View BD7959EFV_3599578.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

1/18 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. system motor driver ics for cd / dvd / blu-ray drive and recorder system motor driver ic for half height drive (3 sensors) BD7959EFV description BD7959EFV are ics, developed for the spindle motor, actuator co il, tilt coil, stepping motor, sa (spherical aberration) motor and the loading motor drive of the blu-ray drive. the spindl e, stepping and sa motor driver use power mosfet to reduce power consumption and the actuator, t ilt, and loading driver use a linear btl drive system to reduce noise. features 1) correspondence to the blu-ray drive control with built-in 9ch. 2) the spindle motor driver achieves low noise by rohm's own energizing method. 3) highly effective spindle, stepping and sa driver is ac hieved by pwm control driver. and the output current detection resistance of stepping and sa driver is unnece ssary by built-in internal detection circuit. 4) the actuator , tilt and loading driver achi eve low noise by using linear btl drive system. 5) on/off of loading and other chan nels, brake mode of spindle driver and standby mode are selectable by the two control terminals. 6) built-in thermal-shut down circuit. 7) built-in triangular wave generator. 8) improved heat radiation ef ficiency utilizing htssop package. applications optical disk equipment, such as blu-ray recorders absolute maximum ratings parameter symbol ratings unit power mos power supply voltage spvm,sl/savm 15 #1 v preblock/btl power block power supply voltage vcc,avm 15 v pwm control block power supply voltage dvcc 7 v pick-up pull charge capacitor terminal voltage chg_c 15 v power dissipation pd 2.0 #2 w operating temperature range topr -20 ~ 75 storage temperature tstg -55 ~ 150 joint part temperature tjmax 150 #1 power mos output terminals (35~42pin, 45 ~ 47pin) are contained. #2 pcb mounting (70mmx70mmx1.6mm, occupied copper foil is less than 3%, glass epoxy standard board). reduce by 16mw/ over 25 no.10012eat02
technical note 2/18 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. BD7959EFV
technical note 3/18 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. BD7959EFV
technical note 4/18 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. BD7959EFV
technical note 5/18 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. BD7959EFV
technical note 6/18 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. BD7959EFV
technical note 7/18 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. BD7959EFV btl driver input(fc,tk,tl,ld) driver logic control input (ctl1,2) 200
technical note 8/18 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. BD7959EFV
technical note 9/18 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. BD7959EFV
technical note 10/18 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. BD7959EFV 3. pick-up lens pull function pick ctl function l on
technical note 11/18 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. BD7959EFV 8. thermal-shut down thermal-shutdown circuit (over-temperature protection circuit) is built in to prevent the ic from thermal breakdown. please use the ic according to the thermal loss allowed in the package. in case the ic is left running over the allowed loss, the junction temperature rises, and the thermal-shutdown circuit works at a junction temperature of 175
technical note 12/18 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. BD7959EFV
technical note 13/18 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. BD7959EFV 12. wiring for sprnf considering the wiring resistance, connect each detecting resistor as close as possible to the current detection terminals for the spindle drive sprnf. v cc sprnf 12v + spvm 52 7 close to ic this range of wiring is cons idered as detection resistor. please wire as wide and short as possible. 13. earth wiring pattern use separate ground lines for control signals and high current power driver outputs. because these high current output that flow to the wire impedance change the gnd voltage for c ontrol signal. therefore, each ground terminal of ic must be connected at the one point on the set circuit board. as for gnd of external parts, it is similar to the above-mentioned. 14. each input terminal this ic is a monolithic ic, and has p + isolation and p substrate for the element separation. therefore, a parasitic pn junction is firmed in this p-layer and n-layer of each element. fo r instance, the resistor or the transistor is connected to th e terminal as shown in the figure below. when the gnd voltage potential is greater than the voltage potential at terminals a or b, the pn junction operates as a parasitic diode. in addition, the parasitic npn transistor is formed in said parasitic diode and the n layer of surrounding elements close to said parasitic diode. these parasitic elements are formed in the ic because of the voltage relation. the parasitic element operating causes the wrong operation and destruction. therefore, please be careful so as not to operate the parasitic elements by impressing to input terminals lower voltage than gnd(p substrate). please do not apply the voltage to the input terminal when the power-supply voltage is not impressed. moreover, please impress each input terminal lower than the power-supply voltage or equal to the specified range in the guaranteed voltage when the power-supply voltage is impressing. terminal-a parasitic element gnd p + p terminal-a terminal-b gnd p p-substrate cb gnd e e c b gnd surrounding elements resistor transistor(npn) p + p + p + p-substrate parasitic element parasitic element parasitic element terminal-b simplified structure of ic 15. inspection by the set circuit board the stress might hang to ic by connecting the capacitor to the terminal with low impedance. then, please discharge electricity in each and all process. moreover, in the inspec tion process, please turn off the power before mounting the ic, and turn on after mounting the ic. in addition, please take in to consideration the countermeasures for electrostatic damage, such as giving the earth in assembly process, transportation or preservation. 16. belly metal belly metal pattern is attached to the gnd on the inside of the package. make sure to the external gnd.
