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1 publication order number : lb11867fv/d www.onsemi.com ? semiconductor component s industries, llc, 2015 june 2015 - rev. 1 ordering information see detailed ordering and shipping inform ation on page 11 of this data sheet. lb11867fv overview lb11867fv is a single-phase bipolar driving motor pre-driver with the variable speed function compatible with external pwm signal. with a few external parts, a highly-efficient and highly-silent variable drive fan motor with low power consumption can be achieved. this product is best suited for driving of the server requiring la rge air flow and large current and the fan motor of consumer appliances. feature ? single-phase full-wave driving pre-driver ? low-saturation drive using external pmos-nmos enables high-efficiency low power-consumption drive. ? variable speed control possible with external pwm input ? separately-excited upper direct pwm (f =30khz) control method ensures highly silent speed control. ? current limiting circuit incorporated ? chopper type current limiting made at startup and during lock. ? reactive current cut circuit incorporated ? reactive current before phase change over is cut, ensuring highly silent and low power-consumption drive. ? minimum speed setting pin ? minimum speed can be set by setting the resistance. ? soft start setting pin ? lock protection and automatic reset circuits incorporated ? fg (rotation speed detection) output ? thermal shutdown circuit incorporated typical applications ? computing & peripherals ? industrial ? server ? vending machine ssop16 (225mil) monolithic digital ic for fan motor variable speed single-phase full-wave pre-drive r
lb11867fv www.onsemi.com 2 specifications absolute maximum ratings at ta = 25 ? c parameter symbol conditions ratings unit v cc pin maximum supply voltage v cc max 18 v outn pin maximum output current ioutn max 20 ma outp pin maximum sink current ioutp max 20 ma out pin output withstand voltage vout max 18 v vth, rmi pins withstand voltage vvth, vrmi max 7v s-s pin withstand voltage v s-s max 7v fg output pin withstand voltage v fg max 19 v fg pin maximum output current i fg max 10 ma 5vreg pin maximum output current i5vreg max 20 ma allowable power dissipation pd max with specified substrate *1 800 mw operating temperature topr *2 -30 to 95 ? c storage temperature tstg -55 to 150 ? c *1 specified substrate: 114.3mm ? 76.1mm ? 1.6mm, glass epoxy board. *2 tj max=150c must not be exceeded. recommended operating conditions at ta = 25 ? c parameter symbol conditions ratings unit v cc supply voltage v cc 5.5 to 16 v vth, rmi input voltage range vth, rmi 0 to 5 v hall input common-phase input voltage range vicm 0.2 to 3 v functional operation above the stresses listed in the recommended operating ranges is not implied. extended exposure to stresses beyond the recomme nded operating ranges limits may affect device r eliab ility. stresses exceeding maximum ratings may damage the device. maximum ratings are stress ratings only. functional operation above the recommended oper ating conditions is not implied. extended exposure to stresses above the recommended operating conditions may affect device reliabili ty.
lb11867fv www.onsemi.com 3 electrical characteristics at ta ? 25 ? c, v cc = 12v parameter symbol conditions ratings unit min typ max circuit current i cc 1 during drive 5.5 7.5 9.5 ma i cc 2 during lock protection 5.5 7.5 9.5 ma 5vreg voltage 5vreg i5vreg = 5ma 4.80 4.95 5.10 v current limiting voltage vlim 185 200 215 mv cpwm pin ?h? level voltage v cpwm h 2.8 3.0 3.2 v cpwm pin ?l? level voltage v cpwm l 0.9 1.1 1.3 v cpwm pin charge current i cpwm 1 v cpwm = 0.5v 24 30 36 ? a cpwm pin discharge current i cpwm 2 v cpwm = 3.5v 21 27 33 ? a cpwm oscillation frequency fpwm c = 220pf 30 khz ct pin ?h? level voltage v ct h 2.8 3.0 3.2 v ct pin ?l? level voltage v ct l 0.9 1.1 1.3 v ct pin charge current i ct 1 v ct = 0.5v 1.6 2.0 2.5 a ct pin discharge current i ct 2 v ct = 3.5v 0.16 0.20 0.25 a ct pin charge/discharge ratio r ct i ct 1/i ct 2 8 10 12 times s-s pin discharge current i s-s v s-s = 1v 0.4 0.5 0.6 ? a outn output h-level voltage v o nh i o = 10ma v cc -0.85 v cc -1.00 v outn output l-level voltage v o nl i o = 10ma 0.9 1.00 v outp output l-level voltage v o pl i o = 10ma 0.5 0.65 v hall input sensitivity vhn in + , in - differential voltage (including offset and hysteresis) ? 10 ? 20 mv fg output l-level voltage v fg l i fg = 5ma 0.15 0.30 v fg pin leakage current i fg l v fg = 19v 20 ? a vth/rmi pin bias current ivth/ir mi cpwm = vth/rmi = 2v 0.1 ? a product parametric performance is indicated in the electrical characteristics for the listed test conditions, unless otherwise noted. product per formance may not be indicated by the electrical characteristics if operated under different conditions.
