specifications of any and all sanyo semiconductor co.,l td. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer ' s products or equipment. to verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer ' sproductsor equipment. any and all sanyo semiconductor co.,ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, av equipment, communication device, office equipment, industrial equ ipment etc.). the products mentioned herein shall not be intended for use for any "special application" (medica l equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, t ransportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of re liability and can directly threaten human lives in case of failure or malfunction of the product or may cause har m to human bodies, nor shall they grant any guarantee thereof. if you should intend to use our products for app lications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. if there is n o consultation or inquiry before the intended use, our customer shall be solely responsible for the use. 60309 ms/n0508 ms jk/32405tn (ot) no.8177-1/6 LA4631 overview the LA4631 (5w 2 channels) is a single-ended power amplifier that has a pin arrangement similar to the la4632 btl power amplifier (10w 2 channels). the LA4631's pin compatibility make s it possible to share a common printed circuit board among a series of end products differentiated by power rank. (note that the la4632 is provided in an sip-12h package, and that it is necessar y to provide a hole for the LA4631 pin 13 if the same printed circuit board is to be shared. note also that certain external components differ.) functions ? 2-channel power amplifier for audio applications specifications maximum ratings at ta = 25 c parameter symbol conditions ratings unit maximum supply voltage v cc max with no input signal 24 v maximum output current i o peak per channel 2 a allowable power dissipation pd max with an infinitely large heat sink 15 w maximum junction temperature tj max 150 c operating temperature topr -20 to +75 c storage temperature tstg -40 to +150 c operating conditions at ta = 25 c parameter symbol conditions ratings unit recommended supply voltage v cc 14 v recommended load resistance range r l op 4 ? allowable operating supply voltage range v cc op 5.5 to 22 v *: v cc , r l , and the output level must be set for the size of the heat sink used so that the pd max range is not exceeded. monolithic linear ic for audio applications 5w 2-channel af power amplifier orderin g number : en8177b
LA4631 no.8177-2/6 electrical characteristics at ta = 25 c, v cc = 14v, r l = 4 ? , f = 1khz, rg = 600 ? ratings parameter symbol conditions min typ max unit standby current ist vstb = 0v 1 10 a quiescent current drain i cco rg = 0, vstb = 5v 18 35 80 ma standby pin applied voltage vst the pin 5 voltage such that the amplifier is on 1.5 5 v output power p o thd = 10% 4 5 w total harmonic distortion thd v o = 1w 0.15 0.4 % voltage gain vg v o = 0dbm 33 35 37 db output noise voltage (rms) v no rg = 0, bpf = 20hz to 20khz 0.05 0.25 mvrms supply voltage rejection ratio svrr rg = 0, f r = 100hz, v cc r = 0dbm 50 60 db channel separation chsep rg = 10k ? , v o = 0dbm 45 55 db input resistance ri 20 30 40 k ? package dimensions unit : mm (typ) 3107b pd max -- ta aluminum heat sink tightening torque : 39n ? cm with silicone grease applied jc = 3 c/w with an infinitely large heat sink 100 100 1.5mm 3 50 50 1.5mm 3 without a heat sink 15 11.7 5.8 2.0 0 2 4 6 8 10 12 14 16 -20 0 20 40 60 80 100 120 140 160 allowable power dissipation, pd max -- w ambient temperature, ta -- c
LA4631 no.8177-3/6 block diagram application circuit example ripple filter LA4631 in1 pre gnd in2 standby p.p v cc out2 nc pwr gnd nc out1 nc c3 100 f 16v + c1 1f 10v + c2 1f 10v + vstb 5v c4 4.7f 16v + + ++ c5 1000 f 25v v cc c7 1000 f 16v r l r l 4 ? 4 ? c6 1000 f 16v 13 12 11 10 987654321 top view
LA4631 no.8177-4/6 external components and usage notes c1, c2 : these are input coupling ca pacitors; we recommend a value of 1 f or lower. the LA4631 input pin potential is about 1.4v, and th e polarity must be considered due to the dc potential of the circuits connected to the LA4631 front end. the amplifier's startup time (the time from the point power is first applied until the point an output is generated) will change proportiona lly with the values of these input capacitors. (when 1 f capacitors are used, the startup time will be about 0.2 seconds.) c3 : this capacitor is used as a rippl e filter. we recommend a value of 100 f. amplifier impulse noise when turned off (when the standby pin goes low) may be made worse if a value under 100 f is used. the pin 1 voltage is about 1/2v cc . a dc mute function can be applied if pin 1 is connected to ground through a 300 to 500 ? resistor. note that the muting activation voltage will be too low if a resistor value of 750 ? or higher is used. c4 : this is an impulse noise preventio n capacitor. the recommended value is 4.7 f. if a value of 2.2 f or lower is used for c4, impulse noise when the amplifier is turned off (when the standby pin goes low) may be made worse. also, if a value of 10 f or higher is used, an "incomplete muting" phenomenon may occur when the amplifier is turned off (when the standby pin goes low). c5 : power supply capacitor. this capacitor should be located as close as possible to the ic (to minimize increases in the power supply line impedance) to achieve stable amplifier operation. c6, c7 : output capacitors. these capacitors influence the amplifiers low band fre quency characteristics. (fc = 1/2 cout r l ) fc = low band cutoff frequency, cout = c6, c7 ? caution although the LA4631 is basically pin compatible with the la4632, there are certain di fferences in the external components and the way the devices are used. (reference) pin 5 ic internal equivalent circuit standby applied voltage vx + rx ix ix=max 4.5ma 5 stby r2 2k ? r1 2k ? ? the amplifier can be turned on or off by controlling the high/low state of pin 5. ? the amplifier is turned on by applying a voltage of 1.5v or higher or an influx current of 800 a or higher. (if a 5v level is applied directly to pin 5, the pin 5 influx current will be about 4.5ma.) ? if a voltage, vx, that exceeds 5v will be applied, insert a cu rrent limiter resistor (rx) so that the influx current does not exceed 4.5ma. (see the formula below.) rx = (vx ? 5v)/4.5ma ? when pin 5 is controlled by a microcontroller, to set up a pin 5 influx current (ix) optimal for the drive capacity of the microcontroller, calculate rx from the following form ula as a first approximation and measure the influx current to verify that level. rx = (vx/ix) ? r1 (2k ? ) *: when a voltage is applied to the standby pin (pin 5), refer to the above and insert a resistor (rx) to limit the influx current if required.
