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 el ectronics 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. 33009 ms pc 20090114-s00008 no.a1407-1/10 LV8804V overview the LV8804V is a motor driver for pc and server fans. feature ? direct pwm 3-phase sensorless motor driver specifications absolute maximum ratings at ta = 25 c parameter symbol conditions ratings unit v cc maximum supply voltage v cc max 16 v vg maximum supply voltage vg max 21 v out pin maximum output current i out max uo, vo, and wo pins 1.2 a softst pin withstand voltage v softst max 6v fr pin withstand voltage v fr max 6v ctl pin withstand voltage v ctl max 6v minsp pin withstand voltage v minsp max 6v fg output pin withstand voltage v fg max 16 v fg pin maximum output current i fg max 5ma 1/2fg output pin withstand voltage v 1/2fg max 16 v 1/2fg pin maximum output current i 1/2fg max 5ma rd output pin withstand voltage vrd max 16 v rd pin maximum output current ird max 5ma allowable power dissipation 1 pd max1 independent ic 0.6 w allowable power dissipation 2 pd max2 mounted on designated board * 1.3 w operating temperature topr -40 to +85 c storage temperature tstg -55 to +150 c * : when mounted on the designated 76.1mm 114 .3mm 1.6mm, glass epoxy board (single-layer) bi-cmos lsi pc and server fan motor driver orderin g numbe r : ena1407
LV8804V no.a1407-2/10 allowable operating conditions at ta = 25 c parameter symbol conditions ratings unit v cc supply voltage v cc 6 to 15 v softst input voltage range v softst 0 to vreg v fr input voltage range v fr 0 to vreg v ctl input voltage range v ctl 0 to vreg v minsp input voltage range v minsp 0 to vreg v electrical characteristics at ta = 25 c, v cc = 12v, unless otherwise specified ratings parameter symbol conditions min typ max unit circuit current 1 i cc 1 3 4 ma charge pump block charge pump output voltage v vg 17 v regulator block 5v regulator voltage v vreg 4.75 5 5.25 v output on resistance high-side output transistor on resistance ron (h) i o = 0.7a, vg = 17v 0.6 1.0 ? low-side output transistor on resistance ron (l) i o = 0.7a, v cc = 12v 0.6 1.0 ? sum of high-/low-side output transistor on resistance ron (h+l) i o = 0.7a, v cc = 12v, vg = 17v 1.2 2 ? startup oscillator (osc) pin osc pin charge current i osc c -2.5 a osc pin discharge current i osc d 2.5 a control voltage input (ctl) pin motor drive on voltage input range v ctl on 0 3 v motor drive off voltage input range v ctl off 3.5 vreg v minimum speed setting pin minimum speed setting voltage input range v minsp 1 1 3 v minimum speed releasing voltage input range v minsp 2 4 vreg v forward/reverse switching pin high-level input voltage range v fr h order of current application : uout vout wout 4 vreg v low-level input voltage range v fr l order of current application : uout wout vout 0 1 v fg, 1/2fg, and rd output pins fg output pin low-level voltage v fg when i o is 2ma 0.25 0.35 v 1/2fg output pin low-level voltage v 1/2fg when i o is 2ma 0.25 0.35 v rd output pin low-level voltage v rd when i o is 2ma 0.25 0.35 v current limiter circuit limiter voltage v rf limit current set to 1a when rf is 0.25 ? . 0.225 0.25 0.275 v constraint protection circuit ct pin high-level voltage v ct h 2.25 2.8 2.95 v ct pin low-level voltage v ct l 0.43 0.5 0.65 v ct pin charge current i ct c -2.9 -2.5 -2.2 a ct pin discharge current i ct d 0.23 0.25 0.32 a ict charge/discharge ratio r ct 7 10 13 soft start circuit soft start releasing voltage v softst 2.5 v softst pin charge current i softst 0.6 a thermal protection circuit thermal protection circuit operating temperature tsd design target * 150 180 210 c * : design target value and no measurement is made. the thermal protection circuit is incorporated to protect the ic from burno ut or thermal destruction. since it operates outside the ic's guaranteed operating range, the cust omer's thermal design should be performed so that the thermal protection circuit will not be activated when the fan is running under normal operating conditions.
