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this is information on a product in full production. november 2016 docid029872 rev 2 1/26 STSPIN250 low voltage brush dc motor driver datasheet - production data features ? operating voltage from 1.8 to 10 v ? maximum output current 2.6 a rms with outax paralled to outbx ? r ds(on) hs + ls = 0.2 ? typ. ? current control with programmable off-time ? full protection set ? non-dissipative overcurrent protection ? short-circuit protection ? thermal shutdown ? energy saving and long battery life with standby consumption less than 80 na applications battery-powered dc motor applications such as: ? toys ? portable printers ? robotics ? point of sales (pos) devices ? portable medical equipment ? healthcare and wellness devices (shavers and toothbrushes) description the STSPIN250 is a single brush dc motor driver integrating a low r ds(on) power stage in a small vfqfpn 3 x 3 mm package. the full-bridge implements a pwm current controller with fixed off time. the device is designed to operate in battery- powered scenarios and can be forced in a zero- consumption state allowing a significant increase in battery life. the device offers a complete set of protection features including overcurrent, overtemperature and short-circuit protection. www.st.com
contents STSPIN250 2/26 docid029872 rev 2 contents 1 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.1 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.2 recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.3 thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.4 esd protections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4 pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5 typical applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 6 device description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 6.1 standby and power-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 6.2 motor driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 6.3 pwm current control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 toff adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 6.4 overcurrent and short-circuit protections . . . . . . . . . . . . . . . . . . . . . . . . . 18 6.5 thermal shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 7 graphs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 8.1 vfqfpn 3 x 3 x 1.0- 16l package information . . . . . . . . . . . . . . . . . . . . 23 9 ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 10 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
docid029872 rev 2 3/26 STSPIN250 list of tables 26 list of tables table 1. absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 table 2. recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 table 3. thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 table 4. esd protection ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 table 5. electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 table 6. pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 table 7. typical application values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 table 8. truth table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 table 9. on and slow decay states . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 table 10. recommended r rcoff and c rcoff values according to r off . . . . . . . . . . . . . . . . . . . . 17 table 11. vfqfpn 3 x 3 x 1.0 - 16l package mechanical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 table 12. device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 table 13. document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
list of figures STSPIN250 4/26 docid029872 rev 2 list of figures figure 1. block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 figure 2. pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 figure 3. typical application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 figure 4. timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 figure 5. pwm current control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 figure 6. off time regulation circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 figure 7. off time vs r off value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 figure 8. overcurrent and short-circuit protections management . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 figure 9. disable time versus r en and c en values (v dd = 3.3 v) . . . . . . . . . . . . . . . . . . . . . . . . . . 19 figure 10. disable time versus r en and c en values (v dd = 1.8 v) . . . . . . . . . . . . . . . . . . . . . . . . . . 19 figure 11. thermal shutdown management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 0 figure 12. power stage resistance versus supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 figure 13. power stage resistance versus temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 figure 14. overcurrent threshold versus supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 figure 15. vfqfpn 3 x 3 x 1.0 - 16l package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 figure 16. vfqfpn 3 x 3 x 1.0 - 16l recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
docid029872 rev 2 5/26 STSPIN250 block diagram 26 1 block diagram figure 1. block diagram %"& $#'%$""$! &!""'$%
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electrical data STSPIN250 6/26 docid029872 rev 2 2 electrical data 2.1 absolute maximum ratings 2.2 recommended operating conditions table 1. absolute maximum ratings symbol parameter test condition value unit v s supply voltage - -0.3 to 11 v v in logic input voltage - -0.3 to 5.5 v v out - v sense output to sense voltage drop - up to 12 v v s - v out supply to output voltage drop - up to 12 v v sense sense pins voltage - -1 to 1 v v ref reference voltage input - -0.3 to 1 v i out,rms continuous power st age output current (outax // outbx) - 2.6 arms t j,op operative junction tem perature - -40 to 150 c t j,stg storage junction temperature - -55 to 150 c table 2. recommended operating conditions symbol parameter test condition min. typ. max. unit v s supply voltage - 1.8 - 10 v v in logic input voltage - 0 - 5 v v ref reference voltage input - 0.1 - 0.5 v t inw logic input positive/negative pulse width - 300 - - ns
docid029872 rev 2 7/26 STSPIN250 electrical data 26 2.3 thermal data 2.4 esd protections table 3. thermal data symbol parameter conditions value unit r thja junction to ambient thermal resistance natural convection, according to jesd51-2a (1) 57.1 c/w r thjctop junction to case thermal resistance (top side) simulation with cold plate on package top 67.3 c/w r thjcbot junction to case thermal resistance (bottom side) simulation with cold plate on exposed pad 9.1 c/w r thjb junction to board thermal resistance according to jesd51-8 (1) 23.3 c/w jt junction to top characterization according to jesd51-2a (1) 3.3 c/w jb junction to board characterization according to jesd51-2a (1) 22.6 c/w 1. simulated on a 21.2 x 21.2 mm board, 2s2p 1 oz copper and four 300 ? m via below exposed pad. table 4. esd protection ratings symbol parameter test condition class value unit hbm human body model conforming to ansi/esda/jedec js-001-2014 h2 2 kv cdm charge device model conforming to ansi/esda/jedec js-001-2014 c2a 500 v
electrical characteristics STSPIN250 8/26 docid029872 rev 2 3 electrical characteristics testing conditions: v s = 5 v, t j = 25 c, unless otherwise specified. table 5. electrical characteristics symbol parameter test condition min. typ. max. unit supply v sth(on) v s turn-on voltage v s rising from 0 v 1.45 1.65 1.79 v v sth(off) v s turn-off voltage v s falling from 5 v 1.3 1.45 1.65 v v sth(hys) v s hysteresis voltage - - 180 mv i s v s supply current no commutations en = 0 r off = 160 k ? - 960 1300 ? a no commutations en = 1 r off = 160 k ? -15001950 ? a i s,stby v s standby current stby = 0 v - 10 80 na v stbyl standby low logic level input voltage - - - 0.9 v v stbyh standby logic level input voltage - 1.48 - - v power stage r ds(on)hs+ls total on resistance hs + ls (1) (outax // outbx) v s = 10 v i out = 1.3 a - 0.2 0.33 ? v s = 10 v i out = 1.3 a tj = 125 c (2) - 0.27 0.44 v s = 3 v, i out = 0.4 a - 0.27 0.4 i dss leakage current outx = v s --1 a outx = gnd - 1 - - v df freewheeling diode forward voltage i d = 1.3 a - 0.9 - v t rise rise time v s = 10 v; unloaded outputs - 10 - ns t fall fall time v s = 10 v; unloaded outputs - 10 - ns t dt dead time - - 50 - ns pwm current controller v sns,offset sensing offset v ref = 0.5 v internal reference 20% v ref -15 - +15 mv t off total off time r off = 10 k ? -9-s r off = 160 k ? - 125 - s
docid029872 rev 2 9/26 STSPIN250 electrical characteristics 26 ? f osc oscillator precision f osc /f osc,id -20% - +20% - t off,jitter total off time jittering r off = 10 k ? --2% - logic ios v ih high logic level input voltage - 1.6 - - v v il low logic level input voltage - - - 0.6 v v release fault open drain release voltage - - - 0.4 v v ol low logic level output voltage i ol = 4 ma - - 0.4 v r stby stby pull-down resistance - - 36 - k ? i pden en pull-down current - - 10.5 - a t end en input propagation delay from en falling edge to out high impedance -55-ns t pwm,d(on) pwm turn-on propagation delay see figure 4 on page 14 - 125 - ns t pwm,d(off) pwm turn-off propagation delay see figure 4 - 140 - ns t ph,d ph propagation delay see figure 4 - 125 - ns protections t jsd thermal shutdown threshold - - 160 - c t jsd,hyst thermal shutdown hysteresis - - 40 - c i oc overcurrent threshold single out - 2 - a outax // outbx - 4 - 1. production test made on single outputs. 2. based on characterization data on a limited number of samples, not tested during production. table 5. electrical ch aracteristics (continued) symbol parameter test condition min. typ. max. unit
pin description STSPIN250 10/26 docid029872 rev 2 4 pin description figure 2. pin connection (top view) note: the exposed pad, test0 and test1 pins must be connected to ground. outa1 and outb1 must be connected together. outa2 and outb2 must be connected together. sensea and senseb must be connected together.