lb11867fv www.onsemi.com 4 package dimensions unit : mm ssop16 (225mil) case 565am issue a xxxxxxxxxx ymddd xxxxx = specific device code y = year m = month ddd = additional traceability data generic marking diagram* soldering footprint* note: the measurements are not to guarantee but for reference only. (unit: mm) *for additional information on our pb ? free strategy and soldering details, please download the on semiconductor soldering and mounting techniques reference manual, solderrm/d. 1.0 5.80 0.32 0.65
lb11867fv www.onsemi.com 5 pin assignment -30 0 30 60 9095 120 352 0 200 400 600 800 1000 pd max -- ta mounted on a specified board: 114.3 76.1 1.6mm 3 , glass epoxy ambient temperature, ta -- c allowable power dissipation, pd max -- mw 1 2 3 4 5 6 7 16 15 14 13 12 11 10 out2p out2n v cc sense rm vth cpwm in + ct s-s 5vreg sgnd out1n out1p top view 8 fg 9 in -
lb11867fv www.onsemi.com 6 block diagram truth table (1) drive lock cpwm=h vth, rmi, s-s=l in - in + ct out1p out1n out2p out2n fg mode h l l l l off h l out1 ? 2 drive l h off h l l off out2 ? 1 drive h l h off l off h l lock protection l h off h off l off (2) speed control ct, s-s=l vth, rmi cpwm in - in + out1p out1n out2p out2n mode l h h l l l off h out1 ? 2 drive l h off h l l out2 ? 1 drive h l h l off l off h regeneration mode l h off h off l for vth, rmi, and s-s pins, refer to the timing chart. osillaton s-s rmi vth out1n out1p out2n out2p fg 5vreg cpwm sense controller hall in - in + discharge pulse discharge circuit thermal shat down 5vreg v cc ct 0.47 to 1 f sgnd
lb11867fv www.onsemi.com 7 application circuit example (12v) *1. power ? gnd wiring sgnd is connected to the contro l circuit power supply system. *2. power stabilization capacitor for the power stabilization ca pacitor on the signal side, use the capacitance of 1 f or more. connect v cc and gnd with a thick and shortest pattern. *3. power stabilization capaci tor on the power side for the power stabilization ca pacitor on the power side, use the capacitance of 1 f or more. connect the power supply on the power side and gnd with a thick and shortest pattern. *4. in + , in - pins hall signal input pin. wiring should be short to prevent carrying of noise. if noise is carried, insert the capacitor between in + and in - pins. the hall input circuit functions as a comparator with hysteresis (15mv). this also has a soft switch section with ? 30mv (input signal differential voltage). it is also recommended that the hall input level is minimum 100mv(p-p). *5. cpwm pin pin to connect the capacitor for generation of the pwm basic frequency the use of cp = 220pf causes oscillation at f = 30khz, which is the basic frequency of pwm. as this is used also for the current limiting canceling sign al, be sure to connect the ca pacitor even when the speed control is not made. rf rp=1k 4 3 2 1 *3 *2 v cc 5vreg fg in - in + h s-s rmi *4 *11 *6 vth pwm-in cpwm ct cp=220pf 30khz *7 *5 *10 ct=0.47 f sgnd *9 sense *8 2 1 4 3 *1 1 f to /25v 1 f to /25v rfg=10k to 100k 100
lb11867fv www.onsemi.com 8 *6. rmi pin minimum speed setting pin. perform pull-up with 5vreg when this pin is not to be used. if the ic power supply is likely to be turned off first when the pin is used with external power supply, be sure to insert the current limiting resistor to prevent inflow of large current. (the same applies to the vth pin.) *7. vth pin speed control pin. connect this pin to gnd when it is not used (at full speed). for the control method, refer to the timing chart. for control with pulse input, insert the current limiting resistor and use the pin with the frequency of 20k to 100khz (20khz to 50khz recommended). *8. sense pin current limiting detection pin. when the pin voltage exceeds 0.2v, the current is limited and the operation enters the lower regeneration mode. connect this pin to gnd when it is not to be used. *9. fg pin rotation speed detection pin. this is an open collector output, which can detect th e rotation speed from the fg output according to the phase changeover. keep this pin open when it is not to be used. *10. ct pin pin to connect the lock detection capacitor. the constant-current charge and discharge circuits incorporated cause locking when the pin voltage becomes 3.0v and unlocking when it is 1.1v. connect the pin to gnd when it is not to be used (locking not necessary). *11. s-s pin pin to connect the soft-start setting capacitor. connect the capacitor between 5vreg and s-s pin. this pin enables setting of the soft start tim e according to the capac ity of the capacitor. see the timing char. connect the pin to gnd when it is not to be used.
