11-MD141 version : a.002 issue date : 2002/09/18 file name : sp-md141-a.002.doc total pages : 7 low-saturation, low-voltage bi-directional motor driver ?W@^?I? 9?7?1 silicon touch technology inc . 9-7f-1, prosperity road i, science based industrial park, hsin-chu, taiwan 300, r.o.c. tel 886-3-5645656 fax 886-3-5645626
c???? silicon touch technology inc. 11-MD141 sp-md141-a.002 version a.002 - 1 - 11-MD141 low-saturation, low-voltage bi-directional motor driver general specifications the device is a four-channels low-saturation bi-directional motor driv er ic. the design is optimal for stepping-motor applications. features and benefits z low voltage operation ( v d1 min = v d2 min = 1.5v ) z low saturation voltage z optimal for 2 stepping motors z high output sinking and driving capability z thin, small, highly reliable package (ssop-16) pin assignment 1 2 3 4 5 6 7 16 15 14 13 12 11 10 gnd in2 in1 o2 o4 o6 gnd en1 en2 o1 vd1 o3 o5 vd2 8 9 gnd gnd
c???? silicon touch technology inc. 11-MD141 sp-md141-a.002 version a.002 - 2 - pin no. pin name description 1 gnd ground pin 2 in2 input pin that det ermines driving mode. 3 in1 input pin that det ermines driving mode. 4 o2 output sinking / driving pin. 5 o4 output sinking / driving pin. 6 o6 output sinking / driving pin. 7 gnd ground pin 8 gnd ground pin 9 gnd ground pin 10 vd2 power supply pin. 11 o5 output sinking / driving pin. 12 o3 output sinking / driving pin. 13 vd1 power supply pin. 14 o1 output sinking / driving pin. 15 en2 input pin that select active motor. 16 en1 input pin that select active motor. 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 400 ma power dissipation p d 600 mw operating temperature range t opr -40 ~ 125 c storage temperature range t stg -65 ~ 150 c
c???? silicon touch technology inc. 11-MD141 sp-md141-a.002 version a.002 - 3 - electrical characteristic (unless otherwise noted, t a = 25 & v d1 = v d2 = 3v ) limit characteristic sym. condition min. typ. max. unit supply voltage v d1 , v d2 1.5 3 6 v supply current ( i d1 + i d2 ) i dd0 v en1, en2, in1, in2 = 0v 0.1 0.5 a en1 / en2 / 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 ) output voltage (upper + lower) v out i out = 400 ma - 0.4 0.8 v output sustaining voltage v o(sus) i out = 400 ma - - v dd v
c???? silicon touch technology inc. 11-MD141 sp-md141-a.002 version a.002 - 4 - truth table en1 en2 in1 in2 o1 o2 o3 o4 o5 o6 notes l l - - off off off off off off h h - - off off off off off off standby l l h l h l l l l h h l l h h l h h l h l h h h h l h l l h h l l h motor 1 2-phase excitation l l h h h h l l l h l l h h l h h h l l l l h h l h h l h h l l h l motor 2 2-phase excitation block diagram & application circuit en1 16 13 15 12 5 2 control en2 in2 o4 o3 vd1 10 f micro- controller 14 4 o2 o1 stepping motor 1 9 gnd 8 gnd 3 in1 6 11 stepping motor 2 o5 o6 10 vd2 7 gnd 1 gnd
c???? silicon touch technology inc. 11-MD141 sp-md141-a.002 version a.002 - 5 - application notes ? the gnd pin 1, pin 7, pin8 and pin9 must both connect to system ground. the vd1 pin 13 and vd2 pin 10 must both connect to system power. ? in 2-stepping motors application, the driver ic drivers only one stepping-motor operating at the same time. ? the power dissipated by the ic varies widely with the supply voltage, the output current, and loading. it is important to ensure the a pplication does not exceed the allowable power dissipation of the ic package. the recomme nded motor driver power dissipation versus temperature is depicted as follows: power dissipation-temperature 0 100 200 300 400 500 600 700 800 900 0 25 50 75 100 125 ambient temperature ( ) power dissipation ( mw )
c???? silicon touch technology inc. 11-MD141 sp-md141-a.002 version a.002 - 6 - package specifications(ssop-16) 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. 1 8 16 9 0.229 0.635 0.3max 3.91 5.99 0.635 0.254 1.63 max 1.5 0.15 4.9 unit: mm
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