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1/11 www.rohm.com 2010.02 - rev.a ? 2010 rohm co., ltd. all rights reserved. system motor driver ic series for cd / dvd players 4ch system motor driver ic bd8229efv description bd8229efv is btl driver of 5 input 4 output developed for driving spindle motor, sl ed/loading motor and the actuator coil. the hysteresis comparator for reset is built in, and the number of parts can reduce. features 1) 4ch btl driver 2) htssop-b24 power package is adopted, the set is miniaturized. 3) has a wide dynamic range prevcc=powvcc=8v,rl=8 , 6.0 (typ.) 4) built-in thermal-shut down circuit 5) separating vcc into pre and power (power divides into ch1/2 and ch3/4), can make better power efficiency 6) switches ch2 input by control input terminal (cnt). 7) incorporates mute function by cnt terminal and mute terminal 8) built in hysteresis comparator for reset applications car audio absolute maximum ratings parameter symbol limits unit power supply voltage prevcc,powvcc1, powvcc2 15 v input terminal voltage 1 vin1 *3 prevcc v input terminal voltage 2 vin2 *4 powvcc2 v power dissipation pd 1.1 *1 w 4.0 *2 operating temperature range topr -40~+85 storage temperature tstg -55~+150 junction temperature tjmax +150 *1 70mm70mm1.6mm,occupied copper foil is le ss than 3%,glass epoxy standard board) mounting. reduce power by 11.6mw for each degree above 25 . *2 exclusive standard board mounting. reduce power by 32.0mw for each degree above 25 . *3 vin1 application terminal in1, cnt, in2-1, in2-2, bias, in3, in4, mute *4 vin2 application terminal rstdet recommended operating conditions parameter symbol limits unit pre part power supply prevcc 4.5~14 *5 v dc motor system power supply powvcc1 4.5~prevcc *3 v actuator system power supply powvcc2 4.5~prevcc *3 v *5 set the power supply voltage taking allowable dissipation into considering. no.10011eat01
technical note 2/11 www.rohm.com 2010.02 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd8229efv electrical characteristics unless otherwise noted,ta=25 , prevcc=powvcc=8v, bias=1.65v, rl=8 ? parameter symbol limits unit condition min typ max quiescent dissipation current iq 30 45 ma at no-load < driver > output offset voltage (ch1,2) voof 12 -100 0 100 mv output offset voltage (ch3,4) voof 34 -50 0 50 mv maximum output amplitude (ch1,2) vom 12 5.4 6.0 v maximum output amplitude (ch3,4) vom 34 4.7 5.3 v closed circuit voltage gain (ch1,2) gv 12 24.0 25.7 27.4 db closed circuit voltage gain (ch3,4) gv 34 15.5 17.5 19.5 db mute terminal low level input voltage vml 0.5 v mute terminal high level input voltage vmh 2.0 v cnt terminal low level input voltage vcntl 0.5 v cnt terminal high level input voltage vcnth 2.0 v ldin terminal voltage sled input vldin 0.1 0.3 v cnt=?l? internal bias voltage vbin 1.53 1.65 1.77 v cnt=?h? < reset > reset release voltage vdet 1.19 1.25 1.31 v hysteresis voltage vhys 5 25 55 mv detection terminal outflow current icmp 50 150 na rstout output low voltage vrstout 0.1 0.3 v 3.3vpull-up 10k ? thermal derating curve rating for 70mm70mm(size), 1.6mm(thickness), copper foil occupation ratio less than 3%, and use of glass-epoxy substrate. fig.1 power dissipation 4.0 1.1 1.7 2.8
technical note 3/11 www.rohm.com 2010.02 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd8229efv package outlines htssop-b24(unit mm) fig.2 package outlines d8229efv lot.no
