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TA8264AHQ 2006-04-28 1 toshiba bipolar linear integrated circuit silicon monolithic TA8264AHQ max power 41 w btl 4 ch audio power ic the TA8264AHQ is 4 ch btl audio power amplifier for car audio application. this ic can generate more high power: p out max = 41 w as it is included the pure complementary pnp and npn transistor output stage. it is designed low distortion ratio for 4 ch btl audio power amplifier, built-in stand-by function, muting function, and diagnosis circuit which can detect output to v cc /gnd short and over voltage input mode. additionally, the aux amplifier and various kind of protector for car audio use are built-in. features ? high power : p out max (1) = 41 w (typ.) (v cc = 14.4 v, f = 1 khz, jeita max, r l = 4 ? ) : p out max (2) = 37 w (typ.) (v cc = 13.7 v, f = 1 khz, jeita max, r l = 4 ? ) : p out (1) = 24 w (typ.) (v cc = 14.4 v, f = 1 khz, thd = 10%, r l = 4 ? ) : p out (2) = 21 w (typ.) (v cc = 13.2 v, f = 1 khz, thd = 10%, r l = 4 ? ) ? built-in diagnosis circuit (pin 25) ? low distortion ratio: thd = 0.02% (typ.) (v cc = 13.2 v, f = 1 khz, p out = 5 w, r l = 4 ? ) ? low noise: v no = 0.18 mv rms (typ.) ? (v cc = 13.2 v, r g = 0 ? , g v = 34db, bw = 20 hz~20 khz) ? built-in stand-by switch function (pin 4) ? built-in muting function (pin 22) ? built-in aux amplifier from single input to 2 channels output (pin 16) ? built-in various protection circuit : thermal shut down, over voltage, out to gnd, out to v cc , out to out short, speaker burned ? operating supply voltage: v cc (opr) = 9~18 v note 1: install the product correctly. otherwise, it may result in break down, damage and/or degradation to the product or equipment. note 2: these protection functions are intended to avoid some output short circuits or other abnormal conditions temporarily. these protect functions do not warrant to prevent the ic from being damaged. - in case of the product would be operated with exceeded guaranteed operating ranges, these protection features may not operate and some output short circuits may result in the ic being damaged. weight: 7.7 g (typ.)
TA8264AHQ 2006-04-28 2 block diagram note3: some of the functional blocks, circuits, or constants in the block diagram may be omitted or simplified for explanatory purpose. r l r l r l 11 9 8 7 5 2 3 17 18 19 21 24 23 12 15 14 1 20 6 r l in1 in2 in3 aux in in4 13 16 c 1 c 1 c 1 c 1 pre-gnd 10 25 4 22 out1 ( + ) pw-gnd1 out1 ( ? ) out2 ( + ) pw-gnd2 out2 ( ? ) out3 ( + ) pw-gnd3 out3 ( ? ) out4 ( + ) pw-gnd4 out4 ( ? ) tab v cc1 v cc2 c 3 r 1 c 4 c 2 : pre-gnd : pw-gnd stby diagnosis out rip mute c 5 c 6
TA8264AHQ 2006-04-28 3 caution and application method (description is made only on the single channel.) 1. voltage gain adjustment this ic has no nf (negative feedback) terminals. therefore, the voltage gain can?t adjusted, but it makes the device a space and total costs saver. the voltage gain of amp.1 : g v1 = 8db the voltage gain of amp.2a, b : g v2 = 20db the voltage gain of blt connection : g v (btl) = 6db therefore, the total voltage gain is decided by expression below. g v = g v1 + g v2 + g v (btl) = 8 + 20 + 6 = 34db 2. stand-by sw function (pin 4) by means of controlling pin 4 (stand-by terminal) to high and low, the power supply can be set to on and off. the threshold voltage of pin 4 is set at about 3v be (typ.), and the power supply current is about 2 a (typ.) at the stand-by state. control voltage of pin 4: v sb stand-by power v sb (v) on off 0~1.5 off on 3~v cc adjustage of stand-by sw (1) since v cc can directly be controlled to on or off by the microcomputer, the switching relay can be omitted. (2) since the control current is microscopic, the switching relay of small current capacity is satisfactory for switching amp. 1 input amp. 2a amp. 2b figure 1 block diagram figure 2 with pin 4 set to high, power is turned on on 4 off 10 k ? to bias cutting circuit 2v be v cc power
