?3 silicon touch technology inc . 9-4f-3, prosperity rd i, science-based industrial park hsinchu, taiwan, r.o.c. tel 886-3-5727171 fax 886-3-5727390 11-MD124 version : a.008 issue date : 2004/12/20 file name : sp-11-MD124-a.008.doc total pages : 7 low-saturation, low-voltage bi-directional motor driver
c???? silicon touch technology inc. 11-MD124 sp-MD124-a.008 version a.008 - 1 - 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 z low voltage operation ( v dd min = 1.5v ) z low saturation voltage z optimal for 2 phase excitation dr ive for 2-phase stepping motors z high output sinking and driving capability z thin, highly reliable package (msop10, dfn10) pin assignment msop10 pin no. pin name description 1 o4 output sinking / driving pin. 2 vdd power supply pin. 3 gnd ground pin 4 o3 output sinking / driving pin. 5 o1 output sinking / driving pin. 6 en input pin that determines driving mode 7 gnd ground pin 8 o2 output sinking / driving pin. 9 in2 input pin that determines driving mode. 10 in1 input pin that determines driving mode. 1 o4 vdd gnd o3 o1 11-MD124 xxxxxx 2 3 5 4 10 in1 in2 o2 gnd en 9 8 6 7 1 2 3 4 10 9 8 7 o4 vdd gnd o1 o3 in1 in2 o2 en gnd 6 5 dfn10
c???? silicon touch technology inc. 11-MD124 sp-MD124-a.008 version a.008 - 2 - absolute maximum ratings ( unless otherwise noted, t a = 25 ) characteristic symbol rating unit supply voltage v dd 6.0 v input voltage v in v dd +0.4 v i odc current i odc 500 ma power dissipation p d 486 mw operating temperature range t opr -40 ~ 125 c storage temperature range t stg -65 ~ 150 c electrical characteristic (unless otherwise noted, t a = 25 & v dd = 3v ) limit characteristic sym. condition min. typ. max. unit supply voltage v dd 1.5 3 6 v supply current i dd v en, in1, in2 = 0v 0.2 0.5 a en / in1 / in2 input terminal ( t j = 25 ) input voltage ?h? v ih - 0.5*v dd - v dd +0.4 v input voltage ?l? v il - -0.4 - 0.2*v dd v input current ?h? i ih v in = v dd - - 5 a input current ?l? i il v in = 0 v - - 5 a o1 / o2 / o3 / o4 output terminal ( t j = 25 ) v out0 i out = 200 ma - 0.25 0.35 v output voltage (upper + lower) v out1 i out = 400 ma - 0.4 0.6 v truth table input pins output pins en in1 in2 o1 o2 o3 o4 notes l - - off off off off standby l l h l h l l h h l l h h h l h l h h h l l h h l 2-phase excitation
c???? silicon touch technology inc. 11-MD124 sp-MD124-a.008 version a.008 - 3 - block diagram & application circuit 2 5 8 10 4 1 7 9 control block in1 in2 gnd o4 o3 o2 o1 vdd 10 f en 6 micro- controller stepping moto r 3 gnd r1* * r1 is recommended to 1 ? ~ 2 ? . timing chart in1 in2 o2 o3 o1 o4 vdd ena stepping motor 2-phase excitation
c???? silicon touch technology inc. 11-MD124 sp-MD124-a.008 version a.008 - 4 - application notes ? the gnd pin 3 and pin 7 must bot h connect to system ground. ? to increase system stability, connecting the resistor r1 about 1 ? ~ 2 ? between system power and ic power supply vdd is recommended. typical performance curve 0.0 0.1 0.2 0.3 0.4 0.5 v sat out vs i output current i out (a) 0.1 0.2 0.3 0.4 0.5 0.6 0.7 output saturation voltage v sat (v) vdd=3v vdd=3v vdd=5v vdd=5v v in =v dd current drain i dd (ma) power supply voltage v dd (v) i dd vs v dd 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 v en =v dd
c???? silicon touch technology inc. 11-MD124 sp-MD124-a.008 version a.008 - 5 - package specifications (msop10) d e1 e b a 1 e a a 2 12 (4x) c l y dimensions in millimeter dimensions in inches symbol min nom max min nom max a 0.81 0.92 1.07 0.032 0.036 0.042 a 1 0.00 0.10 0.000 0.004 a 2 0.76 0.86 0.97 0.030 0.034 0.038 b 0.15 0.20 0.30 0.006 0.008 0.012 c 0.13 0.15 0.23 0.005 0.006 0.009 d 2.90 3.00 3.10 0.114 0.118 0.122 e 4.80 4.90 5.00 0.189 0.193 0.197 e1 2.90 3.00 3.10 0.114 0.118 0.122 e 0.50 0.0197 l 0.40 0.53 0.66 0.016 0.021 0.026 y 0.10 0.004 0 6 0 6 (dfn10)
c???? silicon touch technology inc. 11-MD124 sp-MD124-a.008 version a.008 - 6 - the products listed herein are designed for ordinary electronic a pplications, such as electrical appliances, audio-visual equi pment, communications devices and so on. hence, it is advisable that the devices s hould not be used in medical instruments, surgical implants, aerospace machiner y, nuclear power control systems, disaster/crime-prevention equipment an d the like. misusing those products may directly or indirectly en danger human life, or cause injury and property loss. silicon touch technology, inc. will not ta ke any responsibilities regarding the misusage of the products mentioned a bove. anyone who purchases any products described herein with the above-mentioned inte ntion or with such misused applications should accept full responsibility and indemn ify. silicon touch technology, inc. and its distributors and all their of ficers and employees shall de fend jointly and severally against any and all claims and litigation and a ll damages, cost and expenses associated with such intention and manipulation.
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