technical note 4/11 www.rohm.com 2010.02 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd8229efv block diagram fig.3:block diagram pin descriptions no. symbol description no. symbol description 1 powvcc1 ch1,2 power supply terminal 13 prevcc pre,reset power supply terminal 2 powgnd1 power gnd1 14 rstout reset output 3 vo1(-) driver ch1 negative output 15 rs tdet reset detection comparator input 4 vo1(+) driver ch1 positive outpu t 16 pregnd pre, reset block gnd 5 vo2(-) driver ch2 negative ou tput 17 mute mute terminal 6 vo2(+) driver ch2 positive output 18 in4 ch4 input 7 vo3(-) driver ch3 negativ e output 19 in3 ch3 input 8 vo3(+) driver ch3 positive output 20 bias bias input terminal 9 vo4(-) driver ch4 negative output 21 in2-2 ch2-2 input 10 vo4(+) driver ch4 positive output 22 in2-1 ch2-1 input 11 powgnd2 power gnd2 23 cnt control input terminal 12 powvcc2 ch3,4 power supply terminal 24 in1 in1 input t. s. d thermal shut-down 24 23 22 21 20 19 18 17 16 2 3 4 5 6 7 8 9 10 11 12 powvcc1 1 powgnd1 ch1 ch4 powvcc2 powgnd2 ch2 ch3 t.s.d mute prevcc cnt 1.65v bias 15 14 13 gnd 1.25v level shift level shift level shift level shift 20k 20k 20k 47k 47k 100k 100k 100k 47k 47k pre gnd powvcc1 powgnd1 vo1(-) vo1(+) vo2(-) vo2(+) vo3(-) vo3(+) vo4(-) vo4(+) powgnd2 powvcc2 in1 cnt in2-1 in2-2 bias in3 in4 mute pregnd rstdet rstout prevcc
technical note 5/11 www.rohm.com 2010.02 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd8229efv functional description 1.the driver can put the mute by switching the termina l mute and the terminal cnt to high level and low level. the table below shows the logic. input output mute cnt ch1,3,4 ch2 h h active ld on h l active sl on l h mute ld on l l mute mute sl : sled ld : loading 2.the mute works when the bias terminal (20pin) becomes 0.7v(typ .) or less. please set it to 1. 3v or more in the state of use normally.(however, the mute doesn't work as for ch2 at cnt='h'. ) 3.when the power-supply voltage becomes 3.8v(typ.) or le ss, the output terminal becomes the state of the mute. when the power-supply voltage rises up to 4.0v again, the driver part circuit stands up 4.the threshold voltage of powvcc2 reset can be calculated by the following expressions. r1 rstdet vin 1.25v /1.225v v rvcc r2 + 10k rstout vdet powvcc2 vdet r2 r2 + r1 = vin ? the threshold voltage of powvcc2 reset can be changed by external resistance r1 and r2. r1 and r2 recommend the resistance of 100k ? or less respectively. ? please make below the voltage of powvcc2(pin12) the voltage of the rstout output terminal that is the pull-up (rvcc). ? the characteristic chart of rstdet and rstout is shown as follows. hysterisis 25 mv(typ. 1.25v typ. rstout(v) rstdet v rvcc
technical note 6/11 www.rohm.com 2010.02 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd8229efv example of recommended circuit 24 23 22 21 20 19 18 17 16 2 3 4 5 6 7 8 9 10 11 12 powvcc1 1 powgnd1 ch 1 ch4 powvcc2 powgnd2 ch 2 ch 3 t.s.d mute prevcc cnt 1. 65 v bias powvcc m m powvcc act in act in bias sl/ld sl in ld in sp in mute prevcc 15 14 13 pre gnd 1.25 v reset level shift level shift level shift level shift rstdet 20k 20 k 20 k 47k 47k 100k 100k 100k 47k 47 k pr e gnd powvcc2 fig.4:application circuit
technical note 7/11 www.rohm.com 2010.02 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd8229efv the picture of application board wire connection reference for bd8229efv fig.5. application board wire connection
technical note 8/11 www.rohm.com 2010.02 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd8229efv the picture of application board pattern reference for bd8229efv top silkscreen overlay top layer bottom layer bottom silkscreen overlay bd8229efv
technical note 9/11 www.rohm.com 2010.02 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd8229efv 10k 10k 10k positive output 50k 50k 20k 47k 20k 2 10k 10k 100k 100k 100k 100k 100k 100k 20k 20k 20k 20k 47k 47k 20k 5k 25 negative output positive output negative output terminal equivalent circuit resistance in the above-mentioned terminal equivalent circuit chart is 25 , and a value at typical.
