orderin g numbe r : ena1773 monolithic digital ic 3-phase sensor less motor drive r LB11685VH overview the LB11685VH is a three-phase full-wave current-linear-drive motor driver ic. it adopts a sensor less control system without the use of a hall effect device. for quieter operation, the LB11685VH features a current soft switching circuit and be optimal for driving the cooling fan motors used in refrigerators, etc. functions ? three-phase full-wave linear drive (hall sensor-less method ) ? built-in three-phase output voltage control circuit ? built-in current limiter circuit ? built-in motor lock protection circuit ? motor lock protection detection output ? fg output made by back emf ? built-in thermal shut down circuit ? beat lock prevention circuit specifications maximum ratings at ta = 25 c parameter symbol conditions ratings unit maximum supply voltage v cc max 19 v input applied voltage v in max -0.3 to v cc +0.3 v maximum output current i o max *1 1.2 a allowable power dissipation pd max mounted on a board *2 1.4 w operating temperature topr -40 to 85 c storage temperature tstg -55 to 150 c junction temperature tj max 150 c *1: the i o is a peak value of motor-current. *2: specified board: 76.1mm 114.3mm 1.6mm, glass epoxy board. specifications of any and all sanyo semiconductor co.,l td. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer ' s products or equipment. to verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer ' sproductsor equipment. any and all sanyo semiconductor co.,ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, av equipment, communication device, office equipment, industrial equ ipment etc.). the products mentioned herein shall not be intended for use for any "special application" (medica l equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, t ransportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of re liability and can directly threaten human lives in case of failure or malfunction of the product or may cause har m to human bodies, nor shall they grant any guarantee thereof. if you should intend to use our products for app lications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. if there is n o consultation or inquiry before the intended use, our customer shall be solely responsible for the use. 61610 sy 20100604-s00002 no.a1773-1/7
LB11685VH no.a1773-2/7 recommended operating conditions at ta = 25 c parameter symbol conditions ratings unit recommended supply voltage v cc 12.0 v operating supply voltage v cc op 4.5 or 18.0 v electrical characteristics at ta = 25 c, v cc = 5.0v ratings parameter symbol conditions min typ max unit supply current i cc fc1 = fc2 = 0v 5 10 20 ma internal regulate voltage vreg 3.0 3.3 3.6 v output voltage (source) vosour i o = 0.8a *3 1.3 1.7 v output voltage (sink) vosink i o = 0.8a *3 0.5 1.3 v current limiter voli m 0.268 0.300 0.332 v mcom pin common-input voltage range vincom 0 v cc - 2 v mcom pin source current for hysteresis icom+ mcom = 7v 30 80 a mcom pin sink current for hysteresis icom- mcom = 7v 30 80 a mcom pin hysteresis current ratio rtcom rtcom = icom+ / icom- 0.6 1.4 vco input bias current i vco v co = 2.3v 0.2 a vco oscillation minimum frequency f vco min v co = 2.1v, cx = 0.015 f design target *2 930 hz vco oscillation maximum frequency f vco max v co = 2.7v, cx = 0.015 f design target *2 8.6 khz cx charge / discharge current i cx v co = 2.5v, cx = 1.6v 70 100 140 a cx hysteresis voltage vcx 0.35 0.55 0.75 c1 (c2) charge current ic1(2)+ v co = 2.5v, c1(2) = 1.3v 12 20 28 a c1 (c2) discharge current ic1(2)- v co = 2.5v, c1(2) = 1.3v 12 20 28 a c1 (c2) charge / discharge current ratio rtc1(2) rtc1(2) = ic1(2)+ / ic1(2)- 0.8 1.0 1.2 c1/c2 charge current ratio rtcchg rtcchg = ic1+ / ic2+ 0.8 1.0 1.2 c1/c2 discharge current ratio rtcdis rtcdis = ic1- / ic2- 0.8 1.0 1.2 c1 (c2) cramp voltage width vcw1(2) 1.0 1.3 1.6 v fg output low level voltage vfgl ifg = 3ma 0.5 v rd output low level voltage vrdl ird = 3ma 0.5 v thermal shut down operating temperature *1 ttsd junction temperature design target *2 150 180 c thermal shut down hysteresis temperature *1 ttsd junction temperature design target *2 15 c *1: the thermal shut down circuit is built-in for protection from damage of ic. but its operation is out of topr. design therma l calculation at normal operation. *2: design target value and no measurement is made. *3: the i o is a peak value of motor-current.
