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 el ectronics 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. n0508 ms jk/70102rm (ii) no.6983-1/3 LA4635A overview the LA4635A is a 2-channel power amplifier that is pin-comp atible with the la4636. it represents a new concept in devices of this type by allowing design editing based on co mmon circuit board pin compatibilit y for products of different power ranks. it is compatible with v cc = 9v and v cc = 12v specifications and is available in two versions with different voltage gains (LA4635A with vg = 35db and la4635b with vg = 45db). specifications maximum ratings at ta = 25 c parameter symbol conditions ratings unit maximum supply voltage v cc max no signal 24 v maximum output current i o peak per channel 2.5 a allowable power dissipation pd max infinite heat sink 25 w 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 12 v recommended load resistance r l op 3 to 8 allowable operating voltage range v cc op 5.5 to 22 v * set v cc , r l , and output level such that pd max. is not exceeded for the size of heat sink used. monolithic linear ic for general audio use 2-channel btl af power amplifier orderin g number : en6983a
LA4635A no.6983-2/3 electrical characteristics at ta = 25 c, v cc = 12v, r l = 3 , f = 1khz, rg = 600 ratings parameter symbol conditions min typ max unit quiescent current i cco rg = 0 18 35 80 ma standby current ist 1 10 a voltage gain vg v o = 0dbm 33 35 37 db total harmonic distortion thd p o = 1w 0.15 0.4 % p o 1 thd = 10% 3.0 4.5 w output power p o 2 v cc = 9v, thd = 10% 2.0 2.5 w output noise voltage v no rg = 0, bpf = 20hz to 20khz 0.05 0.25 mv ripple rejection svrr rg = 0, f r = 100hz, v r = 0dbm 50 60 db channel separation chsep rg = 10k , v o = 0dbm 55 65 db input resistance ri 20 30 40 k standby pin voltage v st amplifier on (pin 5 voltage) 1.5 5.0 v package dimensions unit : mm (typ) 3049b sample application circuit + 100 f 16v dc + 1 f 50v in1 + 1 f 50v in2 + 4.7 f 16v 1000 f 25v p. p pwr gnd + 1000 f 16v out2 nc nc stby v cc v cc r l pre gnd (popping noise eliminator) rx * 5v + + 1000 f 16v out1 r l LA4635A top view (ripple filter) * if voltage is to be applied to the standby pin (pin 5), a resistor (rx) should be inserted to limit the inflow current, as required. please refer to the information below. 123456789101112 -20 0 120 80 100 140 20 40 60 160 0 5 10 15 3.2 7 12.5 25 20 30 pd max -- ta infinite heat sink single ic ambient temperature, ta -- c allowable power dissipation, pd max -- w ai heat sink mounting torque 39n?cm flat washer silicone grease applied jc = 3 c/w 100 100 1.5mm 3 50 50 1.5mm 3
LA4635A ps no.6983-3/3 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 probabi lity. 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. (reference) pin 5 equivalent circuit inside ic ? the amplifier can be turned on and off by controlling the level (high/low) of pin 5. ? applying a signal equal or greater than 1.5v and 800 a to pin 5 turns on the amplifier. (if 5v is applied directly to pin 5 the inflow current of pin 5 is approximately 4.5ma.) ? if a voltage, vx, exceeding 5v is to be applied, current limiting resistor (rx) should be inserted to limit the inflow current to 4.5ma. (see following equation.) rx = (vx?5v) /4.5ma ? if pin 5 is to be controlled by the microprocessor, the pin 5 inflow current (ix) should be optimi zed for the capacity of the microprocessor by calculating rx using the following equation, as a general guideline, and then confirming the inflow current through actual measurement. rx = (vx/ix)?r1 (2k ) note : the LA4635A is basically pin-compatible with the la4636, but there are partial differences in operation and usage, including with regard to externally connected parts. this catalog provides information as of nobember, 2008. specifications and information herein are subject to change without notice. + ix rx ix=max 4.5ma stby r2 2k r1 2k 5 standby pin voltage vx
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