table 6. pin description no. name type function 1 ph logic input phase input 2 pwm logic input pwm input 3 outa1 power output power bridge output side a1, must be connected to outb1. 4 sensea power output sense output a, must be connected to senseb. 5 outa2 power output power bridge output side a2, must be connected to outb2. 6 vs supply device supply voltage. 7, epad gnd ground device ground. 8 outb2 power output power bridge output side b2, must be connected to outa2. 9 senseb power output sense output b, must be connected to sensea.
docid029872 rev 2 11/26 STSPIN250 pin description 26 10 outb1 power output power bridge output side b1, must be connected to outa1. 11 ref analog input reference voltage for the current limiter circuitry. 12 toff analog input internal oscillator frequency adjustment. 13 en\fault logic input\ open drain output logic input 5 v compliant wh it and open drain output. this is the power stage enable (when low the power stage is turned off) and it is forced low through the integrated open-drain mosfet when a failure occurs. 14 stby\reset logic input logic input 5 v compliant. when forced low the device is forced into the low consumption mode. 15 test0 - reserved pin. this pin must be connected to ground. 16 test1 - reserved pin. this pin must be connected to ground. table 6. pin description (continued) no. name type function
typical applications STSPIN250 12/26 docid029872 rev 2 5 typical applications figure 3. typical application schematic table 7. typical application values name value c s 2.2 f / 16 v c spol 22 f / 16 v r sns 330 m ? / 1 w c en 10 nf / 6.3 v r en 18 k ? c stby 1 nf / 6.3 v r stby 18 k ? c rcoff 22 nf r rcoff 1 k ? r off 47 k ? (t off ?? 37 s) !

