sanyo electric co.,ltd. semiconductor company tokyo office tokyo bldg., 1-10, 1 chome, ueno, taito-ku, tokyo, 110-8534 japan ordering number : enn7727 52004tn (ot) no.7727-1/5 overview the stk404-000s series products are audio power amplifier hybrid ics that consist of optimally-designed discrete component power amplifier circuits that have been miniaturized using sanyos unique insulated metal substrate technology (imst). the adoption of a newly-developed low thermal resistance substrate allows this series of devices to be provided in miniature packages significantly more compact than earlier sanyo products with similar specifications. features ? series of pin compatible power amplifiers ranging from 45w to 180w (10%/1khz) devices. the same printed circuit board can be used depending on the output power grade. ? miniature packages 30w to 40w (thd=0.4%, f=20hz to 20khz); 44.0mm 25.6mm 8.5mm * 50w to 80w (thd=0.4%, f=20hz to 20khz); 46.6mm 25.5mm 8.5mm * 100w to 120w (thd=0.4%, f=20hz to 20khz); 59.2mm 25.5mm 8.5mm * *: not including the pins. ? output load impedance: r l =6 ? allowable load shorted time: 0.3 seconds ? supports the use of standby, muting, and load shorting protection circuits. sanyo semiconductors data sheet STK404-050S thick-film hybrid ic one-channel class ab audio power amplifier ic 30w 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's 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. item type no. STK404-050S stk404-070s stk404-090s stk404-100s stk404-120s stk404-130s stk404-140s output 1 (0.4%/20hz to 20khz) 30w 40w 50w 60w 80w 100w 120w output 2 (10%/1khz) 45w 60w 80w 90w 120w 150w 180w maximum supply voltage (6 ) 37v 43v 46v 51v 59v 64v 73v recommended supply voltage (6 ) 26v 30v 32v 35v 41v 45v 51v remarks built-in thermal protection circuit package 44.0mm 25.6mm 8.5mm 46.6mm 25.5mm 8.5mm 59.2mm 25.5mm 8.5mm series organization these products are organized as a series based on their output capacity.
no.7727- 2 /5 STK404-050S 1 10 44.0 36.5 (6.82) 9 2.54=22.86 3.6 0.5 2.54 8.5 0.4 2.9 5.5 13.0 25.6 17.8 4.0 package dimensions unit : mm 4203 sanyo : sip10 specifications maximum ratings at ta = 25 c parameter symbol conditions ratings unit maximum supply voltage (no signal) v cc max(0) 40 v maximum supply voltage v cc max(1) r l =6 37 v thermal resistance q j-c per power transistor 3.0 c/w junction temperature tj max both the tj max and the tc max conditions must be met. 150 c operating ic substrate temperature tc max 125 c storage temperature tstg C30 to +125 c allowable load shorted time * 3 ts v cc = 26.0v, r l =6 , f=50hz, p o =30w 0.3 s notes: 1. unless otherwise noted, use a constant-voltage supply for the power supply used during inspection. 2. the output noise voltage values shown are peak values read with a vtvm. however, an ac stabilized (50 hz) power supply shoul d be used to minimize the influence of ac primary side flicker noise on the reading. 3. use the transformer power supply circuit shown in the figure below for allowable load shorted time measurement and output n oise voltage measurement. this ic is designed assuming that applications will provide a load-shorting protection function that operates within 0.3 second s of the load being shorted and that either cuts off power to the ic or eliminates the load-shorted state in some other manner. parameter symbol conditions * 1 ratings unit v cc (v) f (hz) p o (w) thd (%) min typ max output power p o (1) 26.0 20 to 20 k 0.4 30 w p o (2) 26.0 1 k 10 45 frequency characteristics f l , f h 26.0 1.0 +0 C3db 20 to 20k hz input impedance ri 26.0 1 k 1.0 55 k output noise voltage * 2 v no 32.0 rg=10k 1.2 mvrms quiescent current i cco 32.0 no loading 50 ma neutral voltage v n 32.0 C100 0 +100 mv operating characteristics at tc=25 c, r l =6 (noninductive load), rg=600 , vg=30db 10000 f 10000 f dba40c 500 500 +v cc - -v cc + + designated transformer power supply (mg-25 equivalent)
no.7727- 3 /5 STK404-050S internal equivalent circuit bias pre driver sub pow e r stag e 1 2 4 3 8 10 9 6 5 7 itf02363 sample application circuit itf02214 1 1k 1.8k 56k 100 / 1w 56k 4.7k 4.7k 4.7 / 1w 4.7 / 1w 0.22 2.2 f 2.2 h 3pf 100 f 10 f 10 f 10 f 100 f 47 f 470pf 0.1 f 2 3 4 5 6 7 8 9 10 + in +12v +v cc - -v cc out + + + + + + r l STK404-050S
