ordering number : enn6629 o3100rm (ot) no. 6629-1/9 overview the LA4743A is a 45 w 4-channel power amplifier ic for car stereo systems. it features a built-in bridge circuit and the ability to radically reduce the number of external components required. it is also pin compatible with the la4743b, which differs in the amount of gain provided. features maximum output power: 45 w 4 channels (v cc = 14.4 v, 4 ? load, 1 khz) 40 w 4 channels (v cc = 13.7 v, 4 ? load, 1 khz) requires only seven external components and does not require an oscillation prevention rc circuit, a noise filter, or a bs capacitor. functions muting function built-in standby switch full complement of built-in protection circuits, including protection from shorting to v cc , shorting to ground, load shorting, overvoltages, and overheating. pa ck ag e dimensions unit: mm 3236-hzip25 2.0 2.0 29.2 2.60 (1.0) 25.6 0.53 r1.7 0.4 17.4 14.4 4.5 10.2 3.3 4.0 4.0 sanyo: hzip25 [LA4743A] LA4743A sanyo electric co.,ltd. semiconductor company tokyo office tokyo bldg., 1-10, 1 chome, ueno, taito-ku, tokyo, 110-8534 japan 45 w four-channel (bridge circuit) power amplifier monolithic linear ic any and all sanyo products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft? control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. consult with your sanyo representative nearest you before using any sanyo products described or contained herein in such applications. sanyo assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all sanyo products described or contained herein. parameter symbol conditions ratings unit maximum supply voltage v cc max1 signal present 18 v v cc max2 no signal (for 1 minute) 26 v maximum output current i o peak 4.5/ch a allowable power dissipation pd max with an arbitrarily large heat sink 50 w operating temperature topr ?0 to +85 ? storage temperature tstg ?0 to +150 ? package thermal resistance jc 1 ?/w specifications maximum ratings at ta = 25?c
no. 6629-2/9 LA4743A parameter symbol conditions ratings unit min typ max quiescent current i cco r l = , rg = 0 100 200 350 ma standby current ist vst = 0 v 10 a output offset voltage v n offset rg = 0 ?00 +100 mv voltage gain vg v o = 0 dbm 25 26 27 db voltage gain difference ? vg ? +1 db p o 1 thd = 10 % 23 28 w output power p o max1 v cc = 13.7 v, v in = 5 vrms 40 w p o max2 v in = 5 vrms 45 w total harmonic distortion thd p o = 4 w 0.05 0.4 % channel separation chsep v o = 0 dbm, rg = 10 k ? 55 65 db ripple rejection ratio svrr f r = 100 hz, v r = 0 dbm, rg = 0 50 60 db output noise voltage v no rg = 0, b.p.f. = 20 hz to 20 khz 100 200 vrms muting attenuation mute(att) v o = 20 dbm 70 80 db operating characteristics at ta = 25?c, v cc = 14.4 v, f = 1 khz, r l = 4 ? , rg = 600 ? parameter symbol conditions ratings unit recommended supply voltage v cc 14.4 v recommended load resistance r l 4 ? operating supply voltage range v cc op 9 to 18 v operating conditions at ta = 25?c
no. 6629-3/9 LA4743A sample application circuit and block diagram 9 11 6 20 7 1 8 5 3 12 2 4 22 10 17 15 19 25 n.c 18 13 21 23 14 24 16 top view out 1 + v cc 1/2 v cc 3/4 out 1 pwr gnd 1 out 2 + out 2 pwr gnd 2 mute out 3 + out 3 pwr gnd 3 10 k ? out 4 + out 4 pwr gnd 4 + + + in 1 0.22 f + in 2 0.22 f 3.3 f 0.022 f + in 3 st by 0.22 f + in 4 0.22 f 47 f r.f + 2200 f + 22 f pre gnd on time c + + + + + + + + tab protective circuit standby switch ripple filter mute circuit low level mute on muting & on time control circuit protective circuit a13496 +5 v st on
