1/5 rev. a structure : silicon monolithic integrated circuit product name : power driver ic for cd changers device name : bd7962fm features : ? 6-ch driver ic comprising of 3 channels for btl drivers and 3 channels for loading drivers ? 2 channels of loading drivers providing mos outputs with a high d-range (ron=1.0 ? ) ? provided with a loading driver voltage setting terminal ? in btl driver 3 channels, individually installed is a pre-stage op-amp which allows a differential input and an addition input. ? a built-in general operational amplifier 1 channel installed ? mute sw provided ? a built-in thermal shut down circuit installed. ? hsop-m36 package { absolute maximum ratings (ta=25 c) parameter symbol limits unit power supply voltage vcc 15 v power dissipation pd 2.2 *1 w operating temperature range topr -40 to +85 c storage temperature range tstg -55 to +150 c *1 when mounted on the glass/epoxy board with the size: 70 mm 70 mm, the thickness: 1.6 mm, and the rate of copper foil occupancy area: 3% or less. over ta=25 c, derating at the rate of 17.6mw/ c. { recommended operating conditions parameter symbol min typ max unit power supply voltage 1 (ch1, ch2) vcc1 4.5 5.0 vcc3 v power supply voltage2 (ch3, ch4) vcc2 4.5 8.0 14.0 v power supply voltage 3 (ch5, ch6) vcc3 4.5 8.0 14.0 v this product has not been checked for the strategic materials (or service) defined in the foreign exchange and foreign trade control low of japan so that a verification work is required before exporting it. not designed for radiation resistance.
2/5 rev. a { electric characteristics (ta=25 c, vcc1=5v, vcc2=vcc3=8v, bias=1.65v, rl=8 ? , unless otherwise noted.) parameter symbol min. typ. max. unit condition quiescent circuit current (voc1) icc1 - 0.30 0.70 ma no load applied quiescent circuit current (voc2) icc2 11.5 23.0 32.0 no load applied quiescent circuit current (voc3) icc3 1.9 3.8 5.7 no load applied output offset voltage vofs -40 0 +70 mv maximum output amplitude (ch1, ch2) vom1 3.7 4.0 - v maximum output amplitude (ch3) vom2 5.4 6.0 - v closed circuit voltage gain (ch1 - ch3) gvc 10 12 14 db vin=bias 0.5v, when pre-stage op buffered difference between positive and negative voltage gains (ch1 - ch3) ? gvc -20 0 20 db mute on voltage vmon gnd - 0.5 v mute reset voltage vmoff 2.0 - vcc v mute terminal input current imute - 80 125 a vmute=5vvbias=2.5v bias terminal inflow current ibias - 75 120 a vbias=2.5v output offset voltage vofsl -35 0 +35 < v in brake mode input terminal threshold voltage h vh 2.0 - vcc v input terminal threshold voltage l vl gnd - 0.5 v maximum output amplitude (ch4) voml 5.4 6.0 - v rl=8 ? output saturation voltage h (ch5, ch6) volh - 0.38 0.70 v lo=500ma output saturation voltage l (ch5, ch6) voll - 0.12 0.25 v lo=500ma voltage gain (loading) gvld 4.0 6.0 8.0 db ldcont=5v difference between positive and negative voltage gains (loading) ? gvld -2.0 0 2.0 db input terminal inflow current inl - 180 270 a ldin=5v ldcont terminal outflow current (ldcont 1) ildc1 - - 0.5 ma ldcont=5v ldcont terminal outflow current (ldcont 2,3) ildc2 - - 300 na ldcont=5v input offset voltage vopofs -5 0 +5 mv input bias current iopb - - 300 na common mode input voltage range vopicm 0.3 - vcc-1.2 v maximum output source current isource 500 800 - a maximum output sink current isnk 2 - - ma slew rate sr - 2 - v/ s { outline dimensions (unit: mm) product number (max 18.75 include burr )
3/5 rev. a { application circuit diagram ' % 3 7 " ??3?? ??3?? ??3?? ??3?? $ p o u s p m m p h j d ' 3 $ ) l l l $ ) $ ) $ ) $ ) l l l * / - % $ 0 / 5 * / l - % $ 0 / 5 * / $ ) 7 d d # * " 4 l l l l l l 7 d d # * " 4 . 6 5 & 0 1 * / 7 d d 7 d d 7 d d l l . 6 5 & 5 4 % - % $ 0 / 5 - % $ 0 / 5 7 d d $ p o u s p m m p h j d 3 ' $ p o u s p m m p h j d 3 ' l 3 7 ' % 3 7 ' % " " - % $ 0 / 5 - % $ 0 / 5 " $ )
