? semiconductor components industries, llc, 2015 1 publication order number: july 2015- rev. 0 LA4282/d LA4282 audio power amplifier class ab, 10w 2-channel overview the LA4282 is the ic for 2-channel se power amplifier that is developed for tvs and monitors audio system. high power and low distortion are realized. this ic incorporate various functions (muting function, and various protection circuit) necessary for audio system. features ? high-power 2-channel af power amplifier ? low distortion ? minimum number of external parts required (no bootstrap capacitor required) ? low pop noise at the time of power supply on/off ? good ripple rejection (58db typ) ? wide operating voltage range ? external muting available ? on-chip protector against abnormality (thermal shutdown, overvoltage) typical applications ? home stereo ? tv specification absolute maximum ratings at ta = 25 ? c (note 1) parameter symbol conditions ratings unit maximum supply voltage v cc max quiescent 45 v maximum output current i o peak 4a allowable power dissipation pd max with heat sink 25 w operating temperature topr ? 20 to ? 75 ? c storage temperature tstg ? 40 to ? 150 ? c 1. stresses exceeding those listed in the absolu te maximum rating table may damage the device. if any of these limits are exceeded, device function ality should not be assumed, damage may occur and reliability may be affected. recommended operating range at ta = 25 ? c (note 2) parameter symbol conditions ratings unit recommended supply voltage v cc 32 v v cc o p 10 to 40 v recommended load resistance r l 8 ?? 2. functional operation above the stresses listed in the recommended operating ranges is not implied. extended exposure to stresses beyond the recommended operating ranges limits may affect device reliability. www.onsemi.com sip12 26.8 mm x 11.8 mm ordering information ordering code: LA4282-e package sip12 (pb-free / halogen free) shipping (qty / packing) 20 / fan-fold ? for information on tape and reel specifications, including part orientation and tape sizes, please refer to our tape and reel packaging specifications brochure, brd8011/d. http://www.onsemi.com/pub_link/collateral/brd8011-d.pdf xxxxxxxxxx ymddd xxxxx = specific device code y = year m = month ddd = additional traceability data generic marking diagram*
LA4282 www.onsemi.com 2 electrical characteristics at ta ? 25 ? c, v c = 32v, r l = 8 ? , f = 1khz, rg = 600 ? , see test circuit. (note3) parameter symbol conditions ratings unit min typ max quiescent current i cco ( 1 ) quiescent 30 60 100 ma i cco ( 2 ) muting switch on 30 56 100 ma voltage gain vg 38 40 42 db voltage gain difference ? vg 1.5 db output power p o (1) thd = 1% 9.0 10.0 w p o (2) thd = 3% 10.0 11.5 w total harmonic distortion thd p o = 2w 0.05 0.20 % output noise voltage v no rg = 10k ? , bw = 20hz to 20khz 0.25 1.0 mv ripple rejection svrr rg = 10k ? , f r = 100hz, v r = 0dbm 45 58 db crosstalk ct rg = 10k ? 45 60 db muting v o ( mt ) muting switch on, v in = ? 5dbm ? 35 dbm 3. product parametric performance is indica ted in the electrical characteristics for the listed test conditions, unless otherwi se noted. produc t performance may not be indicated by the electrical characteri stics if operated under different conditions. package dimensions unit : mm sip12 26.8x11.8 / sip12h case 127am issue a
LA4282 www.onsemi.com 3 pin assignment and block diagram 1 2 3 4 5 6 7 8 9 10 11 12 nf1 in1 ripple filter ripple filter mute circuit thermal over voltage protector + - - + ch2 v cc ch1 pre gnd in2 nf2 out2 mute power gnd2 v cc out1 power gnd1 30k 300 30k 300 20 40 60 100 0 4 5.0 10.4 15.0 25.0 2.9 8 12 16 -20 0 80 20 24 28 pd max -- ta with 50 50 1.5mm 3 ai board with arbitrarily large heat sink ambient temperature, ta -- c allowable power dissipation, pd max -- w tightening torque 39n ? cm jk428203 with 200 200 1.5mm 3 ai board with 100 100 1.5mm 3 ai board independent ic with silicone grease applied
LA4282 www.onsemi.com 4 test circuit mt/sw 10 11 12 9 7 3 5 6 4 1 2 c9 c4 c3 c2 c1 input2 input1 + + + + + + + c6 r l 8 r l 8 + v cc + - ch1 - + ch2 * polyester film capacitor * * 8 56k c8 0.1 f r2 2.2 r1 2.2 c7 0.1 f 1000 f/25v 1000 f/25v c5 100 f/25v 4.7 f 4.7 f 100 f 100 f c10 470 f/50v
