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| BH6573FV Optical disc ICs PWM driver for CD BH6573FV BH6573FV is a 4-channel PWM driver developed for driving stepping motor, and DC motor of DSC, and also developed for driving DC motor, and actuator of CD / MD. This IC has achieved lower power consumption of the set by using power MOSFET in output. !Applications CD, MD, DSC, DVC !Features 1) Four channels of power MOS-H bridges are contained. 2) Available for PWM input. 3) Applicable for stepping-motor drive. 4) Separating VM into CH1, CH2 and CH3 / 4. 5) Low on-resistance 1.3 (typ.) 6) Low power consumption. 7) SSOP-B24 package. !Absolute maximum ratings (Ta=25C) Parameter H-bridge power supply voltage Control circuit power supply voltage Driver output current Power dissipation Operating temperature range Storage temperature range Symbol VM VDD IO Pd Topr Tstg Limits 6 6 1000 1025 1 2 Unit V V mA mW C C -40~+85 -55~+150 1 The current is guaranteed 1.0A is case of the current is turned on/off in a duty-ratio of less than 1/10 with a maximum on-time of 5msec. 2 When a 70mmx70mm, 1.6mm thick glass epoxy substrate having a copper foil content of less than 3% is mounted. When the circuit if used at Ta of 25C or more, subtract 8.2mW per degree from the rating. !Recommended operating conditions Parameter H-bridge power supply voltage Control circuit power supply voltage Symbol VM VDD Min. 1.6 2.0 Typ. 5.0 3.0 Max. 5.5 5.5 Unit V V 1/8 BH6573FV Optical disc ICs !Block diagram 24 23 22 21 20 19 18 17 16 15 14 13 PSB1 PSB2 INTERFACE H BRIDGE (Pow MOS) H BRIDGE (Pow MOS) INTERFACE PREDRIVE PREDRIVE PREDRIVE H BRIDGE (Pow MOS) H BRIDGE (Pow MOS) PREDRIVE INTERFACE INTERFACE VDD 1 2 3 4 5 6 7 8 9 10 11 12 !Pin descriptions Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 Pin name GND IN1R IN1F OUT1F VM1 OUT1R OUT2R VM2 OUT2F IN2F IN2R VDD GND CH1 Reverse input CH1 Forward input CH1 Forward output Power supply for CH1 power block CH1 Reverse output CH2 Reverse output Power supply for CH2 power block CH2 Forward output CH2 Forward input CH2 Reverse input Power supply for pre block Functions Pin No. 13 14 15 16 17 18 19 20 21 22 23 24 Pin name GND IN4R IN4F OUT4F OUT4R VM3 OUT3R OUT3F IN3F IN3R PSB2 PSB1 GND CH4 Reverse input CH4 Forward input CH4 Forward output CH4 Reverse output Power supply for CH3, 4 power block CH3 Reverse output CH3 Forward output CH3 Forward input CH3 Reverse input CH3, 4 power save control pin CH1, 2 power save control pin Functions 2/8 BH6573FV Optical disc ICs !Input output circuits VM1 VDD 12 5 32.2k 2, 3, 10, 11, 14, 15, 21, 22 OUT1F 4 6 OUT1R GND 1, 13 GND 1, 13 VM2 VDD 12 8 40k 23, 24 OUT2F 9 7 OUT2R GND 1, 13 GND 1, 13 VM3 18 VM3 18 OUT3F 16 17 OUT3R OUT4F 20 19 OUT4R 1, 13 GND GND 1, 13 3/8 BH6573FV Optical disc ICs !Electrical characteristics (unless otherwise noted, Ta=25C, VM=5V, VDD=3V, fIN=176kHz, RL=8-47uH) Parameter Symbol Min. - - - VDD -0.4 - - -1 - - - - 220 Typ. Max. Unit A A A Drivimg 4channels Conditions Measuring circuit Fig.1 This product is not designed for protection against radioactive rays. 4/8 BH6573FV Optical disc ICs !Measuring circuit H L H L H L H L 8 47H 8 47H H L H L VO3 VO4 A IIN3R A IIN3F V V A IIN4F A IIN4R 24 PSB1 23 PSB2 22 21 20 19 18 17 16 15 14 13 INTERFACE H BRIDGE (Pow MOS) H BRIDGE (Pow MOS) INTERFACE PREDRIVE PREDRIVE PREDRIVE H BRIDGE (Pow MOS) H BRIDGE (Pow MOS) PREDRIVE INTERFACE INTERFACE VDD 1 2 3 4 5 6 7 8 9 10 11 12 A IIN1R IIN1F A V VO2 V VO1 IIN2F A IIN2R A 8 H L H L 47H 8 47H H L H L A IDD VDD A IMST VM Fig.1 !Circuit operation Truth table PSB1 H H H H L PSB mode PSB1 H H L L PSB2 H L H L OUT1, 2 Output is followed by truth table Output is followed by truth table Hi-Z Hi-Z OUT3, 4 Output is followed by truth table Hi-Z Output is followed by truth table Hi-Z PSB2 H H H H L IN14F L L H H X IN14R L H L H X OUT14F Hi-Z L H L Hi-Z OUT14R Hi-Z H L L Hi-Z 5/8 BH6573FV Optical disc ICs !Application example PSB -COM TRACKING FOCUS 3V 5V 24 PSB1 23 PSB2 22 21 20 19 18 17 16 15 14 13 INTERFACE H BRIDGE (Pow MOS) H BRIDGE (Pow MOS) INTERFACE PREDRIVE PREDRIVE PREDRIVE H BRIDGE (Pow MOS) H BRIDGE (Pow MOS) PREDRIVE INTERFACE INTERFACE VDD 1 2 3 4 5 6 7 8 9 10 11 12 M SLED M SPINDLE TRACKING SLED DSP Fig.2 SPINDLE FOCUS 6/8 BH6573FV Optical disc ICs PSB -COM STEPPING MOTER 3V 5V 24 PSB1 23 PSB2 22 21 20 19 18 17 16 15 14 13 INTERFACE H BRIDGE (Pow MOS) H BRIDGE (Pow MOS) INTERFACE PREDRIVE PREDRIVE PREDRIVE H BRIDGE (Pow MOS) H BRIDGE (Pow MOS) PREDRIVE INTERFACE INTERFACE VDD 1 2 3 4 5 6 7 8 9 10 11 12 STEPPING MOTER IN3 IN4 IN1 DSP Fig.3 IN2 7/8 BH6573FV Optical disc ICs !Operation notes 1. Connect a bypass capacitor (0.1F) across the supply voltage lines close to the IC pins. 2. Avoid short circuit between each driver output (4, 6, 7, 9, 16, 17, 19, 20pin) and power supply (5, 8, 12, 18pin), or GND (1, 13pin). And avoid short circuit between output terminals (4-6, 7-9, 16-17, 19-20). !External dimensions (Units : mm) 7.80.2 24 13 7.60.3 5.60.2 1 12 1.150.1 0.1 0.65 0.1 0.220.1 SSOP-B24 0.3Min. 0.150.1 8/8 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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