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l l l l l l l l l l l l l l 3 # % t.s.d: (thermal shutdown) resistance unit : [ ? ] { pin description no. pin name description no. pin name description 1 gnd2 gnd (loading driver unit) 19 out3+ btl driver (ch3) output + 2 out5- loading driver (ch5) output - 20 out3- btl driver (ch3) output - 3 out5+ loading driver (ch5) output + 21 out4+ loading driver (ch4) output + 4 in5fwd loading driver (ch5) fwd inp ut 22 out4- loading driver (ch4) output - 5 in5rev loading driver (ch5) rev input 23 vcc2 power supply voltage (ch3, ch4) 6 in6rev loading driver (ch6) rev input 24 ldcont 1 loading driver (ch4) voltage setting terminal 7 in6fwd loading driver (ch6) fwd inp ut 25 gnd1 gnd (btl driver part) 8 ldcont 2 loading driver (ch5) voltage setting terminal 26 opout op-amp output 9 ldcont 3 loading driver (ch6) voltage setting terminal 27 opin- op-amp negative input 10 opin1- ch1 pre-stage op-amp negative input 28 vcc3 power supply voltage (ch5, ch6 parts) 11 op1out ch1 pre-stage op-amp output 29 mute btl driver mute terminal 12 opin2- ch2 pre-stage op-amp negative input 30 in4rev loading driver (ch4) rev input 13 op2out ch2 pre-stage op-amp output 31 in4fwd loading driver (ch4) fwd input 14 vcc1 power supply voltage (ch1, ch2) 32 opin3- ch3 pre-stage op-amp negative input 15 out2- btl driver (ch2) output - 33 op3out ch3 pre-stage op-amp output 16 out2+ btl driver (ch2) output + 34 out6+ loading driver (ch6) output + 17 out1- btl driver (ch1) output - 35 out6- loading driver (ch6) output - 18 out1+ btl driver (ch1) output + 36 bias bias terminal * the positive or negative polarity of the btl driver output corres ponds to the output polarity of the pre-stage op-amp. when the pre-stage op-amp output is h, the positive output will be h while the negative one l.
4/5 rev. a { cautions on use (1) when the mute terminal (pin 29) is set to open or its voltage drops to 0.5v (t yp.) or less, the output current of the btl driver part (ch1 to ch3) can be muted. under conditions of normal use, it should be pulled up to 2.0v or above. (2) on the bias terminal (pin 36), the applied voltage of 0.7v (typ.) or less will activate the mute function on the btl driver part (ch1-ch3). under conditions of normal use, it should be kept 1.1v or above. (3) thermal shutdown (tsd) will activate the mute functi on on all drivers, while mute on or bias terminal voltage drop will on the btl drivers except loading drivers. the pre-stage op-amps cannot be muted in any cases described above. while muting, the output terminals of ch1 and ch2 show the internal bias voltage: vcc1/2v and the output terminal of ch3 show the in ternal bias voltage: (vcc2-0.7)/2v. (4) the loading driver functions followi ng to the logic in the table below: input output fwd rev out+ out- function l l hi-z hi-z high impedance l h l h reverse mode h l h l forward mode h h l l brake mode although the output voltage can be changed by the input voltage through the ldcont terminal (gain 6db typ.), it never exceeds the maximum output vo ltage restricted by the power supply voltage even if applying a voltage much larger than the normal value. if the ldcont terminals (pin 8, pin 9, pin 24) are se t to 0.7v or less, the out puts of the loading driver corresponding to the ldcont terminal will be in the high-impedance mode. ch4 with the impedance of 40k ? , however, shows the internal bias voltage: (vcc2-0.7)/2v. (5) on vcc2 (pin 23) must be applied the same voltage as that of vcc3 (pin 28) and vcc1 (pin 14) or above. (6) the radiating fin must be c onnected to the external gnd. (7) a shot key diode must be inserted between out4- (pin 22) and vcc2 (pin 23) (see the application circuit diagram) to prevent the cu rrent induced by a counter electr omotive force of the motor from flowing into the ic. (8) short-circuits between output pi n-vcc, output pin-gnd, or outpu t terminals (load short) must be avoided. it may damage ics or produce smoke. (9) about absolute maximum ratings exceeding the absolute maximum ratings, such as the