BD7998EFS

1/3 Structure Product series Type Function 特 長 Silicon Monolithic Integrated Circuit 6ch Power Driver for CD-ROM,DVD-ROM BD7998EFS ・ The spindle driver and the SLED driver can highly effective drive with PWM drive system. ・ The actuator driver and the loading driver are liner BTL drive system and are achieving a low noise power. ○ Absolute maximum ratings Parameter POWER MOS power supply voltage SLRNF1,2 Preblock/BTL powerblock power supply voltage PWM control block power supply voltage Power dissipation Operating temperature range Storage temperature Joint part temperature Vcc=SLVDD,AVM DVcc Pd Topr Tstg Tjmax 15 7 2.0 ＃2 S ymbol SPVM1,2 Limits 15 #1 Unit V V V W ℃ ℃ ℃ -40～ 85 -55～ 150 150 #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 allowable dissipation into considering 〕 Parameter Spindle driver powerblock Power supply voltage Sled motor driver powerblock Power supply voltage Preblock / Loading driver powerblock Power supply voltage Actuator driver powerblock Power supply voltage PWM control block power supply voltage Spindle driver output current Actuator/sled motor/loading motor driver output current S ymbol SPVM SLVM SLVDD=Vcc AVM DVcc Iosp Ioo MIN － － AVM 4.3 4.3 － － T YP Vcc Vcc 12 5.0 5.0 1.2 0.5 #3 #3 MAX － － 14 Vcc 6.0 2.5 #4 Unit V V V V V A A 0.8 #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 protection against radioactive rays. REV. A 2/3 ○ Electrical characteristics (Unless otherwise noted, Ta=25℃ , Vcc=SPVM=SLVM=12V, DVcc=AVM=5V, SPRNF=0.33 Ω , SLRNF=0.5 Ω , VC=1.65V, RL=8Ω, RLSP=2Ω) Parameter Quiescent current1 Quiescent current2 Circuit current Quiescent current3 Standby-on current1 Standby-on current2 Input dead zone (one side) Sled driver block Input output gain Output On resistor（top and bottom） Symbol IQ1 IQ2 IQ3 IST1 IST2 VDZSL gmSL RONSL ILIMSL fosc VDZSP gmSP RONSP ILIMSP fosc VOFFT VOFT GVFT VOFLD VOLD GVLD VMVC VMVcc MIN. － － － － － 15 0.8 － 0.91 － 20 2.4 － 1.30 － -50 － 16.0 -50 － 16.0 0.4 3.4 TYP. 12 7 2.2 0.18 0.18 40 1.0 2.65 1.05 100 50 3.0 0.9 1.51 100 0 0.95 17.5 0 2.45 17.5 0.7 3.8 MAX. 20 12 4.4 0.4 0.4 65 1.2 3.8 1.19 － 90 3.6 1.7 1.73 － 50 1.75 19.0 50 3.5 19.0 1.0 4.2 Unit mA mA mA mA mA mV A/V Ω A kHz mV A/V Ω A kHz mV V dB mV V dB V V Condition Vcc（Loading OFF） Vcc（Loading ON） DVcc Vcc DVcc SLRNF=0.5Ω IL=500mA SLRNF=0.5Ω Output limit current PWM frequency Input dead zone (one side) Spindle driver block Input output gain Output On resistor（top and bottom） SPRNF=0.33Ω IL=500mA SPRNF=0.33Ω Output limit current PWM frequency Actuator driver block Output offset voltage Output saturation voltage Voltage gain Output offset voltage Output saturation voltage Voltage gain VC drop-muting Vcc drop-muting IL=500mA Loading driver block IL=500mA Others ○ Package outlines BD7998EFS Lot No. (UNIT : mm) Drawing No. : EX195-5002 REV. A 3/3 ○Block diagram / Application circuit AVM TKIN TKO+ LEVEL SHIFT TKO5V FCIN FCO+ LEVEL SHIFT FCO- AGND LDIN LDO+ LEVEL SHIFT LDOVcc 12V M 12V SLIN1 FF PRE Logic M LIMIT OSC SLIN2 FF PRE Logic LIMIT DGND DVcc HU+ HUREVERSE DETECT 5V 100kΩ FG FG HV+ HVHW+ HWHB HB SPVM1, SPVM2 U SPIN 3-phase MATRIX V W SPGND1, SPGND2 12V 5V FF Current LIMIT OSC SPRNF VC CTL1 CTL2 STBY/ BRAKE CONTROL T.S.D. REV. A Appendix 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. The products listed in this document are designed to be used with ordinary electronic equipment or devices (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. 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 www.rohm.com Copyright © 2007 ROHM CO.,LTD. THE AMERICAS / EUPOPE / ASIA / JAPAN Contact us : webmaster@ rohm.co. jp 21, Saiin Mizosaki-cho, Ukyo-ku, Kyoto 615-8585, Japan TEL : +81-75-311-2121 FAX : +81-75-315-0172 Appendix1-Rev2.0