docid029872 rev 2 13/26 STSPIN250 device description 26 6 device description the STSPIN250 is a single brush dc motor driv er integrating a pwm current controller and a power stage composed by a fully-protected full-bridge. 6.1 standby and power-up the device provides a low settable cons umption mode forcing the stby\reset input below the v stbyl threshold. when the device is in the standby status, the power stage is disabled (outputs are in high impedance) and the supply to the inte grated control circuitry is cut-off. 6.2 motor driving the outputs of the full-bridge are controlled by the pwm and ph inputs as listed in table 8 . table 8. truth table en\fault ph pwm outx1 outx2 full-bridge condition 0 x x hiz hiz disabled 1 0 0 gnd gnd both ls on 1 0 1 gnd vs hsx2 and lsx1 on (current x1 ? x2) 1 1 0 gnd gnd both ls on 1 1 1 vs gnd hsx1 and lsx2 on (current x1 ? x2)
device description STSPIN250 14/26 docid029872 rev 2 figure 4. timing diagram

docid029872 rev 2 15/26 STSPIN250 device description 26 6.3 pwm current control the device implements a current controller. the voltage on the sense pins (v sense ) is compared to the reference voltage applied on the ref pin (v ref ). when v sense > v ref , the current limiter is triggered, the off time counter is started, and the decay sequence is performed. the decay sequence starts turning on all the low sides of the full-bridge. after the programmed off time the system returns to the on state. the reference voltage value, v ref , has to be selected according to the load current target value (peak value) and sense resistors value. equation 1 v ref = r snsx ? i load,peak in choosing the sense resistors value, two main issues must be taken into account: ? the sensing resistor dissipates energy and provides dangerous negative voltages on the sense pins during the current recirculatio n. for this reason the resistance of this component should be kept low (using multip le resistors in para llel will help obtaining the required power rating with standard resistors). ? the lower is the r snsx value, the higher is the peak current error due to noise on the v ref pin and to the input offset of the curr ent sense comparator: too low values of r snsx must be avoided. table 9. on and slow decay states ph pwm on decay 00 hsx1 = off lsx1 = on hsx2 = off lsx2 = on n.a. (1) 1. during decays the input values are ignored until the sy stem returns to on condition (decay time expired). 01 hsx1 = off lsx1 = on hsx2 = on lsx2 = off hsx1 = off lsx1 = on hsx2 = off lsx2 = on 10 hsx1 = off lsx1 = on hsx2 = off lsx2 = on n.a. (1) 11 hsx1 = on lsx1 = off hsx2 = off lsx2 = on hsx1 = off lsx1 = on hsx2 = off lsx2 = on
device description STSPIN250 16/26 docid029872 rev 2 figure 5. pwm current control

docid029872 rev 2 17/26 STSPIN250 device description 26 toff adjustment the decay time is adjusted through an exter nal resistor connected between the toff pin and ground as shown in figure 6 . a small rc series must be in serted in parallel with the regulator resistor in order to increase the stability of th e regulation circuit according indications listed in table 10 . figure 6. off time regulation circuit the relation between the off time and the exter nal resistor value is shown in the graph of figure 7 . the value typically ranges from 10 s to 150 s. figure 7. off time vs r off value table 10. recommended r rcoff and c rcoff values according to r off roff rrcoff crcoff 10 k ? ? r off < 82 k ? 1 k ? 22 nf 82 k ? ? r off ? 160 k ? 2.2 k ? 22 nf

