01W138A 6-channel Combo driver IC BD7907FS Dimension (Units : mm) 22.0±0.2 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 <Spindle driver> 6) Highly efficient by applying the PWM drive and Low ON resistance POWER MOSFET 7) Built-in current limit, hall bias, short brake, FG 3-phase synthesis output, and reverse protection circuit <Sled motor driver> 8) Highly efficient due to the PWM drive 9) Built-in 2-channel for the stepping motor <Actuator, loading driver> 10) Low noise due to the linear BTL driver and smooth spin 4.0±0.2 1 27 0.15±0.1 0.1 2.2±0.1 6.0±0.2 0.8 0.36±0.1 0.1 SSOP-A54 Applications CD-ROM, DVD-ROM, and any other equipment driven by optical DISC Absolute Maximum Ratings (Ta=25˚C) Parameter Power MOS supply voltage Pre/BTL power supply voltage PWM control supply voltage Power dissipation Symbol Limits Unit SPVM1,2, SLRNF1,2 VCC, SLVDD, AVM 15 V V 15 V DVCC 7 Pd 2.6 *1 W ~ ~ +85 ˚C ˚C Operating temperature range Topr Storage temperature range Tstg –35 –55 +150 0.3Min. 28 11.4±0.2 54 13.4±0.3 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. *Derating : 20.8mW/˚C for operation above Ta=25˚C PCB (70mm ¥ 70mm ¥ 1.6mm glass epoxy board) January, 2002 Recommended Operating Conditions (Ta=25˚C) Parameter Symbol Min. 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 AVM 4.3 4.3 ∗2 Typ. VCC Unit Max. — — ∗2 ∗2 SLVDD 12 5.0 5.0 V V V V V 14 Vcc 6.0 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=25˚C, SLVDD=VCC=12V, DVCC=AVM=5V, VC=1.65V, SPRNF=0.33Ω, SLRNF=0.5Ω) Parameter Symbol Min. Typ. Max. Unit Conditions Feed motor driver Input dead zone (One-side) VDZSL 15 40 65 mV I/O gain gmSL 0.8 1.0 1.2 A/V RONUSL — 3.2 4.2 Ω Io=500mA (Top+Bottom) Output limit current ILIMSL Spindle driver <Torque command I/O> 0.8 0.94 1.08 A SLRNF=0.5Ω Output ON resistance SLRNF=0.5Ω Input dead zone (One-side) VDZSP 20 50 90 mV I/O gain gmSP 2.4 3.0 3.6 A/V RONUSP — 0.95 1.7 Ω Ip=500mA (Top+Bottom) ILIMSL 1.2 1.42 1.64 A SPRNF=0.33Ω Output offset voltage VOFFT –50 0 50 mV Output saturation voltage VOHFT — 0.9 1.6 V GVFT 16.0 17.5 19.0 dB Output offset voltage VOFLD –50 0 50 mV Output saturation voltage Voltage gain VOHLD GVLD — 16.0 1.55 17.5 2.2 19.0 V dB Output ON resistance Output limit current SPRNF=0.33Ω Actuator driver Voltage gain Io=500mA (Top+Bottom) Loading driver Io=500mA (Top+Bottom) Application Circuit SLVM =12V SLRNF1 SLED SLED IN2 IN1 28 32 33 SLED2 34 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 SLED1 SLRNF2 AVM =5V 30 LOADING M 29 STM FOCUS 31 TRACKING 35 DVCC FOCUS TRACKING =5V IN IN VCC= 12V 47K - + LEVEL SHIFT LEVEL SHIFT 47K LEVEL SHIFT PRE LOGIC 94K PRE LOGIC 47K - + 94K - + TSD 94K FF LIMIT 47K - + FF LIMIT OSC 94K BD7902FS Current COMP FF OSC Polarity COMP PWM OUT Current LIMIT 94K - + 15K 3-phase MATRIX 27 26 25 STBY/ BRAKE CONTROL 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 HALL3 5 4 HALL2 3 2 1 47K 15K 3FG HALL BIAS HALL1 - + 24 REVERSE DETECT 23 FG 3FG SPINDLE 5V SPRNF SPVM =12V µ -COM µ -COM SPINDLE LOADING IN IN VC 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