no.7727- 4 /5 STK404-050S thermal design example if we define pd, the total power dissipation on the board when this hybrid ic is in operation, the heat sink thermal resistance, q c-a, is determined as follows: condition 1: the hybrid ic substrate temperature tc must not exceed 125 c. pd q c-a + ta < 125 c ... (1) ta: guaranteed ambient temperature for the end product. condition 2: the junction temperature of each transistor must not exceed 150 c. pd q c-a + pd/n q j-c + ta < 150 c ... (2) n: number of power transistors q j-c: thermal resistance per power transistor we take the power dissipation in the power transistors to be pd evenly distributed across those n power transistors. if we solve for q c-a in equations (1) and (2), we get the following inequalities: q c-a < (125 C ta)/pd ... (3) q c-a < (150 C ta)/pd C q j-c/n ... (4) values that satisfy both these inequalities at the same time are the required heat sink thermal resistance values. example: for actual music signals, it is usual to use a pd of 1/8 of p o max, which is the power estimated for continuous signals in this manner. (note that depending on the particular safety standard used, a value somewhat different from the value of 1/8 used here may be used.) when v cc = 26v and r l = 6 , we get the following expression for the total power dissipation on the board, pd: pd = 15w (when 1/8 p o max is 3.8w) ... (5) the number, n, of power transistors in the hybrid ics audio amplifier block is 2. since the thermal resistance, q j-c, per transistor is 3.0 c/w, the required heat sink thermal resistance, q c-a, for a guaranteed ambient temperature of 50 c will be as follows: from inequality (3): q c-a < (125 C 50)/15=5.00 ... (6) from inequality (4): q c-a < (150 C 50)/15 C 3.0/2=5.17 ... (7) therefore, the thermal resistance that satisfies both these expressions (6,7) at the same time is 5.0 c/w. note that this thermal design example assumes the use of a constant-voltage power supply, and is only provided as an example for reference purposes. thermal designs must be tested in an actual end product.
ps no.7727- 5 /5 STK404-050S specifications of any and all sanyo products described or contained herein stipu late the performance , characteristics, and functions of the described products in the independent stat e, 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 p roducts or equipment. sanyo electric co., ltd. strives to supply high-quality high-reliability product s. however, any and al l semiconductor products fail with some probability. it is possible that these pro babilistic failures coul d give rise to accidents or events that could endanger human lives, that could giv e rise to smoke or fire, or that could cause damage to other property. when designing equipment, adopt sa fety measures s o t hat these kinds of accidents or events cannot occur. such measures include but a re not limited to protectiv e circuits and error prevention circuits for safe design, redundant design, and st ructural design. in the event that any or all sanyo products(including technical data,services) d escribed o r contained herein are controlled under any of applicable local export control law s and regulations, such products m ust not be e xpor ted without obtaining the e xpor t license from the author ities concerned in accordance with the above law. no part of this publication may be reproduced or transmitted in any form or by a ny means, electronic o r 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 with out notice due to product/technology improvement, etc. when designing equipment, refer to the "del ivery specification " for the sanyo product that you intend to use. information (including circuit diagrams and circuit parameters) herein is for ex ample 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 inte llectual property rights or other rights of third parties. this catalog provides information as of may, 2004. specifications and information herein are subject to change without notice. thd p o itf02215 1.0 0.1 0.01 7 5 0.1 7 5 3 3 2 7 5 3 2 7 5 3 2 2 2 1.0 10 2 3 5 2 3 5 7 7 2 3 5 7 10 20 khz 20 hz 1 khz pd p o itf02216 0 1.0 0.1 35 30 20 25 15 10 5 2 3 5 7 2 3 5 2 3 5 7 7 10 v cc = 26 v r l = 6 v g = 30 db tc = 25 c rg = 600 t otal harmonic distortion, thd % output po wer , p o w t otal de vice po wer dissipation, pd w output po wer , p o w p o f output po wer , p o w frequenc y , f hz itf02218 1k 10 100 60 20 30 40 50 2 3 5 7 2 3 5 7 2 3 5 7 2 3 10k thd = 10% thd = 0.4% v cc = 26 v r l = 6 v g = 30 db rg = 600 tc = 25 c v cc = 29 v 26 v 23 v f = 1 khz r l = 6 v g = 30 db tc = 25 c rg = 600 p o v cc output po wer , p o w supply v oltage, v cc v itf02356 70 90 80 30 40 50 60 0 10 20 5 10 15 20 25 30 35 40 f=1khz, thd=0.4% f=1khz, thd=10% r l =6 v g=30db rg=600 tc=25 c
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