LA4631 no.8177-5/6 i cco -- v cc quiescent current, i cco -- ma supply voltage, v cc -- v r l = 4 ? rg = 0 0 10 20 30 40 50 60 70 0246810121416 p o -- v cc output power, p o -- w supply voltage, v cc -- v 0 2 4 6 7 8 9 10 1 3 5 18 20 22 24 26 4 6 8 10121416182022 thd -- p o total harmonic distortion, thd -- % output power, p o -- w v cc = 14v r l = 4 ? rg = 600 ? filter : flat 0.1 2 3 5 7 1.0 2 3 5 7 10 2 3 0.1 23 57 1.0 10 23 57 f = 10khz f = 1khz f = 100hz thd -- f total harmonic distortion, thd -- % frequency, f -- hz 0.1 2 3 5 7 1.0 2 3 5 7 10 10 23 57 100 23 57 1k 23 57 10k 23 57 100k v cc = 14v r l = 4 ? rg = 600 ? p o = 1w filter : flat response -- f response -- db frequency, f -- hz v cc = 14v r l = 4 ? rg = 600 ? v o = 0dbm -8 -7 -6 -5 -4 -3 -2 -1 0 1 10 23 57 100 23 57 1k 23 57 10k 23 57 100k 2 p o -- f v cc = 14v r l = 4 ? rg = 600 ? output power, p o -- w frequency, f -- hz thd = 10% thd = 1% 0 2 4 6 1 3 5 10 23 57 100 23 57 1k 23 57 10k 23 57 100k chsep -- f channel separation, chsep -- db frequency, f -- hz -70 -60 -50 -40 -30 10 23 57 100 23 57 1k 23 57 10k 23 5 v cc = 14v r l = 4 ? rg = 10k ? din audio ch2 1 ch1 2 vno -- rg output noise voltage, vno -- mvrms signal source resistance, rg -- ? 0 0.2 0.1 0.3 100 23 57 1k 23 57 10k 23 57 100k v cc = 14v r l = 4 ? din audio rg = 600 ? fin = 1khz thd = 10% r l = 4 ? r l = 8 ?
LA4631 ps no.8177-6/6 sanyo semiconductor co.,ltd. assumes no responsib ility for equipment failures that result from using products at values that exceed, even momentarily, rate d values (such as maximum ra tings, operating condition ranges, or other parameters) listed in products specif ications of any and all sanyo semiconductor co.,ltd. products described or contained herein. sanyo semiconductor co.,ltd. strives to supply high-qual ity high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. it is possible that these probabilistic failures or malfunction could give rise to acci dents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause dam age to other property. when designing equipment, adopt safety measures so that these kinds of accidents or e vents cannot occur. such measures include but are not limited to protective circuits and error prevention c ircuits for safe design, redundant design, and structural design. upon using the technical information or products descri bed herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of sanyo semiconductor co.,ltd. or any third party. sanyo semiconductor co.,ltd. shall not be liable f or any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. information (including circuit diagr ams and circuit parameters) herein is for example only; it is not guaranteed for volume production. any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. when designing equi pment, refer to the "delivery specification" for the sanyo semiconductor co.,ltd. product that you intend to use. in the event that any or all sanyo semiconductor c o.,ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities conc erned in accordance with the above law. no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any in formation storage or retrieval system, or otherwise, without the prior written consent of sanyo semiconductor co.,ltd. svrr -- v cc supply voltage rejection ratio, svrr -- db supply voltage, v cc -- v -70 -60 -50 -40 -30 -20 -10 0 15 05 25 10 20 r l = 4 ? rg = 0 f r = 100hz v cc r = 0dbm din audio svrr -- f r supply voltage rejection ratio, svrr -- db f r -- hz v cc = 14v r l = 4 ? rg = 0 v cc r = 0dbm din audio -70 -60 -50 -40 -30 10 23 57 100 23 57 1k 23 57 10k 2 svrr -- v cc r supply voltage rejection ratio, svrr -- db v cc r -- vrms -70 -60 -50 -40 1.5 0 0.5 2.5 1.0 2.0 v cc = 14v r l = 4 ? rg = 0 f r = 100hz din audio svrr = 20log(v o /v cc r) this catalog provides information as of june, 2009. specifications and information herein are subject to change without notice.
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