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| 01W138A 6-channel Combo driver IC BD7907FS Description BD7907FS is a 6-channel driver IC that integrates all drivers necessary for CD-ROM, and DVD-ROM systems into a single chip. The built-in 2-channel sled motor driver is used for the stepping motor. Low heat operation can be achieved by applying the PWM driving system for sled and spindle motor drivers. Features 1) Motor drivers for spindle, sled (2-channel) and loading, and actuator drivers for tracking are all integrated into a single chip. 2) ON/OFF for each driver, brake mode switching of spindle and stand-by mode switching can be controlled by 2-wire serial data. 3) Built-in triangular-wave generator 4) SSOP-A54 package 5) Built-in thermal shut-down circuit 22.00.2 54 28 13.40.3 11.40.2 4.00.2 1 6.00.2 2.20.1 27 0.150.1 0.1 0.8 0.360.1 0.1 SSOP-A54 Applications CD-ROM, DVD-ROM, and any other equipment driven by optical DISC Absolute Maximum Ratings (Ta=25C) Parameter Power MOS supply voltage Pre/BTL power supply voltage PWM control supply voltage Power dissipation Operating temperature range Storage temperature range Symbol SPVM1,2, SLRNF1,2 VCC, SLVDD, AVM Limits 15 15 7 2.6 -35 -55 ~ ~ *1 +85 +150 Unit V V V W DVCC Pd Topr Tstg C C *Derating : 20.8mW/C for operation above Ta=25C PCB (70mm 70mm 1.6mm glass epoxy board) January, 2002 0.3Min. Recommended Operating Conditions (Ta=25C) Parameter Symbol Min. -- -- Typ. VCC 12 5.0 5.0 Power MOS supply voltage1 SPVM1,2 Power MOS supply voltage2 SLRNF1,2 SLVDD,VCC Pre-driver supply voltage Power driver supply voltage AVM DVCC PWM control supply voltage 2 2 2 SLVDD Max. -- -- 14 Vcc 6.0 Unit V V V V V AVM 4.3 4.3 SPVM1,2 must be established with the same voltage of Vcc and, SLRNF1,2 must be established with the same voltage of SLVDD. Electrical Characteristics (Unless otherwise noted; Ta=25C, SLVDD=VCC=12V, DVCC=AVM=5V, VC=1.65V, SPRNF=0.33, SLRNF=0.5) Parameter Feed motor driver Input dead zone (One-side) I/O gain Output ON resistance VDZSL gmSL RONUSL 15 0.8 -- 0.8 20 2.4 -- 1.2 -50 -- 16.0 -50 -- 16.0 40 1.0 3.2 0.94 50 3.0 0.95 1.42 0 0.9 17.5 0 1.55 17.5 65 1.2 4.2 1.08 90 3.6 1.7 1.64 50 1.6 19.0 50 2.2 19.0 mV A/V A mV A/V A mV V dB mV V dB STM Symbol Min. Typ. Max. Unit Conditions SLRNF=0.5 Io=500mA (Top+Bottom) SLRNF=0.5 Output limit current ILIMSL Spindle driver SPRNF=0.33 Ip=500mA (Top+Bottom) SPRNF=0.33 Io=500mA (Top+Bottom) Io=500mA (Top+Bottom) Application Circuit DVCC FOCUS TRACKING =5V IN IN VCC= 12V TRACKING LOADING M FOCUS AVM =5V SLED1 43 42 41 40 39 38 37 36 54 53 52 51 50 49 48 47 46 45 44 SLED2 35 34 33 32 SLVM =12V SLED SLED IN2 IN1 SLRNF2 31 SLRNF1 30 29 47K -+ LEVEL SHIFT 47K LEVEL SHIFT 94K 94K 47K LEVEL SHIFT PRE LOGIC PRE LOGIC FF 94K TSD FF Current COMP LIMIT OSC LIMIT 94K BD7902FS FF FG REVERSE DETECT PWM OUT OSC Polarity COMP Current LIMIT 94K -+ 15K 15K 3-phase MATRIX HALL BIAS -+ 47K 3FG STBY/ BRAKE CONTROL 14 12 13 15 16 17 10 11 18 19 20 21 22 23 24 25 26 HALL2 HALL1 HALL3 3FG SPINDLE -COM -COM VC 5V SPRNF SPVM =12V SPINDLE LOADING IN IN 27 1 2 3 4 5 6 7 8 9 28 47K -+ -+ -+ 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 use silicon as a basic material. 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 with 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. About Export Control Order in Japan Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control Order in Japan. In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause) on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction. Appendix1-Rev1.0 |
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