TA8264AHQ 2006-04-28 4 3. muting function (pin 22) by means of controlling pin 22 less than 0.5 v, it can make the audio muting condition. the muting time constant is decided by r 1 and c 4 and these parts is related the pop noise at power on/off. the series resistance; r1 must be set up less than 10 k ? to get enough muting attenuation. the muting function have to be controlled by a transistor, fet and micro-controller port which has i mute > 250 a ability. pin 22 terminal voltage has the temperature characteristics of 4.6 v (low temperature) to 3.2 v (high temperature). therefore, it is need to design with attention as using the micro-controller of which operating voltage is less than 5 v. terminal 22 may not be pulled up and shall be controlled by open/low. when it is obliged to do, it must be pulled up via diode, because it has to defend flowing reverse current to internal circuit of pin 22. v cc small current capacity switch battery stand-by v cc directly from microcomputer battery stand-by ? stand-by switch method ? figure 3 ? conventional method ? v cc large current capacity switch battery v cc from microcomputer battery relay figure 5 mute attenuation ? v mute (v) point a voltage: v mute (v) att ? v mute mute attenuation att (db) 10 k ? 5 k ? v cc = 13.2 v p o = 10 w pl = 4 ? f = 1 khz ? 100 0 0.4 0.8 1 1.2 1.6 2 2.4 2.8 3 ? 80 ? 60 ? 40 ? 20 0 20 figure 4 muting function r 1 i (100 a) 22 i mute i mute (off) a v mute c 4 r 1 i (100 a) 22 i mute i mute (off) v mute c 4
TA8264AHQ 2006-04-28 5 4. aux input (pin 16) the pin 16 is for input terminal of aux amplifier. the total gain is 0db by using of aux amplifier. therefore, the -com can directly drive the aux amplifier. beep sound or voice synthesizer signal can be input to pin 16 directly. when aux function is not used, this pin must be connected to pre-gnd (pin 13) via a capacitor. 5. diagnosis output (pin 25) this diagnosis output terminal of pin 25 has open collector output structure on chip as shown in figure 7. in case diagnosis circuit that detect unusual case is operated, npn transistor (q1) is turned on. it is possible to protect all the system of apparatus as well as power ic protection. in case of being unused this function, use this ic as open-connection on pin 25. 5.1 in case of shorting output to v cc /gnd or over voltage power supplied npn transistor (q1) is turned on. threshold of over voltage protection: v cc = 22 v (typ.) 5.2 in case of shorting output to output npn transistor (q1) is turned on and off in response to the input signal voltage. 25 5 v led/lcd alarm regulator off (flashing) (announcement from a speaker.) (relay off) -com memory (count and record) figure 8 application 1 figure 6 aux input 20db amp. in out ( + ) out ( ? ) 16 aux-in ? 20db aux amp -com figure 7 self diagnosis output pin 25: open collector output (active low) output short protector over voltage protector 25 q1 5 v q1 is turned on gnd 5 v t
TA8264AHQ 2006-04-28 6 6. prevention of speaker burning accident (in case of rare short circuit of speaker) when the direct current resistance between out + and out ? terminal becomes 1 ? or less and output current over 4 a flows, this ic makes a protection circuit operate and suppresses the current into a speaker. this system makes the burning accident of the speaker prevent as below mechanism. < the guess mechanism of a burning accident of the speaker > abnormal output offset voltage (voltage between out + and out ? ) over 4 v is made by the external circuit failure.(note 4) the speaker impedance becomes 1 ? or less as it is in a rare short circuit condition. the current more than 4 a flows into the speaker and the speaker is burned. note 4: it is appeared by biased input dc voltage (for example, large leakage of the input capacitor, short-circuit between copper patterns of pcb.) current into a speaker speaker impedance less than 4 ? figure 9 about 1 ? 4 ? operating point of protector