LV8804V no.a1407-3/10 package dimensions unit : mm (typ) 3361 pin assignment sanyo : ssop36j(275mil) 15.0 7.6 5.6 (3.5) (4.0) 0.2 0.5 0.1 (1.5) 1.7 max 0.3 0.8 (0.7) 1 36 2 top view side view side view bottom view pd max ? ta 0 1.0 0.5 1.5 ? 30 ? 20 80 100 0.57 1.30 0.60 0.26 60 20 40 0 120 ambient temperature, ta ? c allowable power dissipation, pd max ? w thermal resistance evaluation board : 76.1 114.3 1.6mm 3 glass epoxy thermal resistance evaluation board independent ic 1 comin 2 fil 3 vreg 4 vreg 5 nc 6 nc 7 f/r 8 ctl 9 minsp 10 softst 36 com 35 v cc 34 v cc 33 v cc 32 v cc 31 nc 30 uo 29 vo 28 wo 27 rf 11 fg 26 rf 12 1/2fg 25 nc 13 nc 24 rf 14 rd 23 sub_gnd 15 nc 22 cpc 16 ct 21 cp 17 osc 20 vg 18 gnd 19 gnd top view LV8804V
LV8804V no.a1407-4/10 block diagram charge pump vreg selector curr lim refosc ctlamp start osc ctosc rd fg pri drive sensorless logic v cc uo vo com wo rf f/r vreg cpo cp ct vg rd fg 1/2fg ctl ctl minsp vreg vref osc fil comin com softst gnd sub_gnd
LV8804V no.a1407-5/10 pin function pin no. pin name function equivalent circuit 36 com motor middle point connection. 1 comin motor position detection comparator filter pin. a capacitor must be connected between this pin and the fil pin (pin 2). 2 fil motor position detection comparator filter pin. a capacitor must be connected between this pin and the comin pin (pin 5). vg 36 1 2 3 4 vreg regulator voltage (5v) output. a capacitor must be connected between these pins and ground. v cc vref 3 4 5, 6, 13, 15, 25, 31 nc no connection. these pins are not connected with the internal parts. 7 f/r motor rotation direction switching. a high-level input causes current to flow into the motor in the order of u, v, and w and a low-level input in the order of u, w, and v. changing the order of current application turns the motor in the opposite direction. vreg 100k ? 7 15k ? reverse signal forward signal forward/reverse switching signal 8 ctl motor control voltage input. when the control voltage is higher than 3 v (3v < ctl voltage), the motor stops. the motor speed is controlled by varying the control voltage within the range of 3v to 1v (3v > ctl voltage > 1 v). when the control voltage becomes lower that 1v (1 v > ctl voltage), the current limit set by the rf resistor is reached. 9 minsp minimum speed setting voltage input. the minimum speed of the motor can be set by resistor-dividing the regulator voltage and feeding the resultant voltage that is within the range of 1v to 3v (1 v < minsp < 3v). 500 ? vreg 8 500 ? 9 10 softst soft start time setting. the motor can be started smoothly by connecting a capacitor between this pin and ground. 500 ? vreg 10 continued on next page.
LV8804V no.a1407-6/10 continued from preceding page. pin no. pin name function equivalent circuit 11 fg fg pulse output. this pin outputs a hall sensor system equivalent pulse signal. 12 1/2fg fg pulse output. this pin outputs 1/2 hall sensor system equivalent pulse signal. 14 rd motor lockup detection output. output is fixed high when motor is locked up. 12 11 14 16 ct motor lockup detection time setting. when the motor lockup condition is detected, the protection time period before the protection circuit is activated is set by connecting a cacacitor between this pin and ground. 500 ? vreg 16 17 osc motor startup frequency setting. a capacitor must be connected between this pin and ground. the startup frequency is adjusted by controlling the charge/discharge current and capacitance of the capacitor. vreg 17 500 ? 500 ? 18, 19 gnd gnd pin. 20 vg charge pump step-up voltage output. a capacitor must be connected between this pin and the v cc pin or ground. 21 cp charge pump step-up pulse output pin. a capacitor must be connected between this pin and the cpc pin (pin 22). 22 cpc charge pump step-up pin. a capacitor must be connected between this pin and the cp pin (pin 21). vreg v cc 21 22 20 23 sub_gnd gnd pin. 32, 33, 34, 35 v cc power supply for the ic and motor. capacitors must be connected between these pins and ground. 30 29 28 uo vo wo output pins. connect these pins to the u, v, and w of the motor coil. 24, 26, 27 rf output current detection pins. the drive current is detected by connecting a resistor between these pins and ground. 32 33 34 35 24 26 27 30 29 28
LV8804V no.a1407-7/10 LV8804V functional description 1 control characteristics the current flowing to the motor and the control characteris tics are determined by adjust ing the resistance of the rf resistor. by connecting a resistor with a resistance of 0.25 ? between the rf pin and gnd, the limit current is set at a motor current of 1a, and the control characteristics sh own in the diagram above are achieved. by increasing the rf resistance, the limit current is reduced; co nversely, by reducing the rf re sistance, the limit current is increased. since i o max. is 1.2a, the rf resistance must be set in such a way that the current flowin g to the motor does not exceed this maximum value. by varying the ctl voltage between 1v and 3v, the current flowing to the output is limited. pwm control is exercised within the voltage range above (1v to 3v) to control the motor speed. when the ctl voltage is less than 1v, the current limiter valu e determined by the rf resistance is reached, and the motor speed is limited. when the ctl voltage is greater than 3v, pwm is reduced to 0%, and the motor stops. (however, the motor does not stop if the minimum speed has been set.) the minimum speed can be set by resistor-dividing the reg voltage (5v) to create a voltage of 1v to 3v, and inputting this voltage to the minsp pin. if the minimum speed is not going to be set, the minsp pin and ctl pin (pin 8) must be short-circuited. 2. timing at startup (soft start) when rf = 0.25 ? irf 1a 0v 1v 2v 3v 4v vctl the gradient and limit current are determined by the resistance of the rf pin. minimum speed this minimum speed is determined by the minsp pin voltage. 0.5a v cc pin ctl pin stop soft start full speed stop full speed softs pin the gradient changes in accordance with the capacitance of the softst pin. (the higher the capacitance, the steeper the gradient.)