no. 6629-4/9 LA4743A pin functions and equivalent circuits at v cc = 14.4 v, st-by = 5 v pin no. function dc voltage [v] notes internal equivalent circuit 1 tab 2 8 18 24 power gnd 3 130 ? 130 ? v cc 5 7 9 17 19 21 23 a13497 3 5 7 9 17 19 21 23 ?ut2 +out2 ?ut1 +out1 +out3 ?ut3 +out4 ?ut4 2.7 ? the amplifier will be on when the applied voltage is between 2 v and v cc . 4 st-by 10 k ? 30 k ? 1.5 k ? 4 a13498 6 20 v cc 1/2 v cc 3/4 ? low ripple power supply line for all internal ic blocks 10 svr 13.2 200 ? 200 ? v cc 1 k ? 10 a13499 continued on next page. low saturation voltage circuit bias circuit st-by power supply line input amplifier st-by power supply line
no. 6629-5/9 LA4743A continued from preceding page. pin no. function dc voltage [v] notes internal equivalent circuit 11 12 14 15 in1 in2 in4 in3 100 ? 1 k ? 5 pf 30 k ? v ref 11 12 14 15 a13500 ?amplifier turn-on time control circuit ?impulse noise prevention circuit ? with a 22 f capacitor, the turn-on time will be 0.6 s. 16 on time mute 20 k ? 10 k ? 2 k ? 13 k ? 40 k ? 2 k ? 200 ? v ref 16 a13501 13 ?the muting function is activated when the applied voltage is under 1 v. 22 mute 4.1 3 k ? 1 k ? 7.5 k ? 10 k ? 100 ? 100 k ? v ref v ref 22 a13502 3.1 ?input amplifiers that require no capacitor in the input noise filter. pre gnd 2.6 25 n.c. input amplifier st-by power supply line inverter amplifier bias circuit power supply line input amplifier st-by power supply line amplifier bias circuit
no. 6629-6/9 LA4743A notes on usage and handling oscillator stabilization time in some cases, details of the printed circuit board layout may lead to induced parasitic oscillation. this oscillation can be prevented by adding any one of the following components. verify the optimal values for these capacitors by testing in actual end products. technique 1 ... connect mylar capacitors (0.1 f) between the btl amplifier outputs. technique 2 ... connect an rc circuit (2.2 ? and 0.1 f in series) between each output and ground. audio quality (low band) the low-band frequency characteristics can be improved by adjusting the values of the input capacitors. the recommended value is 2.2 f. impulse noise the LA4743A includes a built-in impulse noise suppression circuit. however, further improvement can be achieved by using the muting circuit. when first applying power, activate the muting function at the same time as applying power. then, after the output dc potential has stabilized, turn off the muting function. when turning off the power, first activate the muting function and then turn off the power. sample transient responses are attached (see the timing charts). transient responses at power on power on: standby and muting activated at the same time. muting is turned off after the output has stabilized. + 22 3.3 f mute 10 k ? mute mute off on time 5 [v] 0 4 2 0 200 ms/div 0 [v] 5 [v] transient responses at power off power off: after activating the muting circuit, turn the power off. + 22 3.3 f mute 10 k ? mute 200 ms/div 5 [v] 0 4 2 0 0 [v] 5 [v] standby set high external 10 k ? muting switch standby pin output pin standby set low external 10 k ? muting switch standby pin output pin
no. 6629-7/9 LA4743A 50 0 100 150 200 250 300 0510 15 20 25 2 3 5 7 0.1 2 3 5 7 1.0 2 3 5 7 10 2 3 5 7 100 0.01 1 0 2 3 4 5 10 23 5 7 100 23 5 7 1k 23 5 7 10k 8 12 16 4 20 24 28 32 36 40 44 48 810121 4161820 2 3 5 7 0.1 2 3 5 7 1 2 3 5 7 10 2 3 5 7 100 0.01 0.1 23 57 1 23 57 10 23 57 100 2 3 5 7 0.1 2 3 5 7 1 2 3 5 7 10 2 3 5 7 100 0.01 0.1 357 1 2357 10 2357 100 2 2 3 5 7 0.1 2 3 5 7 1 2 3 5 7 10 2 3 5 7 100 0.01 0.1 23 57 1 23 57 10 23 57 100 ?0 ? ? ? ? 