1/5 rev. a structure : silicon monolithic integrated circuit product name : power driver for compact disc players device name : BA5826FP features : ? 4-ch btl driver ? use of an hsop28 power package c an achieve downsizing of the set. ? gain can be controlled by atta ching an external resistance. ? a built-in thermal shut down circuit installed. ? a built-in 3.3v regulator installed. (external pnp tr must be installed.) ? a built-in general operational amplifier installed. ? a built-in 2.7v reset circuit installed. ? using an external capacitor, the reset delay time can be changed. { absolute maximum ratings (ta=25 c)] parameter symbol limits unit power supply voltage vcc 13.5 v power dissipation pd 1.7 *1 w operating temperature range topr -35 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 13.6mw/ c. { operating conditions parameter symbol limits unit power supply voltage vcc 4.5 to 9 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, vcc=8v, vbias=1.65v, r l =8 ? , unless otherwise noted.) parameter symbol min. typ. max unit condition circuit current at no signal icc 6.0 10.0 14.0 ma no load applied output offset voltage voo1 -50 - 50 mv maximum output amplitude vom1 4.35 5.0 - v vbias=4v closed circuit voltage gain gvc1 6.0 8.0 10.0 db output offset voltage voo2 -50 - 50 mv maximum output amplitude vom2 4.3 4.9 - v vbias=4v closed circuit voltage gain gvc2 7.0 8.0 9.0 db mute off voltage vmtoff 2.0 - - v mute on voltage vmton - - 0.5 v bias drop mute threshold voltage vbthr - 0.7 1.2 v <3.3v regulator > output voltage vreg 3.13 3.3 3.47 v il=100ma output load regulation ? vrl -20 0 10 mv il=100 to 200ma power supply voltage regulation ? vvcc -10 0 35 mv (vcc=6 to 9v) il=100ma offset voltage vofop -6 - 6 mv input bias current ibias - - 300 na high-level output voltage vohop 7.5 - - v vbias=4v low-level output voltage volop - - 0.3 v vbias=4v output driving current source isou 300 500 - a vbias=4v output driving current sink isin 1 - - ma vbias=4v reset on threshold voltage vthr 2.56 2.7 2.84 v when vreg drops reset on output voltage vron - - 0.5 v connected to 3.3v with the resistance of 10k ? applied. irest 16.6 23.7 30.8 a reset threshold voltage h vresth 7.7 - - v vrest=1.5v reset threshold voltage l vrestl - - 0.4 v vrest=1v { outline dimensions, symbols (unit:mm) product number (max 18.85 include burr )
3/5 rev. a { application circuit diagram ch1: spindle ch2: sled ch3: tracking ch4: focus t. s. d.: thermal shutdown resistance unit: [ ? ] { pin numbers, pin names no. pin name description no. pin name description 1 vo1(-) driver ch1 ne gative output 15 opin operational amplifier inverted input 2 vo1(+) driver ch1 positive output 16 reset reset terminal 3 in1 ch1 input terminal 17 vo3 (-) driver ch3 ne gative output 4 reset reset output 18 vo3(+) driver ch3 positive output 5 regb regulator external tr base connection terminal 19 in3 ch3 input terminal 6 regout regulator output 20 in3? ch3 input terminal for gain control 7 mute driver mute control terminal 21 vcc power supply input 8 gnd pregnd, reggnd 22 vcc power supply input 9 in2? ch2 input terminal for gain control 23 bias bias input 10 in2 ch2 input terminal 24 in4? ch4 input terminal for gain control 11 vo2(+) driver ch2 positive output 25 in4 ch4 input terminal 12 vo2(-) driver ch2 negativ e output 26 vo4(+) driv er ch4 positive output 13 gnd ch2,3 powgnd 27 vo4(-) dr iver ch4 negat ive output 14 opout operational amplifier output 28 gnd ch1,4 powgnd note: the positive or negative polarity of driv er outputs is determined by the input polarity. when the signal h is applied to the input pin, the negative output pin outputs l and the positive output pin outputs h. . . ' 0 $ 6 4 5 3 " $ , * / ( # * " 4 4 - & % 4 1 * / % - & 4 - & % . 0 5 0 3 4 1 * / % - & . 0 5 0 3 4 & 3 7 0 1 3 & " . 1 7 $ $ 7 ' 0 $ 6 4 $ 0 * - 5 3 " $ , * / ( $ 0 * - $ ) $ ) - & 7 & - 4 ) * ' 5 - & 7 & - 4 ) * ' 5 $ ) $ ) l l ( / % - & 7 & - 4 ) * ' 5 - & 7 & - 4 ) * ' 5 l ( / % l l ( / % l 7 $ $ 7 $ $ l 5 4 % 3 & ( 6 - " 5 0 3