TA8264AHQ 2006-04-28 7 6.1 applications when output terminals short-circuit to v cc or gnd, the voltage of 25pin is fixed to ?l?. and when shorting out + to out ? , ?l? and ?h? are switched according to an input signal. therefore, it is possible to judge how the power ic condition is if a micro-controller detects the 25pin voltage that is smoothed out with lpf. it is recommend that the threshold voltage (vth) is set up as higher as possible because output level of lpf is changed according to an input signal. (for example, vth is set up to 4 v if 25pin is pulled up to 5 v line.) output voltage of l.p.f. output power 5 v figure 10 operating point of protector
TA8264AHQ 2006-04-28 8 absolute maximum ratings (ta = 25c) characteristics symbol rating unit peak supply voltage (0.2 s) v cc (surge) 50 v dc supply voltage v cc (dc) 25 v operation supply voltage v cc (opr) 18 v output current (peak) i o (peak) 9 a power dissipation p d (note 5) 125 w operation temperature t opr ? 40~85 c storage temperature t stg ? 55~150 c note 5: package thermal resistance j-t = 1c/w (typ.) (ta = 25c, with infinite heat sink) the absolute maximum ratings of a semiconductor device are a set of specified parameter values, which must not be exceeded during operation, even for an instant. if any of these rating would be exceeded during operation, the device electrical characteristics may be irreparably altered and the reliability and lifetime of the device can no longer be guaranteed. moreover, these operations with exceeded ratings may cause break down, damage and/or degradation to any other equipment. applications using the device should be designed such that each absolute maximum rating will never be exceeded in any operating conditions. before using, creating and/or producing designs, refer to and comply with the precautions and conditions set forth in this documents. electrical characteristics (unless otherwise specified v cc = 13.2 v, f = 1 khz, r l = 4 ? , ta = 25c) characteristics symbol test circuit test condition min typ. max unit quiescent current i ccq ? v in = 0 ? 200 400 ma p out max (1) ? v cc = 14.4 v, max power ? 41 ? p out max (2) ? v cc = 13.7 v, max power ? 37 ? p out (1) ? v cc = 14.4 v, thd = 10% ? 24 ? output power p out (2) ? thd = 10% 19 21 ? w total harmonic distortion thd ? p out = 5 w ? 0.02 0.2 % voltage gain g v ? v out = 0.775 vrms (0dbm) 32 34 36 voltage gain ratio ? g v ? v out = 0.775 vrms (0dbm) ? 1.0 0 1.0 db v no (1) ? rg = 0 ? , din45405 ? 0.20 ? output noise voltage v no (2) ? rg = 0 ? , bw = 20 hz~20 khz ? 0.18 0.42 mvrms ripple rejection ratio r.r. ? f rip = 100 hz, rg = 620 ? v rip = 0.775 vrms (0dbm) 40 50 ? db cross talk c.t. ? rg = 620 ? v out = 0.775 vrms (0dbm) ? 60 ? db output offset voltage v offset ? ? ? 150 0 + 150 mv input resistance r in ? ? ? 30 ? k ? stand-by current i sb ? stand-by condition ? 2 10 a v sb h ? power: on 3.0 ? v cc stand-by control voltage v sb l ? power: off 0 ? 1.5 v v m h ? mute: off open ? mute control voltage (note 6) v m l ? mute: on, r 1 = 10 k ? 0 ? 0.5 v mute attenuation att m ? mute: on, v out = 7.75 vrms (20dbm) at mute: off. 80 90 ? db note 6: muting function have to be controlled by open and low logic, which logic is a transistor, fet and -com port of i mute > 250 a ability.this means than the mute control terminal : pin 22 must not be pulled-up.