0 2 4 10 i cco , v n ?v cc i cco i cco v n v n 0.22 f 2.2 f out1, 3 out2, 4 out1, 3 out2, 4 p o ?v in p o ? cc r l = open rg = 0 ? vst = 5 v thd ?p o thd ?p o f ?response thd ?f v cc = 14.4 v r l = 4 ? f = 1 khz rg = 600 ? v g = 26 db all channels driven v cc = 14.4 v r l = 4 ? f = 100 hz rg = 600 ? all channels driven v cc = 14.4 v r l = 4 ? f = 1 khz rg = 600 ? all channels driven v cc = 14.4 v r l = 4 ? rg = 600 ? p o = 2 w all channels driven v cc = 14.4 v r l = 4 ? rg = 600 ? v o = 0 dbm at f = 1 khz all channels driven v cc = 14.4 v r l = 4 ? f = 10 khz rg = 600 ? all channels driven r l = 4 ? f = 1 khz rg = 600 ? thd = 10 % all channels driven 2 3 5 7 0.1 2 3 5 7 1 2 3 5 7 10 0.01 10 23 57 100 23 57 100 23 57 1k 23 57 10k 23 57 100k 23 57 1k 23 57 10k 23 57 100k thd ?p o supply voltage, v cc ? v quiescent current, i cco ? v output pin voltage, v n ? v output power, p o ? w input level, v in ? mvrms output power, p o ? w supply voltage, v cc ? v output power, p o ? w total harmonic distortion, thd ? % output power, p o ? w output power, p o ? w total harmonic distortion, thd ? % total harmonic distortion, thd ? % total harmonic distortion. thd ? % input frequency, f ? hz input frequency, f ? hz response ? db
?0 ?00 ?0 ?0 ?0 ?0 ?00 ?0 ?0 ?0 0 ?0 ?0 ?0 ?0 0 0 ?0 ?0 ?0 ?0 0 10 23 57 100 23 57 1k 23 57 10k 23 57 100k 10 23 57 100 23 57 1k 23 57 10k 23 57 100k 23 57 100 23 57 1k 23 57 10k 23 57 23 57 23 57 23 57 23 57 100k 100 1k 10k 100k 10 ?00 ?00 10 2 3 5 0.01 7 0.1 2 3 5 7 1 10 23 57 100 23 57 1k 23 57 10k 23 57 100k ?00 ?0 ?0 ?0 ?0 0 10 23 57 100 23 57 1k 23 57 10k 23 57 100k 0 0.1 1 10 50 100 150 200 250 300 100 ?0 ?0 ?0 0 20 40 60 80 100 ch sep ?f 1 2 2 1 2 3 2 4 1 3 1 4 3 1 3 2 pd [w] i cc [a] 4 3 4 2 4 1 3 4 ch sep ?f ch sep ?f ch sep ?f v no ?g i cco ?a pd, i cc ? o 1 2 3 5 7 10 2 3 5 7 100 0.01 23 57 0.1 23 57 1 23 57 10 23 57 100 svrr ?fr v cc = 14.4 v r l = 4 ? rg = 10 k ? v o = 0 dbm v cc = 14.4 v r l = 4 ? rg = 10 k ? v o = 0 dbm v cc = 14.4 v r l = 4 ? din audio v cc = 14.4 v r l = 4 ? rg = 10 k ? v o = 0 dbm v cc = 14.4 v r l = 4 ? rg = 0 ? v ccr = 0 dbm v cc = 14.4 v r l = open rg = 0 ? v cc = 14.4 v r l = 4 ? rg = 10 k ? v o = 0 dbm v cc = 14.4 v r l = 4 ? rg = 600 ? f = 1 khz all channels driven no. 6629-8/9 LA4743A channel separation, ch sep ? db input frequency, f ? hz channel separation, ch sep ? db channel separation, ch sep ? db channel separation, ch sep ? db input frequency, f ? hz input frequency, f ? hz input frequency, f ? hz input resistor, rg ? ? ripple frequency, fr ? hz output noise voltage, v no ? mvrms ripple rejection ratio, svrr ? db output power, p o ? w ambient temperature, ta ? ?c power dissipation, pd ? w quiescent current, i cco ? ma current drain, i cc ? a
ps no. 6629-9/9 LA4743A this catalog provides information as of october, 2000. specifications and information herein are subject to change without notice. specifications of any and all sanyo 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? 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? products or equipment. sanyo electric co., ltd. strives to supply high-quality high-reliability products. however, any and all semiconductor products fail with some probability. it is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. when designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. in the event that any or all sanyo products (including technical data, services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining the export license from the authorities concerned 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 information storage or retrieval system, or otherwise, without the prior written permission of sanyo electric co., ltd. any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. when designing equipment, refer to the ?elivery specification for the sanyo product that you intend to use. information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. sanyo believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. 0.01 2 3 5 7 0.1 2 3 5 7 1 2 3 5 7 10 ?0 ?0 ?0 0 20 40 60 80 100 thd ?ta v cc = 14.4 v r l = 4 ? rg = 600 ? f = 1 khz p o = 2 w all channels driven ambient temperature, ta ? ?c total harmonic distortion, thd ? %
|