lb11867fv www.onsemi.com 9 control timing chart (speed control) (1) minimum speed setting (stop) mode the low-speed fan rotation occurs at th e minimum speed set with the rmi pin. when the minimum speed is not set (rmi pin pulled up to 5vreg), the motor stops. (2) low speed ? high speed pmw control is made by comparing the cpwm oscillation voltage (1.1v ? 3.0v) and vth voltage. both upper and lower output trs are turned on when the vth voltage is low. the upper output tr is turned off when the vth voltage is high, regenerating the coil current in the lower tr. therefore, as the vth voltage decreases, the output on-duty increases, causing increase in th e coil current, raising the motor rotation speed. the rotation speed can be monitored with the fg output. (3) full speed mode the full speed mode becomes effective when the vth voltage is 1.1v or less. (set vth = gnd when the speed control is not to be made.) 0v 3.0v 1.1v cpwm f=30khz (cp=220pf) 0% 100% fg onduty vth voltage rmi voltage minimum speed setting rotation (stop mode) low speed high speed pwm control speed variable full speed
lb11867fv www.onsemi.com 10 control timing chart (soft start) (1)at vth < rmi voltage (2) at vth > rmi voltage adjust the s-s pin voltage gradient by means of the capacitance of the capacitor between the s-s pin and 5vreg.. recommended capacitor: 0.1 ? to 1 ? f 0v 3.0v 1.1v cpwm 0% 100% onduty t rmi voltage vth voltage s-s voltage lock protection soft start section vth set speed 0v 3.0v 1.1v cpwm 0% 100% onduty t vth voltage rmi voltage s-s voltage lock protection soft start section rmi set speed
lb11867fv www.onsemi.com 11 on semiconductor and the on logo are registered trademarks of semiconductor components industries, llc (scillc) or its subsidiaries in the united st ates and/or other countries. scillc owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. a lis ting of scillc?s product/patent coverage may be accessed at www.onsemi.com/site/pdf/patent-marking.pdf . scillc reserves the right to make changes with out further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for any parti cular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. ?typical? parameters which may be provided in scillc data sheets and/or specific ations can and do vary in different applications and actual performance may vary over time. all operating parameters, including ?typicals? must be validated fo r each customer application by customer?s technical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc pro ducts are not designed, intended, or authorized for use as com ponents in systems int ended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the scillc product could create a situation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indemnify and hold scillc and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees ar ising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that sci llc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employer. this literature is subject t oall applicable copyright laws and is not for resale in any manner. ordering information device package shipping (qty / packing) lb11867fv-mpb-e ssop16 (225mil) (pb-free) 90 / fan-fold lb11867fv-mpb-h ssop16 (225mil) (pb-free / halogen free) 90 / fan-fold LB11867FV-TLM-E ssop16 (225mil) (pb-free) 2000 / tape & reel lb11867fv-tlm-h ssop16 (225mil) (pb-free / halogen free) 2000 / tape & reel ? for information on tape and reel specifications, including part orientation and tape sizes, please refer to our tape and reel packaging specifications brochure, brd8011/d. http://www .onsemi.com/pub_link/co llateral/brd8011-d.pdf

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