LV8804V no.a1407-8/10 application circuit example *1. power supply and gnd wiring the gnd is connected to the control circuit power supply system. *2. power-side power stabilization capacitor for the power-side power stabilizati on capacitor, use a capacitor of 10 f or more. connect the capacitor between v cc and gnd with a thick and along the shortest possible route. the v cc pins (pins 32, 33, 34, and 35) must be short-circuited on the print pattern. the gnd pins (pins 18 and 19) and the sub_gnd pin (pin 23) must be short-circuited on the print pattern. *3. comin and fil pins these pins are used to connect the filter capacitor. the lv 8804 uses the back emf signal generated when the motor is running to detect the information on the rotor position. the ic determines the timing at which the output block applies current to the motor based on the position information obta ined here. insert a filter capacitor with a capacitance ranging from 1,000pf to 10,000pf (reference value) between the comin pin and fil pin to prevent any motor startup miss-operation that is caused by noise. however, care must be taken since an excessively high capacitance will give rise to deterioration in efficiency and delays in the output power-on timing while the motor is running at high speed. furthermore, connect the capacitor between the comin pin and fil pin as close as possible in order to avoid the effects of noise from other sources. *4. ct pin this pin is used to connect the lock detection capacitor. the constant-current charging and constant-current discharging circuits incorporated causes locking when the pin voltage reaches 2.5v, and releasing the lock protection when it drops to 0.5v. this pin must be connected to the gnd when it is not going to be used. pwm 68k ? 10k ? 1 f/10v *9 0.1 f *9 0.1 f *8 *2 10 f/25v 47k ? 47k ? 1 f *4 1 f *6 1 f *7 1000pf *5 0.25 ? *3 0.01 f vg cp cpc vreg minsp ctl fr ct softst osc uo vo wo com comin fil fg 1/2fg rd rf v cc gnd sub gnd *1 22k ? rrd=10k to 100k ? rfg, r1/2fg =10k to 100k ? 27k ? 47k ?
LV8804V no.a1407-9/10 *5. rf pins these pins are used to set the current limit. when the pin voltage exceeds 0.25v, the cu rrent is limited, and regeneration mode is established. in the application circuit, this voltage is set in such a way that the current limit will be established at 1a. the calculation formula is given below. rf resistance = 0.25v/ta rget current limit value all the rf pins (pins 24, 26 and 27) must be short-circuited on the print pattern. *6. softst pin this pin is used to set the soft start. by connecting a capacitor between this pin and gnd , the motor speed can be increased gradually. when the pin voltage exceeds 2.5v, the soft start is re leased, and the LV8804V is switched to normal control. if the soft start function is not going to be used, connect the pin to the vreg pin. *7. osc pin this pin is used to connect the capacitor for setting the startup frequency. a capacitor with a capacitance ranging from about 500pf to 2,200pf (reference value) must be connected between this pin and gnd. the osc pin determines the motor startup frequency, so be sure to connect a capacitor to it. select a capacitance value that will result in the shortest possible startup time for achieving the target speed and produce minimal variations in the startup time. if the capacitance is too high, variations in the startup time will increase; conversely, if it is too low, the motor may idle. the optimum osc constant depends on the motor characteristics and startup current, so be sure to recheck them when the type of motor used or circuit specifications are changed. *8. minsp pin this pin is used to input the voltage to set the minimum speed. the minimum speed can be set by resistor-dividing the vreg voltage (5v) to create a voltage of 1 to 3v, and inputting this voltage to the minsp pin. if the minimum speed is not going to be set, the minsp pin and ctl pin (pin 8) must be short-circuited. *9. vg, cp, and cpc pins these pins are used to connect the capacitors to genera te the pre-drive voltage and stabilize the pre-drive power supply. be sure to connect these capacitors in order to generate the drive voltage for the high-side (upper) output dmos transistor. *10. vreg pins these are the control system power supply pin and regulator output pin, which create the power supply of the control unit. be sure to connect a capacitor between this pin and gnd in order to stabilize control system operation. since these pins are used to supply curr ent for control and generate the charge pump voltage, connect a capacitor with a capacitance that is higher th an that of the capacitor connected to the charge pump. both the vreg pins (pins 3 and 4) must be short-circuited on the print pattern.
LV8804V ps no.a1407-10/10 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 probabi lity. 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 march, 2009. specifications and information herein are subject to change without notice.
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