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device description STSPIN250 18/26 docid029872 rev 2 6.4 overcurrent and shor t-circuit protections the device embeds circuitry protecting each power output against the overload and short- circuit conditions (sho rt-circuit to ground, short-circui t to vs and short-circuit between outputs). when the overcurrent or the short-circuit protection is triggered, the power stage is disabled and the en\fault input is forced low through the integrated open-drain mosfet discharging the external c en capacitor. the power stage is kept disabled and the o pen-drain mosfet is kept on until the en\fault input falls below the v release threshold, then the c en capacitor is charged through the r en resistor. figure 8. overcurrent and short-circuit protections management the total disable time after an overcurrent event can be set by properly sizing the external network connected to the en\fault pin (refer to figure 9 and figure 10 ): equation 2 t dis = t discharge + t charge but t charge is normally very higher than t discharge we can consider only the second one contribution: where v dd is the pull-up voltage of the r en resistor. '" #$
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docid029872 rev 2 19/26 STSPIN250 device description 26 figure 9. disable time versus r en and c en values (v dd = 3.3 v) figure 10. disable time versus r en and c en values (v dd = 1.8 v) 'lvdeoh wlph >?v@ & (1 >q)@ 5 (1 n : 5 (1 n : 5 (1 n : 5 (1 n : 5 (1 n : 5 (1 n : $0 'lvdeoh wlph >?v@ & (1 >q)@ 5 (1 n : 5 (1 n : 5 (1 n : 5 (1 n : 5 (1 n : 5 (1 n : $0
device description STSPIN250 20/26 docid029872 rev 2 6.5 thermal shutdown the device embeds circuitry protecting it from the overtemperature condition. when the thermal shutdown temperature is re ached the power stage is disabled and the en\fault input is forced low through the integrated open-drain mosfet. the protection and the en\fault output are released when the ic temperature returns below a safe operating value (t jsd - t jsd,hyst ). figure 11. thermal shutdown management

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docid029872 rev 2 21/26 STSPIN250 graphs 26 7 graphs figure 12. power stage resistance versus supply voltage figure 13. power stage resistance versus temperature
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graphs STSPIN250 22/26 docid029872 rev 2 figure 14. overcurrent threshold versus supply voltage

docid029872 rev 2 23/26 STSPIN250 package information 26 8 package information in order to meet environmental requirements, st offers these devices in different grades of ecopack ? packages, depending on their level of environmental compliance. ecopack ? specifications, grade definitions a nd product status are available at: www.st.com . ecopack ? is an st trademark. 8.1 vfqfpn 3 x 3 x 1.0- 16l package information figure 15. vfqfpn 3 x 3 x 1.0 - 16l package outline
package information STSPIN250 24/26 docid029872 rev 2 figure 16. vfqfpn 3 x 3 x 1.0 - 16l recommended footprint table 11. vfqfpn 3 x 3 x 1.0 - 16l package mechanical data (1) 1. vfqfpn stands for ?thermally enhanced ve ry thin fine pitch qu ad packages no lead?. very thin: 0.80 < a ? 1.00 mm / fine pitch: e < 1.00 mm. the pin #1 identifier must exist on the top surfac e of the package by using indentation mark or other feature of the package body. symbol dimensions (mm) min. typ. max. a 0.80 0.90 1.00 a1 - 0.02 - a3 - 0.20 - b 0.18 0.25 0.30 d 2.85 3.00 3.15 d2 1.70 1.80 1.90 e 2.85 3.00 3.15 e2 1.70 1.80 1.90 e - 0.50 - l 0.45 0.50 0.55
docid029872 rev 2 25/26 STSPIN250 ordering information 26 9 ordering information 10 revision history table 12. device summary order code package packaging STSPIN250 vfqfpn 3 x 3 x1.0 - 16l tape and reel table 13. document revision history date revision changes 17-oct-2016 1 initial release. 04-nov-2016 2 updated document status to : datasheet - production data on page 1. updated figure 1 on page 5 and figure 12 on page 21 (replaced by new figures). updated table 2 on page 6 (added new parameter t inw ). minor modifications throughout document.
STSPIN250 26/26 docid029872 rev 2 important notice ? please read carefully stmicroelectronics nv and its subsidiaries (?st?) reserve the right to make changes, corrections, enhancements, modifications, and improvements to st products and/or to this document at any time without notice. purchasers should obtain the latest relevant in formation on st products before placing orders. st products are sold pursuant to st?s terms and conditions of sale in place at the time of o rder acknowledgement. purchasers are solely responsible for the choice, selection, and use of st products and st assumes no liability for application assistance or the design of purchasers? products. no license, express or implied, to any intellectual property right is granted by st herein. resale of st products with provisions different from the information set forth herein shall void any warranty granted by st for such product. st and the st logo are trademarks of st. all other product or service names are the property of their respective owners. information in this document supersedes and replaces information previously supplied in any prior versions of this document. ? 2016 stmicroelectronics ? all rights reserved

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