technical note 10/11 www.rohm.com 2010.02 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd8229efv notes for use 1.absolute maximum ratings we are careful enough for quality control about this ic. so, there is no problem under normal operation, excluding that it exce eds the absolute maximum ratings. however, this ic might be destroyed when the absolute maximum ratings, such as impressed voltages or the operating temperature range, is exceeded, and whether the destruc tion is short circuit mode or open circuit mode cannot be spec ified. please take into consideration the physical countermeasures for safety, such as fusing, if a particular mode that exceeds the a bsolute maximum rating is assumed. 2.reverse polarity connection connecting the power line to the ic in reverse polarity (from that recommended) will damage the part. please utilize the direct ion protection device as a diode in th e supply line and motor coil line. 3.power supply line due to return of regenerative current by reverse electromotive force, using electrolytic and ceramic suppress filter capacitors (0.1 f) close to the ic power input terminals (vcc and gnd) iare recommended. please note the electrolytic capa citor value decreases at lower temperatures and examine to dis pense physical measures for safety. and, for ics wi th more than one power supply, it is possible that rush current may flow instantaneously due to the internal powering sequenc e and delays. therefore, give special consideration to pow er coupling capacitance, power wiring, width of gnd wiring, and routing of wiring. 4.gnd line please keep the gnd line the lowest potential always, and check t he gnd voltage when transient voltages are connected to the ic . 5.thermal design do not exceed the power dissipation (pd) of the package specification rating under ac tual operation, and please design enough temperature margins. this product has exposed the frame to the ba ck side of the package, but please note that it is assumed to use heat radiation efficiency by the heat radiation for this part. please take the heat radiation pattern on not only the surface of the substrate but also the back of the substrate widely. 6.short circuit mode between terminals and wrong mounting do not mount the ic in the wrong direction and displacement, and be careful about the reverse-connection of the power connector . moreover, this ic might be destroyed when the dus t short the terminals between them or gnd. 7.radiation strong electromagnetic radiati on can cause operation failures. 8.aso (area of safety operation) do not exceed the maximum aso and the absolute maximum ratings of the output driver. 9.tsd (thermal shut-down) the tsd is activated when the junction tem perature (tj) exceeds tjmax, and the output terminal is switched to open. the guarant ee and protection of set are not purpose. therefore, please do not use this ic after tsd circuit operates, nor use it for assumption that operates the tsd circuit. 10.capacitor between output driver and gnd if a large capacitor is connected between the output driver and gnd, this ic might be destroyed when vcc becomes 0v or gnd, bec ause the electric charge accumulated in the capacitor flows to th e output driver. please set said capacitor to smaller than 0.1 f. 11.inspection by the set circuit board the stress might hang to ic by connecting the capacitor to the te rminal with low impedance. then, please discharge electricity in each and all process. moreover, when attaching or detaching from jig in the inspection process, please turn off the power before mountin g the ic, and turn on after mounting the ic, and vice versa. in addition, pl ease take into consideration t he countermeasures for electros tatic damage, such as giving the earth in assembly process, transportation or preservation. 12.input terminal this ic is a monolithic ic, and has p + isolation and p substrate for the el ement separation. therefore, a pa rasitic pn junction is firmed in this p-layer and n-layer of each element. for instance, the resist or or the transistor is connect ed to the terminal as shown in the figure below. when the gnd voltage potential is greater than the voltage pot ential at terminals a on the resistor, at terminal b on th e transistor, the pn junction operates as a parasitic diode. in addition, the parasitic npn transistor is formed in said parasitic diode and the n layer of surrounding elements close to said parasitic diode. these parasi tic elements are formed in the ic because of the voltage relati on. the parasitic element operating causes the in terference of circuit operation, then the wrong operation and destruction. therefore, please be careful so as not to operate the parasitic elements by impressi ng to input terminals lower volt age than gnd (p substrate). plea se do not apply the voltage to the input terminal when the power-supply vo ltage is not impressed. moreover, please impress each input ter minal lower than the power-supply voltage or equal to the specified range in the guaranteed voltage when the power-supply voltage is impressing. simplified structure of ic 13earth wiring pattern if small signal gnd and large current gnd exist, disperse thei r pattern. in addition, for voltage change by pattern wiring impe dance and large current not to change voltage of small signal gnd, each gr ound terminal of ic must be connected at the one point on the s et circuit board. as for gnd of external parts, it is similar to the above-mentioned. 14please make below the voltage of powvcc2(pin12) the voltage of the rstout output terminal that is the pull-up (rvcc). terminal-a parasitic element gnd p + p terminal-a terminal-b gnd p p-substrate cb gnd e e c b gnd surrounding elements resistor transistor(npn) p + p + p + p-substrate parasitic element parasitic element parasitic element terminal-b
technical note 11/11 www.rohm.com 2010.02 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd8229efv ordering part number b d 8 2 2 9 e f v - e 2 part no. part no. package efv: htssop-b24 packaging and forming specification e2: embossed tape and reel (unit : mm) ssop-b24 0.1 0.15 0.1 1.15 0.1 0.1 1 0.65 7.8 0.2 (max 8.15 include burr) 7.6 0.3 5.6 0.2 24 0.3min. 12 13 0.22 0.1 ? order quantity needs to be multiple of the minimum quantity. embossed carrier tape tape quantity direction of feed the direction is the 1pin of product is at the upper left when you hold reel on the left hand and you pull out the tape on the right hand 2000pcs e2 () direction of feed reel 1pin
r1010 a www.rohm.com ? 2010 rohm co., ltd. all rights reserved. notice rohm customer support system http://www.rohm.com/contact/ thank you for your accessing to rohm product informations. more detail product informations and catalogs are available, please contact us. notes no copying or reproduction of this document, in part or in whole, is permitted without the consent of rohm co.,ltd. the content specied herein is subject to change for improvement without notice. the content specied herein is for the purpose of introducing rohm's products (hereinafter "products"). if you wish to use any such product, please be sure to refer to the specications, which can be obtained from rohm upon request. examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the products. the peripheral conditions must be taken into account when designing circuits for mass production. great care was taken in ensuring the accuracy of the information specied in this document. however, should you incur any damage arising from any inaccuracy or misprint of such information, rohm shall bear no responsibility for such damage. the technical information specied herein is intended only to show the typical functions of and examples of application circuits for the products. rohm does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by rohm and other parties. rohm shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. the products specied in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, ofce-automation equipment, commu- nication devices, electronic appliances and amusement devices). the products specied in this document are not designed to be radiation tolerant. while rohm always makes efforts to enhance the quality and reliability of its products, a product may fail or malfunction for a variety of reasons. please be sure to implement in your equipment using the products safety measures to guard against the possibility of physical injury, re or any other damage caused in the event of the failure of any product, such as derating, redunda ncy, re control and fail-safe designs. rohm shall bear no responsibility whatsoever for your use of any product outside of the prescribed scope or not in accordance with the instruction manual. the products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospac e machinery, nuclear-reactor controller, fuel- controller or other safety device). rohm shall bear no responsibility in any way for use of any of the products for the above special purposes. if a product is intended to be used for any such special purpose, please contact a rohm sales representative before purchasing. if you intend to export or ship overseas any product or technology specied herein that may be controlled under the foreign exchange and the foreign trade law, you will be required to obtain a license or permit under the law.

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