specifications of any and all sanyo semiconductor co.,ltd. 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 ' s products or 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. the products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. if you should intend to use our products for new introduction or other application different from current conditions on the usage of automotive device, communication device, office equipment, industrial equipment etc. , please consult with us about usage conditi on (temperature, operation time etc.) prior to the intended use. if there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. 83111 sy 20110720-s00006 no.a1974-1/6 LV8806GQ overview LV8806GQ is a 3-phase sensor-less motor driver ic. 3-phase driver allows low power consumption and low vibra tion. and hall sensor-less drive allows reduction of the size of a motor system. this ic is suitable for use in products which require high reliability and long life such as note pc fan. functions ? built-in current limit circuit (operates when rf resistance is 0.5 ? and io=0.53a) ? 3-phase full-wave sensor-less driver ? ? fg (rotation count) output signal pin ? ? built-in lock protection and auto-recovery circuit ? specifications absolute maximum ratings at ta = 25 c parameter symbol conditions ratings unit v cc maximum supply voltage v cc max 7 v out pin maximum output current i out max 0.7 a out(vo, vo, wo) pin withstand voltage v ou t max 7 v fg output pin maximum sink current i fg max 5 ma fg output pin withstand voltage v fg max 7 v rd output pin maximum sink current i rd max 5 ma rd output pin withstand voltage v rd max 7 v allowable power dissipation pd max1 ic only 150 mw pd max2 with specified board *1 700 mw operating temperature topr *2 -40 to 95 c storage temperature tstg -55 to 150 c *1: with specified board: 50mm50mm1.6m m, grass epoxy board / single layer. *2: tjmax must not exceed 150 c caution 1) absolute maximum ratings represent the va lue which cannot be exceeded for any length of time. caution 2) even when the device is used within the range of abso lute maximum ratings, as a result of continuous usage under hig h temperature, high current, high voltage, or drastic temperature change, the reliability of th e ic may be degraded. please contact us for the further detai ls. bi-cmos integrated circuit ic 3-phase sensor-less motor driver ic orderin g numbe r : ena1974
LV8806GQ no.a1974-2/6 recommended operating conditions at ta = 25 c parameter symbol conditions ratings unit v cc supply voltage v cc 5.0 v operating v cc supply voltage range v cc op 2.0 to 6.0 v pwm input frequency range f pwm 20 to 50 khz electrical characteristics at ta = 25 c, v cc = 5.0v parameter symbol conditions ratings unit min typ max circuit current i cc 1 pwm=5v 1.5 2.5 ma i cc 2 pwm=0v 10 50 a output circuit on-resistance of high-side output transistor r on (h) i o =500ma 0.5 0.9 ? on-resistance of low-si de output transistor r on (l) i o =500ma 0.5 0.9 ? sum of the on-resistance of high/low-side output transistor r on (h+l) i o =500ma 1.0 1.8 ? startup oscillation (osc) pin osc pin charge current i osc c osc=0v -3.25 -2.50 -1.75 a osc pin discharge current i osc d osc=1.2v 1.75 2.50 3.25 a osc pin high level threshold voltage v osc thh 1.0 1.1 1.2 v osc pin low level threshold voltage v osc thl 0.5 0.6 0.7 v pwm input (pwm) pin pwm pin high level input voltage v pwm h 2.5 v cc v pwm pin low level input voltage v pwm l 0 1.0 v pwm pin current i pwm pwm pin=0v -50 -10 a forward/reverse switching (f/r) pin f/r pin high level input voltage v f rh 2.5 v cc v f/r pin low level input voltage v fr l 0 1.0 v f/r pin current i fr fr pin=5v 10 50 a fg, rd output pin fg pin low level voltage v fg i fg =3ma 0.2 0.3 v fg pin leakage current i fg v fg =7v 10 a rd pin low level voltage v r d i rd =3ma 0.2 0.3 v rd pin leakage current i rd v rd =7v 10 a current limiter circuit limiter voltage v rf operating when rf=0.5 ? , i o =0.53a 0.238 0.265 0.291 v lock protection circuit output on-time lt1 0.35 0.50 0.65 s output off-time lt2 3.2 4.5 5.9 s output on/off ratio lrto lrto=lt2/lt1 4.9 9.0 16.8 thermal shutdown circuit operating temperature tsd *design guarantee 150 180 c hysteresis width tsd *design guarantee 30 c *design guarantee: this is a design target value, which will not be measured independently.
