53007 ms pc/53096ha(ii)/20293ts/9200ta,ts(k oto)/3050ta,ts(a f) no.3309-1/9 semiconductor components industries, llc, 2013 june, 2013 http://onsemi.com LA4425A overview the LA4425A is a 5w power amplifier with very few ex ternal parts. the smallest package in the industry [sip-5h(to-126 type)]. only two external parts (only i/o coupling capacitors). almost no evaluation, adjustment and check of its functions as a power ic required and simplified control functions ? wide operation supply range 5 to 16v ? on-chip protection: - over-voltage protection - thermal protection - output d.c. short protection . ? on-chip pop noise reducing circuit specifications maximum ratings at ta = 25 c parameter symbol conditions ratings unit maximum supply voltage v cc max rg = 0 18 v surge maximum supply voltage v cc surge giant pulse 200ms rise time 1ms 50 v maximum output current i o peak 3.3 a allowable power dissipation pd max with infinite heat sink 7.5 w operating temperature topr -30 to +80 c storage temperature tstg -40 to +150 c orderin g numbe r : en3309d ordering number : en3309d monolithic linear ic 5w power amplifier with very few external parts for car radio and car stereo stresses exceeding maximum ratings may damage the device. maximum ratings are stress ratings only. functional operation above the recommended oper ating conditions is not implied. extended exposure to stresses above the recommended operating conditions may affect device reliabili ty.
LA4425A no.a0195-2/9 1 5 0.51min 14.25max 9.5 (2.0) (2.0) 10.0 13.0 0.6 (11.8) 2.7 1.2 0.5 1.1 1.5 2.0 (0.75) 3.2 sanyo : sip5h operating conditions at ta = 25 c, parameter symbol conditions ratings unit recommended supply voltage v cc 13.2 v recommended load resistance r l 4 operating voltage range v cc op 5 to 16 v operating load resistance range r l op under conditions where maximum ratings are not exceeded 2 to 8 electrical characteristics at ta = 25 c, v cc = 13.2v, r l = 4 , f = 1 khz, rg = 600 , specified board/specified circuit, 30 30 1.5mm 3 thick aluminum used parameter symbol conditions ratings unit min typ max quiescent current i cco 65 130 ma voltage gain v g v o = 0dbm 43 45 47 db output power p o 1 13.2 v / 4 , thd = 10% 4 5 w p o 2 14.4 v / 4 , thd = 10% 5 6 w total harmonic distortion thd v o = 2v 0.1 1.0 % output noise voltage v no rg = 0, bpf = 20 hz to 20 khz 30 40 db ripple rejection ratio svrr1 rg = 0, bpf = 20 hz to 20 khz v r = 0dbm, f r = 100hz 30 40 db svrr2 rg = 0, bpf = 20 hz to 20 khz v r = 0dbm, f r = 100 hz 47 db over-voltage attack v cc x rg = 0 21.5 v starting time t s 0.35 s input resistance r in 50 k roll-off frequency f l 40 hz f h 90 khz thermal operating temperature tc 125 c package dimensions unit : mm (typ) 3031c -30 -20 0 20 40 60 80 100 0 2 4 6 8 10 1.2 2.9 4.3 5.7 7.5 pd max -- ta ambient temperature, ta -- c allowable power dissipation, pd max -- w no heat sink 30 30 1.5mm 3 50 50 1.5mm 3 100 100 1.5mm 3 infinite heat sink al heat sink mounting toque 39n . cm with sillicone grease applied. 12 c/w
LA4425A no.a0195-3/9 ci 2.2 f 1000 f + + + co 1000 f 1 2 3 4 5 v cc 13.2v speake r 4 LA4425A sample application circuit ? on-chip overvoltage protection ? on-chip thermal protection ? on-chip pop noise reducing circuit ? on-chip output d.c. short protection pin voltage at v cc = 13.2v characteristics input small signal gnd large signal gnd output v cc pin no. 1 2 3 4 5 pin voltage (reference value) ( 2v be ) 1.4v 0v 0v ( 1/2v cc ) 6.5v (v cc ) 13.2v ic usage notes maximum ratings if the ic is used in the vicinity of the maximum ratings, even a slight variation in conditions may cause the maximum ratings to be exceeded, there by leading to a breakdown. printed circuit board when drawing the printed circuit pattern, refer to the sample printed circuit pattern. be careful not to form a feedback loop between input and output. comparison of external components external parts our ics now in use LA4425A output coupling capacitor ? ? input coupling capacitor ? ? bootstrap capacitor ? - feedback capacitor ? - filter capacitor ? - phase compensation capacitor ? - oscillation correction polyester film capacitor ? - oscillation correction resistor ? - total 8 pcs. 2 pcs. note: the power supply capacitor is not counted as a power ic part.