applied voltage or the operating temperature range, may cause permanent device damage. as these cases cannot be limited to the broken short mode or the open mode, if a special mode where the absolute maximum ratings may be exceeded is assumed, it is recommended to take mechanical safety measures such as attaching fuses. (10) about power supply lines as a measure against the back current regenerated by a counter electromotive force of the motor, a capacitor to be used as a regenerated-current path can be installed between the power supply and gnd and its capacitance value should be determined after careful check that any problems, for example, a leak capacitance of the electrolytic capacitor at low tem perature, are not found in various characteristics. (11) about gnd potential the electric potential of the gnd terminal must be k ept lowest in the circuitry at any operation states. (12) about thermal design with consideration of the power dissipation (pd) under conditions of actual use, a thermal design provided with an enough margin should be done. (13) about operations in a strong electric field when used in a strong electric field, note that a malfunction may occur. (14) aso when using this ic, the output tr. must be set not to exceed the values s pecified in the absolute maximum ratings and aso.
5/5 rev. a (15) thermal shutdown circuit this ic incorporates a thermal shutdown circuit (tsd circuit). when the chip temperature reaches the value shown below, the coil output to the motor will be set to open. the thermal shutdown circuit is designed only to s hut off the ic from a thermal runaway and not intended to protect or guarantee the entire ic functions. therefore, users cannot assume t hat the tsd circuit once activat ed can be used cont inuously in the subsequent operations. tsd on temperature [ c] (typ.) hysteresis temperature [ c] (typ.) 175 25 (16) about earth wiring patterns when a small signal gnd and a large current gnd are provided, it is recommended that the large current gnd pattern and the small signal gnd patte rn should be separated and grounded at a single point of the reference point of the set in order to prevent the voltage of the small signal gnd from being affected by a voltage change caused by the resistanc e of the pattern wiring and the large current. make sure that the gnd wiring patterns of the external components will not change, too. (17) this ic is a monolithic ic which has a p + isolations and p substrate to isolate elements each other. this p layer and an n layer in each element form a pn junction to construct vari ous parasitic elements. due to the ic structure, the parasitic elements are inevitably created by t he potential relationship. activation of the parasitic elements can cause in terference between circuits and may result in a malfunction or, consequently, a fata l damage. therefore, make sure that the ic must not be used under conditions that may activate the parasitic el ements, for example, applying the lower voltage than the ground level (gnd, p substrat e) to the input terminals. in addition, do not applying the voltage to input term inals without applying the power supply voltage to the ic. also while applying the power supply voltage, the voltage of each input terminal must not be over the power supply voltage, or within the guar anteed values in the elec tric characteristics.
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. appendix1-rev2.0 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 the americas / eupope / asia / japan contact us : webmaster@ rohm.co. jp www.rohm.com copyright ? 2007 rohm co.,ltd. the products listed in this document are designed to be used with ordinary electronic equipment or de vices (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. 21, saiin mizosaki- cho, ukyo-ku, kyoto 615-8585, japan tel : +81-75-311-2121 fax : +81-75-315-0172 appendix
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