LV8806GQ no.a1974-3/6 package dimensions unit : mm (typ) 3341 block diagram sanyo : uct16(2.6x2.6) 2.6 0.25 2.6 0.6 0.4 (0.035) (0.55) (0.125) (c0.116) (0.13) 0.5 top view side view side view bottom view 21 16 pd max -- ta 0 1.0 0.2 --40 80 20 0 120 0.6 60 0.31 0.8 0.7 0.4 -20 40 100 ambient temperature, ta -- c allowable power dissipation, pd max -- w specified board: 50 50 1.6mm glass epoxy board single layer. v cc 4 uo sensorless logic fg rd refosc f/r switch pri drive 3 2 vo wo 5 12 f/r selector curr lim start osc 15 1 6 14 16 gnd tgnd1 tgnd2 rf 7 8 com comin fil 13 11 osc pwm 10 fg 9 rd com
LV8806GQ no.a1974-4/6 pin assignment pin function pin no. symbol function equivalent circuit 1 rf output current detection pin. drive current is detectable with resistors connected to gnd. 2 3 4 1 5 2 3 4 uo vo wo output pin. connected to motor coil. 5 v cc ic power supply pin and motor power supply pin. a capacitor is connected between gnd and this pin. 6 com connected to the midpoint of the motor. 6 7 8 uo vo wo 7 comin motor position detection comparator filter pin. a capacitor is connected between fil (pin8) and this pin. 8 fil motor position detection comparator filter pin. a capacitor is connected between comin (pin7) and this pin. 9 rd motor lock detection output pin. outputs high when motor is locked. 9 10 10 fg fg pulse output pin. this pin outputs pulse equivalent to one hall sensor system pulse output. 11 pwm pwm signal input pin. when input voltage is high, output transistor turns on. when input voltage is low, output transistors turn off, and motor stop. by controlling duty of input signal, motor rotation count is adjustable. motor is full-speed when pin is open. 11 v cc 12 f/r switches motor rotation direction. high level voltage input: u w v, low level voltage input: u v w. current flow into the motor according to the above order. motor rotates reversely when the order of energization is changed. 12 v cc reverse signal forward signal forward/reverse switching signal continued on next page. 1 v cc 2 rf 3 4 uo 9 10 f/r pwm rd top view LV8806GQ 5 6 7 8 11 12 16 15 14 13 wo vo com comin fil gnd fg tgnd2 tgnd1 osc
LV8806GQ no.a1974-5/6 continued from preceding page. pin no. symbol function equivalent circuit 13 osc motor start-up frequency setting pin. a capacitor is connected between this pin and gnd. the start-up frequency is adjustable with a capacitor and charge/discharge current (2.5a). 13 v cc 14 15 16 tgnd2 tgnd1 gnd gnd pin of the ic application circuit example (1)application to y-connector motor (2)application to delta-connector motor *1. [connection of power supply and gnd] gnd is connected to the power s upply line of control circuit. *2. [power supply st abilizer capacitor] the power supply stab ilizer capacitor needs to be 4.7a or higher. connect v cc and gnd as wide and shor t as possibl e. if the supply voltage increases due to th e kickback of coil as a result of using revers e connection protector diode, make sure to conn ect zener diode between the power supply and gnd. LV8806GQ uses synchronous rectification for high efficiency driv e. synchronous rectification is effective for heat reduction an d higher efficiency. however, it may increase s upply voltage under the following conditions: *when output duty is reduced rapidly. *pwm input frequency is low. if the supply voltage shall increase, make sure that it does not exceed the maximum ratings with the following measures: *select an optimal capacitor between power supply and gnd. *insert a zener diode between power supply and gnd. *3. [comin and fil] comin and fil are the filter capacitor connection pins. LV8806GQ detects the position of rotor using bemf signal generated during motor rotation. based on the information, current-carrying timing of the output is determined. by inserting a filter capacitor of about 1000 to 10000pf (recommendation) between comin a nd fil, start-up failure caused by noise is alleviated. however, if the capacitance is too high, timing of current-c arrying for output may be delayed during high-speed rotation and efficiency may be degraded. make sure that the filter capacitor is connected between comi n and fil as short as possible to avoid influence of noise. pwm uo vo wo com comin fil *3 *8 fg rd *8 fg rd *6 *6 rf *5 gnd tgnd2 tgnd1 osc *4 f/r v cc v cc v cc pwm *6 *2 *1 pwm uo vo wo com comin fil *3 *8 fg rd *8 fg rd *6 *6 rf *5 gnd tgnd2 tgnd1 osc *4 f/r v cc v cc v cc pwm *6 *2 *1 *7 *7 *7
LV8806GQ ps no.a1974-6/6 *4. [osc] capacitor connection pin for setting boot frequency. make sure to connect a capacitor of 500pf to 2200pf (recommenda tion) between this pin and gnd. the capacitor is required to determine boot frequency to start motor. how to define capacitance: the capacitance should allow the shortest boot time for the target rotation count and less variation. the higher the capacitanc e is, the more likely the variation occurs in boot time. on the other hand, the lower the ca pacitance is, the more likely an idling o ccurs. since an optimum value for osc pi n constant varies depends on motor characteris tics and boot current, make sure to confirm the constant when motor or circuit specification are changed. *5. [rf] current limit setting pin. when a pin voltage exceeds 0.265v, current limiter operates and the mode shifts to regeneration mode. the calculation formula is as follows. rf resistance value = 0.265v / desired current limit value *6. [pin protection resistor] it is recommended that resistors higher than 1k ? are connected serially to protect pi ns against misconnection such as gnd open and reverse connection. *7. [resistor for pseudo midpoint] delta connector motor does not have midpoint . therefore, we need to create a pseudo midpoint by external resistor. please note that the amplitude of bemf signal generated during motor rota tion varies depends on motor types. some motors require the external pseudo midpoint and others do not. *8. [fg, rd pull-up resistor] since fg and rd are open-drain output, ma ke sure to use pull-up resistors. it is recommended that the pull-up resistor is approximately 10k ? . this catalog provides information as of august, 2011. specifications and information herein are subject to change without notice. sanyo semiconductor co.,ltd. assumes no responsib ility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all sanyo semiconductor co.,ltd. products described or contained herein. sanyo semiconductor co.,ltd. strives to supply high-quality high-reliab ility pr oducts, however, any and all semiconductor products fail or malfunction with some probab ility. it is possible that these pr obab ilistic failures or malfunction could give rise to accidents 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 events cannot occur. such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. upon using the technical information or products described 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 for 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. any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. when designing equip ment, 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 co.,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 concerned 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 information storage or retrieval system, or otherwise, without the prior written consent of sanyo semiconductor co.,ltd.
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