1/3 rev. a structure silicon monolithic integrated circuit product series 6ch power driver for cd-rom,dvd-rom type BD7998EFS function ? the spindle driver and the sled driver can highly effective drive with pwm drive system. L ? the actuator driver and the loading dr iver are liner btl drive system and are achieving a low noise power. absolute maximum ratings parameter symbol limits unit power mos power supply voltage spvm1,2 slrnf1,2 15 #1 v preblock/btl powerblock power supply voltage vcc=slv dd ,avm 15 v pwm control block power supply voltage dvcc 7 v power dissipation pd 2.0 2 w operating temperature range topr -40 85 storage temperature tstg -55 150 joint part temperature tjmax 150 #1 power mos output terminals (17 20, 30, 33, 35pin) is contained. #2 pcb (70mm 70mm 1.6mm,occupied copper foil is less than 3%,glass epoxy standard board) mounting. reduce power by 16mw for each degree above 25 . recommended operating conditions (ta=-40 +85 ) 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 / loading driver powerblock power supply voltage slv dd =vcc avm 12 14 v actuator driver powerblock power supply voltage avm 4.3 5.0 vcc v pwm control block power supply voltage dvcc 4.3 5.0 6.0 v spindle driver output current iosp 1.2 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 3.0a in case of the current 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 pr otection against radioactive rays.
2/3 rev. a electrical characteristics (unless otherwise noted, ta = 2 5 , vcc=spvm=slvm=12v, dvcc=avm=5v, sprnf=0.33 , slrnf=0.5 , vc=1.65v, rl=8 , rlsp=2 ) parameter symbol min. typ. max. unit condition circuit current quiescent current1 iq1 12 20 ma vcc loading off quiescent current2 iq2 7 12 ma vcc loading on quiescent current3 iq3 2.2 4.4 ma dvcc standby-on current1 ist1 0.18 0.4 ma vcc standby-on current2 ist2 0.18 0.4 ma dvcc sled driver block input dead zone (one side) vdzsl 15 40 65 mv input output gain gmsl 0.8 1.0 1.2 a/v slrnf=0.5 output on resistor top and bottom ronsl 2.65 3.8 il=500ma output limit current ilimsl 0.91 1.05 1.19 a slrnf=0.5 pwm frequency fosc 100 khz spindle driver block input dead zone (one side) vdzsp 20 50 90 mv input output gain gmsp 2.4 3.0 3.6 a/v sprnf=0.33 output on resistor top and bottom ronsp 0.9 1.7 il=500ma output limit current ilimsp 1.30 1.51 1.73 a sprnf=0.33 pwm frequency fosc 100 khz actuator driver block output offset voltage vofft -50 0 50 mv output saturation voltage voft 0.95 1.75 v il=500ma voltage gain gvft 16.0 17.5 19.0 db loading driver block output offset voltage vofld -50 0 50 mv output saturation voltage vold 2.45 3.5 v il=500ma voltage gain gvld 16.0 17.5 19.0 db others vc drop-muting vmvc 0.4 0.7 1.0 v vcc drop-muting vmvcc 3.4 3.8 4.2 v package outlines (unit : mm) drawing no. : ex195-5002 lot no. BD7998EFS
3/3 rev. a block diagram / application circuit pre logic pre logic ff ff osc m 12v limit limit tko+ tko- tkin avm level shift fco+ fco- fcin level shift ldo+ ldo- ldin agnd level shift slin1 slin2 vcc m 12v hb fg 100k hu+ hu- hv+ hv- hw+ hw- u v w fg 5v hb spvm1, spvm2 t.s.d. dgnd spin dvcc 3-phase matrix reverse detect current limit ff osc sprnf spgnd1, spgnd2 5v 12v vc ctl2 ctl1 stby/ brake control 5v
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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