LA4425A no.a0195-4/9 p o -- v in 23 23 57 100 57 10 1.0 10 7 5 1.0 7 5 0.1 7 5 3 2 3 2 3 2 7 5 0.1 23 57 1.0 23 57 10 10 7 5 3 2 1.0 7 5 0.1 7 5 3 2 thd -- p o 1 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 10 23 5 100 23 5 1k 23 5 10k 23 5 100k f response thd -- f 7 5 3 2 1.0 7 5 3 2 0.1 3 357 100 23 57 1k 23 57 10k 23 f h f l 100 80 60 40 20 0 024681012141618202224 12 10 8 6 4 2 0 0 2 4 6 8 1012141618202224 i cco -- v cc v n -- v cc r l =4 rg=0 r l =4 rg=0 supply voltage, v cc -- v supply voltage, v cc -- v quiescent current, i cco -- ma output pin voltage, v n -- v v cc =13.2v r l =4 f=1khz rg=600 input voltage, v in -- mv output power, p o -- w v cc =13.2v r l =4 f=1khz rg=600 output power, p o -- w total harmonic distortion, thd -- % total harmonic distortion, thd -- % response -- db frequency, f -- hz frequency, f -- hz v cc =13.2v r l =4 rg=600 v o =0dbm v cc =13.2v r l =4 rg=600 v o =2v(p o =1w) sample printed circuit pattern 1 5 LA4425A gnd v cc out co=1000 f ci=2.2 f gnd cv cc =1000 f ?+ ? + ? + in cu-foiled side 78.0 29.0mm 2
LA4425A no.a0195-5/9 thd -- v cc 5 3 2 1.0 7 5 3 2 0.1 7 5 6 8 10 12 14 16 18 20 p o -- v cc 12 10 8 6 4 2 0 8 101214161820 i cc , pd -- p o 700 600 500 400 300 200 100 0 7 6 5 4 3 2 1 0 7 0.1 23 57 1.0 23 57 10 i cc , pd -- p o 0 200 0 2 4 6 8 10 400 600 800 1000 1200 7 0.1 23 57 1.0 23 57 10 2 svrr -- v r v no -- rg svrr -- f r svrr -- v cc 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 7 1k 23 57 10k 23 57 100k 2 50 40 30 20 10 0 8 9 10 11 12 13 14 15 16 17 18 19 50 40 30 20 10 0 0 200 400 600 800 1000 1200 50 40 30 20 10 0 057 100 23 57 1k 2 r l =4 f=1khz v o =2v(p o =1w) rg=600 f=1khz rg=600 thd=10% supply voltage, v cc -- v total harmonic distortion, thd -- % supply voltage, v cc -- v output power, p o -- w r l =2 r l =4 r l =4 f=1khz rg=600 r l =2 f=1khz rg=600 output power, p o -- w output power, p o -- w current drain, i cc -- ma current drain, i cc -- ma power dissipation, pd -- w power dissipation, pd -- w i cc v cc =16v v cc =13.2v i cc v cc =16v v cc =13.2v v cc =13.2v r l =4 bpf=20hz to 20khz rg=0 0.12mv supply voltage, v cc -- v signal source resistance, rg -- output noise voltage, v no -- mv ripple rejection ratio, svrr -- db r l =4 v r =0dbm f r =100hz rg=0 bpf=20hz to 20khz ripple rejection ratio, svrr -- db ripple rejection ratio, svrr -- db power supply ripple, v r -- mvrms ripple frequency, f r -- hz v cc =13.2v r l =4 f r =100hz rg=0 bpf=20hz to 20khz v cc =13.2v r l =4 rg=0 v r =0dbm bpf=20hz to 20khz
LA4425A no.a0195-6/9 i cco -- ta v n -- ta p o -- ta 80 60 40 20 0 0 1 2 3 4 5 6 10 8 6 4 2 0 -60 -40 -20 0 20 40 60 80 100 -60 -40 -20 0 20 40 60 80 100 -60 -40 -20 0 20 40 60 80 100 v cc =13.2v r l =4 rg=0 ambient temperature, ta -- c ambient temperature, ta -- c quiescent current, i cco -- ma output pin voltage, v n -- v output power, p o -- w v cc =13.2v r l =4 f=1khz thd=10% ambient temperature, ta -- c v cc =13.2v/4 rg=0 switch"on"locus t s 0.2s/div gnd 2v/div v cc =13.2v/4 rg=0 "off"locus 0.2s/div gnd 2v/div v cc =13.2v r l =4 rg=0
LA4425A no.a0195-7/9 instructions and precautions ? connect a capacitor of 1000pf across pins ? and ? for external disturbance path. ? be careful of the ground line artwork when laying out the pr inted circuit pattern. arrange so that the sg route and load current flow-in route do not overlap. refer to the recomme nded printed circuit pattern or make slits, etc. at pins ? and ? . dual printed circuit pattern example ? short circuit tests our company's recommended printed circuit board: apply v cc =13.2v using a 30 30 1.5mm 3 thick aluminum board. the ic will be protected from the dc/ac shorting of switches 1 to 4 above. however, be careful not to damage the ic by turning v cc ?on? when dc short (sw 1 or sw 2) is on. ? power supply positive surge the over-voltage protector (v cc x 21.5v) inside the ic is used to cut all bias routes and reverse bias between b-e of output stage elements, in order to increase the power line?s cap ability of handling positive surge. this means, of course, that a v ces (v cbo ) type output stage element is used instead of the v ceo (v cer ) type. + + 0.15 f 2.2 f 1000 f rg 620 13.2v LA4425A r l jaso tester application of giant pulse sw1 sw3 13.2v sw2 sw4 LA4425A + + + out1 v cc out2 in1 gnd gnd in2 1 1 cu-foiled side 45.0 75.0mm 2
