silicon touch technology inc. ?W@^?I???? 9-4f-3 prosperity road i science-based industrial park hsinchu, taiwan 300, r.o.c. tel 886-3-5645656 fax 886-3-5645626 ST1155A version : a.05 issue date : 2003/03/18 file name : ST1155A_a05.doc total pages : 7 low-saturation, low-voltage bi-directional motor driver
c???? silicon touch technology inc. ST1155A ST1155A_a05.doc version: a.05 - 1 - ST1155A 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 low voltage operation ( v dd min = v s1 min = v s2 min = 1.5v ) low saturation voltage ( upper transistor + low transistor residual voltage; 0.3v typ. at 400ma; 0.6v typ. at 750ma) parallel connection ( two-channel driver: upper transistor + low transistor residual ; 0.4v typ. at 800ma ) separate control logic power supply and motor driver power supply high output sinking and driving capability thin, highly reliable package (sop-14) pin assignment 1 2 3 4 5 6 7 14 13 12 11 10 9 8 vdd ena1 o1 vs1 o2 in1 gnd gnd ena2 o3 vs2 o4 in2 n c ST1155A
c???? silicon touch technology inc. ST1155A ST1155A_a05.doc version: a.05 - 2 - pin no. pin name description 1 vdd power supply pin for controller. 2 ena1 input pin that enabl e/disable drivers o1/o2. 3 o1 output sinking / driving pin. 4 vs1 power supply pin for output driver o1/ o2. 5 o2 output sinking / driving pin. 6 in1 input pin that determines driving mode 7 gnd ground pin 8 nc no connecting 9 in2 input pin that determines driving mode. 10 o4 output sinking / driving pin. 11 vs2 power supply pin for output driver o3/ o4. 12 o3 output sinking / driving pin. 13 ena2 input pin that enabl e/disable drivers o3/o4. 14 gnd ground pin absolute maximum ratings ( unless otherwise noted, t a = 25 ) characteristic symbol rating unit v dd 5.5 v supply voltage v s 3.5 v input voltage v in v dd +0.4 v i o peak current (in parallel connection) i opeak 3 a power dissipation p d 800 mw operating temperature range t opr -40 ~ 125 c storage temperature range t stg -65 ~ 150 c
c???? silicon touch technology inc. ST1155A ST1155A_a05.doc version: a.05 - 3 - electrical characteristic (unless otherwise noted, t a = 25 & v dd = v s = 3v ) limit characteristic sym. condition min. typ. max. unit v dd 1.5 3 5.5 v supply voltage v s 1.5 3 5.5 v i dd0 v ena1, 2 =0v, v in1,2 =0v or 3v 0.1 10 a supply current ( i dd + i s ) i dd1 v ena1, 2 =3v, v in1,2 =0v or 3v 0.05 0.5 ma ena1 / ena2 / in1 / in2 input terminal ( t j = 25 ) input voltage ?h? v ih - 0.8*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 out1 i out = 200 ma - 0.2 0.3 v v out2 i out = 400 ma - 0.3 0.6 v v out3 i out = 750 ma - 0.6 0.95 v v out4 i out = 400 ma ( parallel connection ) - 0.2 0.35 v output voltage (upper + lower) v out5 i out = 800 ma ( parallel connection ) - 0.4 0.7 v output resistance ron v dd =v s =3v, i out =400 ma - 0.75 - ? output sustaining voltage v o(sus) i out = 400 ma - - v s v
c???? silicon touch technology inc. ST1155A ST1155A_a05.doc version: a.05 - 4 - truth table in1 / in2 ena1 / ena2 o1 / o3 o2 / o4 mode l h h l forward h h l h reverse h l off off standby l l off off standby block diagram & application circuit ena1 2 1 11 4 3 5 6 8 12 10 7 14 13 9 control in1 ena2 in2 nc gnd gnd o4 o3 o2 o1 vs1 vs2 vdd 10f m1 m2 r vdd
c???? silicon touch technology inc. ST1155A ST1155A_a05.doc version: a.05 - 5 - application notes to increase system stability, it is suggestion to connect a resistor r vdd about 470 ? between battery power and driver's vdd pin as shown on application circuit. in multiple power supply application, although power supply of control logic and motor driver are separated, the voltage of vdd pin must be lager th an or equal to the voltage of vs1 and vs2 pin. 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. ST1155A ST1155A_a05.doc version: a.05 - 6 - package specifications(sop-14) dimensions in millimeter dimensions in inches symbol min nom max min nom max a1.35 1.75 0.0532 0.0688 a 1 0.10 0.25 0.0040 0.0098 a 2 b0.33 0.51 0.013 0.020 c0.19 0.25 0.0075 0.0098 d8.55 8.75 0.3367 0.3444 e3.8 4.0 0.1497 0.1574 e 1.27 0.050 h5.8 6.2 0.2264 0.2440 l0.40 1.27 0.016 0.050 y 0.10 0.004 0 8 0 8 (14-pin sop ) d eh b a 1 e a a 2 7 (4x) c l y ST1155A xxxxxx * * the package marking ?xxxxxx? is a lot number, and therefore being subject to change. 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 endanger 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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