LA4282 www.onsemi.com 5 20 30 50 0 2 4 6 8 10 12 0 10 40 14 16 18 p o -- v cc thd = 10% 3% 1% supply voltage, v cc -- v output power, p o -- w jk428204 rl = 8 f = 1khz dual operation frequency, f -- hz jk428206 1k 10k 100k 0 2 4 6 8 10 10 23 5 100 12 14 16 p o -- f thd = 10% 3% 1% output power, p o -- w 7 2357 2357 2357 v cc = 32v r l = 8 dual operation -50 -40 0 -120 -100 -80 -60 -40 -20 -70 -60 -10 -20 -30 0 20 40 v o -- v in input voltage, v in -- dbm output signal level, v o -- dbm jk428208 thd = 10% noise level mute on v cc = 32v f = 1khz mute off (r l = 8 ) r l = 100 r l = 8 23 57 10 23 0.01 3 2 5 0.1 2 1.0 3 5 2 0.1 23 57 1.0 10 3 5 2 thd -- p o output power, p o -- w total harmonic distortion, thd -- % jk428210 10hz 1khz f = 10khz v cc = 32v r l = 8 dual operation 57 100 23 57 1000 5 0.1 2 3 2 1.0 5 3 3 57 10 23 10 5 2 3 5 p o -- v in input voltage, v in -- mv output power, p o -- w jk428209 f = 1khz thd = 10% 32v 30v v cc = 35v 0 2 4 6 8 10 12 14 16 p o -- f thd = 3% 1% frequency, f -- hz output power, p o -- w jk428207 1k 10k 100k 10 23 5 100 7 23 5 7 23 5 7 23 5 7 v cc = 32v r l = 8 vg = 34d dual operation p o -- v cc output power, p o -- w 10 20 40 0 2 4 6 8 030 10 12 14 supply voltage, v cc -- v jk428205 thd = 10% 3% r l = 4 f = 1khz dual operation 5 3 2 7 5 3 2 7 5 3 2 0.1 1.0 10 23 5 2 3 5 2 3 5 2 3 5 100 1k 10k 100k thd -- f frequency, f -- hz total harmonic distortion, thd -- % jk428211 2w v cc = 32v r l = 8 dual operation p o = 4w
LA4282 www.onsemi.com 6 5 1k 23 5 10k 2 100k -10 -2 -4 -6 -8 23 5 100 23 35 0 2 response -- f frequency, f -- hz response -- db jk428212 v cc = 32v v o = 0dbm r l = 8 vg = 40db / 1khz 50 0 2 4 6 8 10 0 10 20 30 40 12 14 p o -- v cc thd = 10% 3% 1% supply voltage, v cc -- v output power, p o -- w jk428214 f = 1khz r l = 16 dual operation 57 10 2 5 7 0.1 1.0 23 57 23 35 pd -- p o output power, p o -- w allowable power dissipation, pd -- w jk428216 v cc = 35v 32v 25v 30v 20v thd = 10% 2 3 5 7 2 3 5 1.0 10 f = 1khz dual operation r l = 4 5 100k 10k 1k 2 23 5 23 5 23 35 v no -- rg output noise voltage, v no -- mv jk428218 fil ter-out filter-in 7 5 0.1 1.0 2 3 5 2 3 5 7 signal source resistance, rg -- v cc = 32v r l = 8 bw = 20hz to 20khz 5 57 7 0.1 1.0 23 57 23 10 v ro -- v r ripple voltage, v r -- vrms output ripple voltage, v ro -- mvms jk428219 7 5 0.1 1.0 2 3 5 2 3 5 7 rg = 10k rg = 0 v cc = 32v r l = 8 57 10 2 5 7 0.1 1.0 23 57 23 35 pd -- p o output power, p o -- w allowable power dissipation, pd -- w jk428217 v cc = 40v 35v 32v 30v 25v thd = 10% 2 3 5 7 2 3 5 1.0 10 f = 1khz dual operation r l = 16 57 10 2 2 3 5 7 2 3 5 1.0 10 5 7 0.1 1.0 23 57 23 35 pd -- p o output power, p o -- w allowable power dissipation, pd -- w jk428215 v cc = 40v 35v 32v 30v 25v thd = 10% f = 1khz dual operation r l = 8 57 10 2 2 3 5 2 3 5 2 3 5 0.1 1.0 5 7 0.1 1.0 23 57 23 35 i cc -- p o output power, p o -- w current dissipation, i cc -- a jk428213 v cc = 32v dual operation r l = 4 8 16
LA4282 www.onsemi.com 7 on semiconductor and the on logo are registered trademarks of semiconductor components industries, llc (scillc) or its subsidiaries in the united st ates and/or other countries. scillc owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. a lis ting of scillc?s product/patent coverage may be accessed at www.onsemi.com/site/pdf/patent-marking.pdf . scillc reserves the right to make changes with out further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for any parti cular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. ?typical? parameters which may be provided in scillc data sheets and/or specific ations can and do vary in different applications and actual performance may vary over time. all operating parameters, including ?typicals? must be validated fo r each customer application by customer?s technical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc pro ducts are not designed, intended, or authorized for use as com ponents in systems int ended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the scillc product could create a situation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indemnify and hold scillc and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees ar ising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that sci llc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employer. this literature is subject t oall applicable copyright laws and is not for resale in any manner. 01020304050 v ro -- v cc supply voltage, v cc -- v output ripple voltage, v ro -- mv jk428220 v r = 0.775vrms (0dbm) 0.245vrms ( ? 10dbm) 10 1.0 100 2 3 5 2 3 5 2 3 5 10 25 325 325 325 3 100 1k 10k 100k ct -- f frequency, f -- hz crosstalk, c.t -- db jk428221 10 20 30 40 50 60 80 70 0 rg = 10k f r = 100hz ch1 ? ch2 ch2 ? ch1 v cc = 32v r l = 8 r g = 10k v o = 0dbm
|