LA4425A no.a0195-8/9 ? load resistance and misoperation it should be noted that when r l < 2 and v cc is high, and the switch is turned ?on? when setting is for a signal (thd = 10%), the ground detector (current voltage schmitt circuit) operates momentarily. ? precautions on tab if power voltage is applied to the ic substrate (the heat sink on a set), the ic structure is such that the pn junctions may be burned, causing deterioration or destruction. consult our company?s quality assurance department with regard to the energy handling capability (voltage peak value, pulse width). also, the ic tab (substrate) is connected to pin 3, large signal gnd. ? test of +v cc to output pin the power pin is in a floating state when a power capacitor is connected, so if +v cc touches output lines a and b , the upper power transistor inside the ic will be damaged. the LA4425A has a protective bypass route inside the ic. ? starting time (t s ) this is set at 0.35sec/typ, but it can be made shorter by making input capacitor ci smaller, or longer by making it larger. ? pop noise the pop noise prevention circuit operates to reduce pop until rg reaches 50k . however, if rg is left open, the charging route of input capacitor ci is lost, so the pop noise reduction circuit stops operating and click noises become louder. ? vg/osc the voltage gain is fixed at 45db inside the ic. it is impossible to change it externally. phase compensation capacitors (350pf/total) are connected between individual stages inside the ic, and the open loop gain is low. in addition, the upper and lower drives are made equivalent so that final stage current gain is adjusted, providing a measure against unwanted high-frequency parasitic oscillation peculiar to power ic?s. ? btl connection connection is impossible with ic alone. ? reverse mounting of ic the pin assignment is such that there is no danger of damage. ? t.s.d (thermal shutdown) operating temperature + + + LA4425A 13.2v a b floating 0 20 40 60 80 100 120 140 160 180 tc ( c) i cc ,p o 30 30 1.5mm3 thick al board ta=25 c
LA4425A ps no.3309-9/9 t.s.d is capable of starting operation at tc 120 to 130 c. when this is converted to junction temperature (tj) according to the formula below. tj 165c, tj = qjc . pd + tc as t.s.d operation progresses, the output pin bias voltage drops, and it becomes harder to drive the upper waveform. therefore, the current (i cc ) and power (p o ) show a tendency to decrease. proper cares in mounting radiator fin 1. the mounting torque is in the range of 1. the mounting torque is in the range of 39 to 59 n . cm. 2. the distance between screw holes of the radiator fin must coincide with the distance be tween screw holes of the ic. 3. the screw to be used must have a head equivalent to the one of truss machine screw or binder machine screw defined by jis. washers must be also used to protect the ic case. 4. no foreign matter such as cutting particles shall exist be tween heat sink and radiator fi n. when applying grease on the junction surface, it must be app lied uniformly on the whole surface. 5. because the heat sink mounting tab and the heat sink are at the same electric potential as the chip?s gnd, care must be taken when mounting the heat sink on more than one device. 6. ic lead pins are soldered to the printed circuit board after the radiator fin is mounted on the ic. on semiconductor and the on logo are registered trademarks of semiconductor components industries, llc (scillc). scillc owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. a listing 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 without further notice to any products herein. scillc mak es no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does scillc assume any liability ar ising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequentia l or incidental damages. ?typical? parameters which may be provided in scillc data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including ?typicals? must be validated for each customer application by customer?s techn ical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc products are not designed, intended, or authorize d for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other appli cation 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 arising out of, directly or indirectly, any claim of persona l injury or death associated with such unintended or unauthorized use, even if such claim alleges that scillc was negligent regarding the design or manufacture o fthe part. scillc is an equal opportunity/affirmative action employer. this literature is subject to all applicable copyright laws a nd is not for resale in any manner.
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