LB11685VH package dimensions unit : mm (typ) 3222a pd max - ta 0 1.40 2.0 -40 80 0.73 60 20 40 0 100 -20 0.5 1.0 specified circuit board : 114.3 76.1 1.6mm 3 glass epoxy board ambient temperature, ta -- c allowable power dissipation, pd max -- w 1.5 sanyo : hsop28(275mil) 1 28 14 15 0.5 2.7 15.0 7.6 0.2 0.3 2.0 0.8 (0.7) 5.6 (1.5) 1.7max 0.1 pin assignment 28 27 26 25 24 23 22 21 20 19 18 17 1 2 3 4 5 6 7 8 9 10 11 12 vco (nc) fg sgnd mcom pgnd rd uout cx c1 c2 fc2 fc1 voh reg v cc rf (nc) wout 13 14 16 15 (nc) (nc) vout (nc) (nc) (nc) (nc) (nc) (nc) no.a1773-3/7
LB11685VH block diagram output switching control start up & mask timing power on reset motor lock detector reference voltage bandgap tsd distributor pre drive + - 1 28 2 3 4 5 6 torque ripple rejection & current limit low voltage control 7 8 9 12 13 14 27 25 24 23 21 19 18 16 15 soft switching vco pll fg 11 10 17 20 26 22 no.a1773-4/7
LB11685VH pin function pin no. pin name function equivalent circuit 16 12 14 uout wout vout each output pin of three phases. 20 pgnd gnd pin in the output part. this pin is connected to gnd. the sgnd pin is also connected to gnd 9 rf pin to detect output current. by connecting a resistor between this pin and v cc , the output current is detected as a voltage. the current limiter is operated by this voltage. 21 mcom motor coil midpoint input pin. the coil voltage waveform is detected based on this voltage. 22 sgnd ground pin (except the output part) this pin is connected to gnd. the pgnd pin is also connected to gnd. 23 fg fg out made by back emf pin. it synchronizes fg out with inverted v-phase. when don?t use this function, open this pin. 25 rd motor lock protection detection output pin. output with l during rotation of motor. open during lock protection of motor (high-impedance). when don?t use this function, open this pin. 27 vco pll output pin and vco input pin. to stabilize pll output, connect a capacitor between this pin and gnd. 1 cx vco oscillation output pin. operation frequency range and minimum frequency are determined by the capacity of the capacitor connected to this pin. pin no.9 pin no.20 pin no.16,14,12 pin no.21 sgnd sgnd sgnd v cc v cc sgnd sgnd pin no.23 no.25 sgnd sgnd pin no.27 v cc sgnd sgnd vreg vreg vreg pin no.1 v cc sgnd sgnd vreg continue to the next page. no.a1773-5/7
LB11685VH continue from the former page. pin no. pin name function equivalent circuit 2 3 c1 c2 soft switching adjustment pin. the triangular wave from is form formed by connecting a capacitor with this pin. and, the switching of three-pha se output is adjusted by the slope. 4 fc2 frequency characteristic correction pin 2. to suppress the oscillation of control system closed loop of sink-side, connect a capacitor between this pin and gnd. 5 fc1 frequency characteristic correction pin 1. to suppress the oscillation of control system closed loop of source-side, connect a capacitor between this pin and gnd. 6 voh three-phase output high level output pin. to stabilize the output voltage of this pin, connect a capacitor between this pin and the v cc pin. 7 vreg dc voltage (3.3v) output pin. connect a capacitor between this pin and gnd for stabilization. 19 vcc pin to supply power-supply voltage. to curb the influence of ripple and noise. the voltage should be stabilized. pin no.2 3 v cc sgnd sgnd pin no.4 v cc sgnd sgnd vreg pin no.5 v cc sgnd sgnd pin no.6 v cc sgnd sgnd v cc pin no.7 v cc sgnd sgnd v cc no.a1773-6/7
LB11685VH application circuit example * each fixed number in the following fig, is the referential value. fan motor 14 3 2 1 13 12 11 10 9 8 4 5 v cc 6 7 15 16 17 18 19 20 21 22 23 24 25 26 27 28 v dd v dd sanyo semiconductor co.,ltd. assumes no responsib ility for equipment failures that result from using products at values that exceed, even momentarily, rate d values (such as maximum ra tings, operating condition ranges, or other parameters) listed in products specif ications of any and all sanyo semiconductor co.,ltd. products described or contained herein. sanyo semiconductor co.,ltd. strives to supply high-qual ity high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. it is possible that these probabilistic failures or malfunction could give rise to acci dents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause dam age to other property. when designing equipment, adopt safety measures so that these kinds of accidents or e vents cannot occur. such measures include but are not limited to protective circuits and error prevention c ircuits for safe design, redundant design, and structural design. upon using the technical information or products descri bed herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of sanyo semiconductor co.,ltd. or any third party. sanyo semiconductor co.,ltd. shall not be liable f or any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. information (including circuit diagr ams and circuit parameters) herein is for example only; it is not guaranteed for volume production. any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. when designing equi pment, refer to the "delivery specification" for the sanyo semiconductor co.,ltd. product that you intend to use. in the event that any or all sanyo semiconductor c o.,ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities conc erned in accordance with the above law. no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any in formation storage or retrieval system, or otherwise, without the prior written consent of sanyo semiconductor co.,ltd. this catalog provides information as of june, 2010. specifications and information herein are subject to change without notice. ps no.a1773-7/7
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