TA8264AHQ 2006-04-28 9 test circuit components in the test circuits are only used to obtain and confirm the device characteristics. these components and circuits do not warrant to prevent the application equipment from malfunction or failure. r l r l r l 11 9 8 7 5 2 3 17 18 19 21 24 23 12 15 14 1 20 6 r l in1 in2 in3 in4 13 c 1 c 1 c 1 c 1 pre-gnd 10 25 4 22 out1 ( + ) pw-gnd1 out1 ( ? ) out2 ( + ) pw-gnd2 out2 ( ? ) out3 ( + ) pw-gnd3 out3 ( ? ) out4 ( + ) pw-gnd4 out4 ( ? ) tab v cc1 v cc2 c 3 r 1 c 4 1 f c 2 : pre-gnd : pw-gnd stby diagnosis out rip mute 3900 f 0.22 f 0.22 f 0.22 f 10 f 10 k ? c 5 0.1 f 0.22 f aux in 16 0.22 f c 6
TA8264AHQ 2006-04-28 10 quiescent current i ccq (ma) output power p out (w) t.h.d ? p out total harmonic distortion t.h.d (%) power supply voltage v cc (v) i ccq ? v cc frequency f (hz) t.h.d ? f total harmonic distortion t.h.d (%) output power p out (w) t.h.d ? p out total harmonic distortion t.h.d (%) 10 0 30 0 400 20 100 200 300 r l = v in = 0 100 10 100 k 0.001 1 1 k 0.01 0.1 10 k out2, 3 v cc = 13.2 v r l = 4 ? p out = 5 w out3 out4 0.1 100 0.01 1 0.1 f = 1 khz r l = 4 ? 1 10 10 100 13.2 v 16.0 v 9.0 v 0.1 100 0.01 1 0.1 v cc = 13.2 v r l = 4 ? 1 10 10 100 10 khz 1 khz 100 hz
TA8264AHQ 2006-04-28 11 cross talk c.t. (db) cross talk c.t. (db) singnal source resistance r g ( ? ) v no ? r g output noise voltage v no ( v rms ) frequency f (hz) r.r. ? f ripple rejection ratio r.r. (db) frequency f (hz) c.t. ? f (out1) cross talk c.t. (db) frequency f (hz) c.t. ? f (out2) frequency f (hz) c.t. ? f (out3) frequency f (hz) c.t. ? f (out4) cross talk c.t. (db) 100 10 100 k ? 70 0 1 k ? 60 ? 30 10 k ? 40 ? 20 ? 50 ? 10 v cc = 13.2 v r l = 4 ? r g = 620 ? v rip = 0dbm 100 10 100 k ? 70 0 1 k ? 60 ? 30 10 k ? 40 ? 20 ? 50 ? 10 v cc = 13.2 v r l = 4 ? v out = 0dbm r g = 620 ? out1 out2, 3, 4 100 10 100 k ? 70 0 1 k ? 60 ? 30 10 k ? 40 ? 20 ? 50 ? 10 out2 out1, 3, 4 v cc = 13.2 v r l = 4 ? v out = 0dbm r g = 620 ? 100 10 100 k ? 70 0 1 k ? 60 ? 30 10 k ? 40 ? 20 ? 50 ? 10 out3 out4 out3 out1, 2 v cc = 13.2 v r l = 4 ? v out = 0dbm r g = 620 ? 100 10 100 k 1 k 10 k ? 70 0 ? 60 ? 30 ? 40 ? 20 ? 50 ? 10 out4 out1, 2, 3 v cc = 13.2 v r l = 4 ? v out = 0dbm r g = 620 ? 100 10 100 k 0 300 1 k 50 200 10 k 100 150 250 v cc = 13.2 v r l = 4 ? bw = 20 hz~20 khz
TA8264AHQ 2006-04-28 12 frequency f (hz) g v ? f voltage gain g v (db) output power p out /ch (c) p d ? pout power dissipation p d (w) ambient temperature ta (c) p d max ? ta allowable power dissipation p d max (w) 25 0 150 0 120 75 60 100 40 20 80 100 50 125 infinite heat sink r jc = 1c/w heat sink (r hs = 3.5c/w) r jc + r hs = 4.5c/w no heat sink r ja = 39c/w 100 10 100 k 0 40 1 k 5 20 10 k 15 25 10 30 35 v cc = 13.2 v r l = 4 ? v out = 0dbm 0 10 40 30 50 20 60 70 5 15 20 10 25 0 9 v 13.2 v 16 v f = 1 khz r l = 4 ?
TA8264AHQ 2006-04-28 13 package dimensions weight: 7.7 g (typ.)