technical note 14/18 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. BD7959EFV
technical note 15/18 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. BD7959EFV
technical note 16/18 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. BD7959EFV
technical note 17/18 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. BD7959EFV -6 -4 -2 0 2 4 6 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 input voltage [v] fco(+)- fco(-) [v] -6 -4 -2 0 2 4 6 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 input voltage [v] t k o(+)-t ko(- ) [v] -6 -4 -2 0 2 4 6 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 input voltage [v] t lo(+ )-t lo(-) [v] -12 -8 -4 0 4 8 12 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 input voltage [v] ldo(+)-ldo(-) [v] 0 200 400 600 800 1000 1200 1400 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 input voltage [v] output current [ma] 0 50 100 150 200 250 300 350 -2.0 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 2.0 input voltage [v] output current [ma] 0 80 160 240 320 400 480 -2.0 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 2.0 input voltage [v] vcc-bthc [mv]
technical note 18/18 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. BD7959EFV (unit : mm) htssop-b54 0.850.05 0.080.05 0.65 1.0max 0.22 +0.05 - 0.04 0.08 m s 0.08 54 28 27 1 18.50.1 (5.0) (6.0) 9.50.2 7.50.1 0.8 (max 18.85 include burr) 1pin mark 0.50.15 1.00.2 0.17 +0.05 - 0.03 s 4 + 6 ? 4 ? order quantity needs to be multiple of the minimum quantity. embossed carrier tape (with dry pack) tape quantity direction of feed the direction is the 1pin of product is at the upper left when you hold reel on the left hand and you pull out the tape on the right hand 1500pcs e2 () direction of feed reel 1pin
r1010 a www.rohm.com ? 2010 rohm co., ltd. all rights reserved. notice rohm customer support system http://www.rohm.com/contact/ thank you for your accessing to rohm product informations. more detail product informations and catalogs are available, please contact us. notes no copying or reproduction of this document, in part or in whole, is permitted without the consent of rohm co.,ltd. the content specied herein is subject to change for improvement without notice. the content specied herein is for the purpose of introducing rohm's products (hereinafter "products"). if you wish to use any such product, please be sure to refer to the specications, which can be obtained from rohm upon request. examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the products. the peripheral conditions must be taken into account when designing circuits for mass production. great care was taken in ensuring the accuracy of the information specied in this document. however, should you incur any damage arising from any inaccuracy or misprint of such information, rohm shall bear no responsibility for such damage. the technical information specied herein is intended only to show the typical functions of and examples of application circuits for the products. rohm does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by rohm and other parties. rohm shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. the products specied in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, ofce-automation equipment, commu- nication devices, electronic appliances and amusement devices). the products specied in this document are not designed to be radiation tolerant. while rohm always makes efforts to enhance the quality and reliability of its products, a product may fail or malfunction for a variety of reasons. please be sure to implement in your equipment using the products safety measures to guard against the possibility of physical injury, re or any other damage caused in the event of the failure of any product, such as derating, redunda ncy, re control and fail-safe designs. rohm shall bear no responsibility whatsoever for your use of any product outside of the prescribed scope or not in accordance with the instruction manual. the products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospac e machinery, nuclear-reactor controller, fuel- controller or other safety device). rohm shall bear no responsibility in any way for use of any of the products for the above special purposes. if a product is intended to be used for any such special purpose, please contact a rohm sales representative before purchasing. if you intend to export or ship overseas any product or technology specied herein that may be controlled under the foreign exchange and the foreign trade law, you will be required to obtain a license or permit under the law.

▲Up To Search▲

Price & Availability of BD7959EFV

	To Download BD7959EFV Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .