1/3 rev. a structure silicon monolithic integrated circuit product series 7ch power driver for cd,dvd rw,dvd-ram type BD7776ARFS characteristic ? 3-phase-sensor-less system, therefore don?t need three hall sensors. L ? output current detection resister is not necessary with internally equipped detection circuit. absolute maximum ratings parameter symbol limits unit power mos power supply voltage spvm,slvm 15 #1 v preblock/btl powerblock power supply voltage vcc, avm,ldvm 15 v pwm control block power supply voltage dvcc 7 v power dissipation pd 1.5 2 w operating temperature range topr -20 70 storage temperature tstg -55 150 junction temperature tjmax 150 #1 power mos output terminals (29 32, 35 37pin) is contained. #2 pcb (70mm70mm1.6mm,occupied copper foil is less than 3%,glass epoxy standard board) mounting. reduce power by 12mw for each degree above 25 . recommended operating conditions (ta=-20 +70 ) (set the power supply voltage taking allo wable dissipation into considering) parameter symbol min typ max unit spindle driver powerblock power supply voltage spvm vcc #3 v sled motor driver powerblock power supply voltage slvm vcc #3 v preblock power supply voltage vcc 10.8 12 13.2 v loading driver power block power supply voltage ldvm 4.3 5.0 vcc #3 v actuator driver powerblock power supply voltage avm 4.3 5.0 5.5 v pwm control block power supply voltage dvcc 4.3 5.0 5.5 v spindle driver output current iosp 1.0 2.5 #4 a actuator/sled motor/loading motor driver output current ioo 0.5 0.8 a #3 set the same supply voltage to spvm,slvm and vcc #4 the current is guaranteed 3.5a in case of the short-ci rcuit braking mode and the current which is turned on/off in a duty-ratio of less than 1/10 with a maximum on-time of 5msec. this product isn?t designed for protection against radioactive rays. status of this document the japanese version of this document is the formal specification. a customer may use this translation version only for a reference to help reading the formal version. if there are any differences in translation version of this document , formal version takes priority.
2/3 rev. a electrical characteristics (unless otherwise noted, ta=25 , vcc=spvm=slvm=12v, dvcc=avm=ldvm=5v, vc=1.65v, rl=8 , rlsp=2 ) parameter symbol min. typ. max. unit condition circuit current quiescent current 1 iq1 14 25 ma vcc when loading off quiescent current 2 iq2 7 12 ma vcc when loading on quiescent current 3 iq3 6.5 11 ma dvcc standby-on current1 ist1 0 100 a vcc standby-on current 2 ist2 0 100 a dvcc sled motor driver block input dead zone (one side) vdzsl 0 20 80 mv input output gain gmsl 0.75 1.0 1.25 a/v rsllim=3k output on resistor ronsl 2.2 3.0 il=500ma output limit current ilimsl 0.85 1.0 1.15 a rsllim=3k pwm frequency fsl 100 khz spindle driver block input dead zone (one side)1 vdzsp1 20 55 90 mv vlrpm=l input dead zone (one side)2 vdzsp2 20 220 450 mv vlrpm=h input output gain h gmsph 2.3 3.0 3.7 a/v rsplim=1.3k , vlrpm=l input output gain l gmspl 0.46 0.6 0.74 a/v rsplim=1.3k , vlrpm=h output on resistor ronsp 1.1 1.7 il=500ma output limit current ilimsp 1.3 1.55 1.8 a rsplim=1.3k pwm frequency fsp 167 khz focus driver block output offset voltage voff -20 0 20 mv output saturation voltage vohf 0.7 1.6 v il=500ma voltage gain h gvfh 19.6 21.6 23.6 db vlrpm=l voltage gain l gvfl 13.6 15.6 17.6 db vlrpm=h tracking driver block output offset voltage voft -20 0 20 mv output saturation voltage voht 0.7 1.6 v il=500ma voltage gain gvt 19.6 21.6 23.6 db tilt driver block output offset voltage voftl -50 0 50 mv output saturation voltage vohtl 0.7 1.6 v il=500ma voltage gain gvtl 19.6 21.6 23.6 db loading driver block output offset voltage vofld -50 0 50 mv output saturation voltage 1 vold1 0.6 1.6 v il=500ma ldvm=5v output saturation voltage 2 vold2 1.9 3.5 v il=500ma ldvm=12v voltage gain gvld 15.5 17.5 19.5 db others vc drop-muting vmvc 0.4 0.7 1.0 v vcc drop-muting vmvcc 3.45 3.85 4.25 v package outlines htssop-a44r (unit : mm) bd776rfs lot no. product number a
3/3 rev. a block diagram / application circuit fco+ fco- fcin avm 5v tko+ tko- tkin tlo+ tlo- tlin prtflg prtrst ldo+ ldo- ldin agnd lrpm vc ctl1 ctl2 u w v splim spvm spin com c_com c_out slo1+ sllim slvm slin1 slo1- slo2+ slo2- slin2 ldvm m slgnd 100k 5v rsllim 3k spgnd fg pre logic pre logic ff ff bemf detecter logic t.s.d. stby brake control lrpm rsplim 1.3k 12v 12v 12v ctl2 ctl1 vc fg spin slin2 slin1 ldin prt rst prt flg tlin tkin fcin 160k 160k 26.5k 26.5k 160k 160k 26.5k 26.5k 160k 160k 26.5k 26.5k 160k 160k 26.5k 26.5k 160k 160k 26.5k 26.5k 160k 160k 26.5k 26.5k 80k 74k 80k 80k 74k 40k 80k vcc 5/12v curr. feed io/533 level shift vin/533 curr. limit curr. feed io/533 level shift vin/533 osc curr. feed io/1600 curr. limit dvcc 5v 100k 5v level shift vin/1600 protect
notes no technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of rohm co.,ltd. the contents described herein are subject to change without notice. the specifications for the product described in this document are for reference only. upon actual use, therefore, please request that specifications to be separately delivered. application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. rohm co.,ltd. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by rohm co., ltd. is granted to any such buyer. products listed in this document are no antiradiation design. appendix1-rev2.0 thank you for your accessing to rohm product informations. more detail product informations and catalogs are available, please contact your nearest sales office. rohm customer support system the americas / eupope / asia / japan contact us : webmaster@ rohm.co. jp www.rohm.com copyright ? 2007 rohm co.,ltd. the products listed in this document are designed to be used with ordinary electronic equipment or de vices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of which would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. it is our top priority to supply products with the utmost quality and reliability. however, there is always a chance of failure due to unexpected factors. therefore, please take into account the derating characteristics and allow for sufficient safety features, such as extra margin, anti-flammability, and fail-safe measures when designing in order to prevent possible accidents that may result in bodily harm or fire caused by component failure. rohm cannot be held responsible for any damages arising from the use of the products under conditions out of the range of the specifications or due to non-compliance with the notes specified in this catalog. 21, saiin mizosaki- cho, ukyo-ku, kyoto 615-8585, japan tel : +81-75-311-2121 fax : +81-75-315-0172 appendix
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