specifications of any and all sanyo semiconductor co.,ltd. 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 ' s products or 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. the products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. if you should intend to use our products for new introduction or other application different from current conditions on the usage of automotive device, communication device, office equipment, industrial equipment etc. , please consult with us about usage conditi on (temperature, operation time etc.) prior to the intended use. if there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. 41812 sy 20120203-s00005 no.a2051-1/7 LA4631VC overview the LA4631VC built-in a 2 channel single-ended output power amplifier that a power supply voltage range is wide and has additionally the standby function to reduce the current drain. it is a power amplifier ic suitable for driving speaker of various audio system equipments, which is especially useful for products that use batteries. functions ? output power = 4.5w (typical) (v cc = 12v, r l = 3 ? , thd+n = 10%) ? built in standby function (pin5) ? built in thermal suht down circuit 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 2.5 a allowable power dissipation pd max with an infinitely large 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 range r l op 3 to 8 allowable operating supply voltage range v cc op 5.5 to 22 v *: 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 home audio use 2-channel se af power amplifier orderin g number : ena2051
LA4631VC no.a2051-2/7 electrical characteristics at ta = 25c, v cc = 12v, r l = 3 ? , f = 1khz, rg = 600 ? parameter symbol conditions ratings unit min. typ. max. 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 % output power p o 1 thd = 10% 3.0 4.5 w 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 mvrms ripple rejection svrr rg = 0 ? , f r = 100hz, v cc 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 applied voltage vst amp lifier on(pin 5 voltage) 1.5 5.0 v package dimensions unit : mm (typ) 3049c sanyo : sip12h 26.8 (20.0) (11.8) 1.0 min 13.2 max 1.0 2.0 4.0 7.0 6.0 0.5 0.4 1 12 (2.4) (8.4) (r1.7) 2.0 heat spreader pd max -- ta 100 100 1.5mm 3 50 50 1.5mm 3 0 5 10 15 20 25 30 -20 0 20 40 60 80 100 120 140 160 3.2 7 12.5 with an infinitely large heat sink single ic allowable power dissipation, pd max -- w ambient temperature, ta -- c
LA4631VC no.a2051-3/7 block diagram application circuit example ripple filter LA4631VC in1 pre gnd in2 standby p.p v cc out2 nc pwr gnd nc out1 + + + vstb 5v + + ++ v cc r l r l 12 11 10 9 8 7 6 5 4 3 2 1 top view
LA4631VC no.a2051-4/7 external components and usage notes c1, c2 : these are input coupling ca pacitors; we recommend a value of 1 f or lower. the LA4631VC 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 LA4631VC 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 proporti onally 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 (reference) pin 5 equivalent circuit inside ic (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 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 od pin 5 is approximately 4.5ma.) ? if a voltage, vx, exceeding 5v is to be applied, current limiting resi stor (rx) should be inse rted 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 optimized for the capacity of the microprocessor by calculating rx using the following equation, as a general guideline, and then confirming the inflow current through sctual measurement. rx = (vx/ix) ? r1 (2k ) note: when apply voltage to standby (pin 5), please add resistor (rx).
LA4631VC no.a2051-5/7 10 20 40 110 0 2 4 6 12 12 0 18 6810 24 22 4 pd - p o (v cc =12v) 0 1 2 3 6 0 1 2 3 4 2 4 6 8 10 14 16 20 22 0 30 50 60 70 80 90 100 14 16 18 12 20 8 10 pd - p o (v cc =9v) i cc - p o (v cc =12v) i cc - p o (v cc =9v) 4 5 0 200 400 600 1200 800 1000 0 200 400 600 1200 800 1000 i cco -- v cc p o -- v cc thd -- p o thd -- f 0.1 23 57 1.0 10 23 57 10 23 57 100 23 57 1k 23 57 10k 23 57 100k 0.1 2 3 5 7 1.0 2 3 5 7 10 0.1 2 3 5 7 1.0 2 3 5 7 10 f = 1khz f = 100hz f = 10khz 0.1 23 57 1.0 10 23 57 0.1 23 57 1.0 10 23 57 0.1 23 57 1.0 10 23 57 0.1 23 57 1.0 10 23 57 v cc = 12v f = 1khz v cc = 12v f = 1khz v cc = 9v f = 1khz v cc = 9v f = 1khz quiescent current, i cco -- ma supply voltage, v cc -- v output power, p o -- w supply voltage, v cc -- v total harmonic distortion, thd -- % output power, p o -- w total harmonic distortion, thd -- % frequency, f -- hz consumption current, i cc -- marms output power, p o -- w output power, p o -- w output power, p o -- w output power, p o -- w power dissipation, pd -- w power dissipation, pd -- w consumption current, i cc -- marms
LA4631VC ps no.a2051-6/7 25 27 31 37 0 1 2 3 6 0 0 29 33 35 4 5 0 0 10 23 57 100 23 57 1k 23 57 10k 23 57 100k 0.1 0.2 0 0.5 0 10 4681012141618 0.5 0.8 1.1 1.4 1.7 2.0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 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 10 23 57 100 23 57 1k 23 57 10k 23 57 100k gain -- f p o -- f chsep -- f vno -- rg thd = 10% thd = 1% 20 30 40 50 60 70 80 ch1 ch2 ch2 ch1 0.3 0.4 10 23 57 100 23 57 1k 23 57 10k 23 57 100k svrr -- v cc svrr -- f r f r -- hz v cc r -- vrms svrr -- v cc r 10 20 30 40 50 60 70 80 20 22 10 20 30 40 50 60 70 80 10 20 30 40 50 60 70 80 10 20 30 40 50 60 70 80 i cco -- vstby vstby -- v 1.6 1.8 2.0 v cc = 12v r l = 3 rg = 0 f r = 100hz bpf = 20hz to 20khz svrr = 20log(v o /v cc r) v cc = 12v r l = 3 rg = 0 gain -- db frequency, f -- hz output power, p o -- w channel separation, chsep -- db output noise voltage, vno -- mvrms frequency, f -- hz frequency, f -- hz supply voltage rejection ratio, svrr -- db supply voltage, v cc -- v supply voltage rejection ratio, svrr -- db supply voltage rejection ratio, svrr -- db quiescent current, i cco -- ma
LA4631VC ps no.a2051-7/7 this catalog provides information as of april, 2012. specifications and information herein are subject to change without notice. sanyo semiconductor co.,ltd. assumes no responsib ility 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 semiconductor co.,ltd. products described or contained herein. sanyo semiconductor co.,ltd. strives to supply high-quality high-reliab ility pr oducts, however, any and all semiconductor products fail or malfunction with some probab ility. it is possible that these pr obab ilistic failures or malfunction could give rise to accidents 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 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. upon using the technical information or products described 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 for 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. any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. when designing equip ment, 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 co.,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 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 consent of sanyo semiconductor co.,ltd.
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