TA8264AHQ 2006-04-28 14
TA8264AHQ 2006-04-28 15 ? use an appropriate power supply fuse to ensure that a large current does not continuously flow in case of over current and/or ic failure. the ic will fully break down when used under conditions that exceed its absolute maximum ratings, when the wiring is routed improperly or when an abnormal pulse noise occurs from the wiring or load, causing a large current to continuously flow and the breakdown can lead smoke or ignition. to minimize the effects of the flow of a large current in case of breakdown, appropriate settings, such as fuse capacity, fusing time and insertion circuit location, are required. ? if your design includes an inductive load such as a motor coil, incorporate a protection circuit into the design to prevent device malfunction or breakdown caused by the current resulting from the inrush current at power on or the negative current resulting from the back electromotive force at power off. for details on how to connect a protection circuit such as a current limiting resistor or back electromotive force adsorption diode, refer to individual ic datasheets or the ic databook. ic breakdown may cause injury, smoke or ignition. ? use a stable power supply with ics with built-in protection functions. if the power supply is unstable, the protection function may not operate, causing ic breakdown. ic breakdown may cause injury, smoke or ignition. ? carefully select external components (such as inputs and negative feedback capacitors) and load components (such as speakers), for example, power amp and regulator. if there is a large amount of leakage current such as input or negative feedback condenser, the ic output dc voltage will increase. if this output voltage is connected to a speaker with low input withstand voltage, overcurrent or ic failure can cause smoke or ignition. (the over current can cause smoke or ignition from the ic itself.) in particular, please pay attention when using a bridge tied load (btl) connection type ic that inputs output dc voltage to a speaker directly. ? over current protection circuit over current protection circuits (referred to as current limiter circuits) do not necessarily protect ics under all circumstances. if the over current protection circuits operate against the over current, clear the over current status immediately. depending on the method of use and usage conditions, such as exceeding absolute maximum ratings can cause the over current protection circuit to not operate properly or ic breakdown before operation. in addition, depending on the method of use and usage conditions, if over current continues to flow for a long time after operation, the ic may generate heat resulting in breakdown. ? thermal shutdown circuit thermal shutdown circuits do not necessarily protect ics under all circumstances. if the thermal shutdown circuits operate against the over temperature, clear the heat generation status immediately. depending on the method of use and usage conditions, such as exceeding absolute maximum ratings can cause the thermal shutdown circuit to not operate properly or ic breakdown before operation. ? heat radiation design when using an ic with large current flow such as power amp, regulator or driver, please design the device so that heat is appropriately radiated, not to exceed the specified junction temperature (tj) at any time and condition. these ics generate heat even during normal use. an inadequate ic heat radiation design can lead to decrease in ic life, deterioration of ic characteristics or ic breakdown. in addition, please design the device taking into considerate the effect of ic heat radiation with peripheral components. ? installation to heat sink please install the power ic to the heat sink not to apply excessive mechanical stress to the ic. excessive mechanical stress can lead to package cracks, resulting in a reduction in reliability or breakdown of internal ic chip. in addition, depending on the ic, the use of silicon rubber may be prohibited. check whether the use of silicon rubber is prohibited for the ic you intend to use, or not. for details of power ic heat radiation design and heat sink installation, refer to individual technical datasheets or ic databooks.
TA8264AHQ 2006-04-28 16 restrictions on product use 060116ebf ? the information contained herein is subject to change without notice. 021023_d ? toshiba is continually working to improve the quality and reliability of its products. nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. it is the responsibility of the buyer, when utiliz ing toshiba products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such toshiba products could cause loss of human life, bodily injury or damage to property. in developing your designs, please ensure that toshiba products are used within specified operating ranges as set forth in the most recent toshiba products specifications. also, please keep in mind the precautions and conditions set forth in the ?handli ng guide for semiconductor devices,? or ?toshiba semiconductor reliability handbook? etc. 021023_a ? the toshiba products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). these toshiba products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury (?unintended usage?). unintended usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc. unintended usage of toshiba products listed in this document shall be made at the customer?s own risk. 021023_b ? the products described in this document shall not be used or embedded to any downstream products of which manufacture, use and/or sale are prohibited under any applicable laws and regulations. 060106_q ? the information contained herein is presented only as a guide for the applications of our products. no responsibility is assumed by toshiba for any infringements of patents or other rights of the third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of toshiba or others. 021023_c ? the products described in this document are subject to the foreign exchange and foreign trade laws. 021023_e ? this product generates heat during normal operation. however, substandard performance or malfunction may cause the product and its peripherals to reach abnormally high temperatures. the product is often the final stage (the external output stage) of a circuit. substandard performance or malfunction of the destination device to which the circuit supplies output may cause damage to the circuit or to the product. 030619_r about solderability, following conditions were confirmed ? solderability (1) use of sn-37pb solder bath solder bath temperature = 230c dipping time = 5 seconds the number of times = once use of r-type flux (2) use of sn-3.0ag-0.5cu solder bath solder bath temperature = 245c dipping time = 5 seconds the number of times = once use of r-type flux

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