# * " 4 e s p q . 6 5 & 3 & 4 & 5 7
4/5 rev. a cautions on use (1) relationship between the mute function and the reset output function driver mute operation reset output regulator voltage drop ?h? ?l' bias voltage drop ?h? ?l? thermal shutdown ?h? ?l? mute (pin 7) on in all cases constant [regulator voltage drop] when the regulator voltage drops to 2.7v (typ.) or less, the reset out put will become ?l? while the mute function will turn on and, when the voltage recovers to 2.9v (typ.) or above, the reset output will become ?h? while the mute function will turn off. [bias drop] when the bias terminal (pin 23) vo ltage has dropped to 0.7v (typ.) or less, the mute function will turn on while the reset output will become ?l?. under condi tions of normal use, it should be set to 1.2v or above. [thermal shutdown] when the chip temperature has reached to 175 c (typ.) or above, the mute function will turn on while the reset output will become ?l?. ten the chip temperature has dropped to 150 c (typ.) or less, the mute function will turn off while the reset output will become ?h?. [mute] when the mute terminal (pin 7) voltage has set to open or dropped to 0.5v (typ.) or less, the mute function will turn on while t he reset output will not change. (2) about reset terminal inserting a capacitor between the reset terminal (pin 16) and gnd can set the delay time for the reset output. the delay time t [sec] can be expressed by the fo llowing equation, where c[f] is a capacitance of the capacitor to be connected; t=cv/i when v=1.14[v], i=23.7[ a ] (typ.) and the capacitor with the capacitance of 4.7 f is connected, the delay time will become approximately 220msec. (3) thermal shutdown (tsd), mute on, bias terminal voltage drop, or regulator voltage drop will activate the mute function, where only the driver part can be muted. while muting, the voltage at the output terminal will equal to the internal bias voltage (approximately (vcc-vf) / 2). (4) the capacitor installed between the regulator output (pin 6) and gnd also serves as an anti-oscillation capacitor and therefore, it is required to have high performance in the temper ature characteristics. (5) while the regulator is not in us e, the regulator output terminal (pin 6) must be shorted to vcc and the regulator external tr base connecti on terminal (pin 5) must be open. (6) the radiating fin must be c onnected to the external gnd. (7) short-circuits between output pi n-vcc, output pin-gnd, or outpu t terminals (load short) must be avoided. make sure that the ics are installed on the board in proper directions. mounting the ics in improper directio ns may damage them or produce smoke. (8) 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. (9) 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. (10) about gnd potential the electric potential of the gnd terminal must be k ept lowest in the circuitry at any operation states. (11) about thermal design with consideration of the power dissipation (pd) under conditions of actual use, a thermal design
5/5 rev. a provided with an enough margin should be done. (12) about operations in a strong electric field when used in a strong electric field, note that a malfunction may occur. (13) 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. (14) 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 (15) 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 sm all 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. (16) 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 fatal 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. note that, while not applying the power supply voltage to the ic, any voltage must not be applied to the input terminals. in addition, do not applying the voltage to input te rminals without applying the power supply voltage to the ic. also while applying the power supply voltage, each input terminal must be the power supply voltage or less; 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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