ordering number : enn7342 21504tn (ot) no. 7342-1/5 overview the stk404-000 series products are audio power amplifier hybrid ics that consist of optimally-designed discrete component power amplifier circuits that have been miniaturized using sanyo's 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 45 w to 180 w (10%/1 khz) devices. the same printed circuit board can be used depending on the output power grade. ? miniature packages 30 w to 40 w (thd = 0.4%, f = 20 hz to 20 khz); 44.0 mm 25.5 mm 8.5 mm * 50 w to 80 w (thd = 0.4%, f = 20 hz to 20 khz); 46.6 mm 25.5 mm 8.5 mm * 100 w to 120 w (thd = 0.4%, f = 20 hz to 20 khz); 59.2 mm 25.5 mm 8.5 mm * *: 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. package dimensions unit: mm 4198-sip10 44.0 8.5 36.5 13.0 25.6 (6.82) 3.6 0.5 2.54 0.4 2.9 4.0 20.0 110 9 2.54 = 22.86 sanyo: sip10 [STK404-050] STK404-050 sanyo electric co.,ltd. semiconductor company tokyo office tokyo bldg., 1-10, 1 chome, ueno, taito-ku, tokyo, 110-8534 japan one-channel class ab audio power amplifier ic 30 w thick-film hybrid ic 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, aircrafts 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.
no. 7342- 2 /5 STK404-050 item type no. STK404-050 stk404-070 stk404-090 stk404-100 stk404-120 stk404-130 stk404-140 output 1 (0.4%/20 hz to 20 khz) 30 w 40 w 50 w 60 w 80 w 100 w 120 w output 2 (10%/1 khz) 45 w 60 w 80 w 90 w 120 w 150 w 180 w maximum supply voltage (6 ) 37 v 43 v 46 v 51 v 59 v 64 v 73 v recommended supply voltage (6 ) 26 v 30 v 32 v 35 v 41 v 45 v 51 v remarks built-in thermal protection circuit package 44.0 mm 25.5 mm 8.5 mm 46.6 mm 25.5 mm 8.5 mm 59.2 mm 25.5 mm 8.5 mm series organization these products are organized as a series based on their output capacity. 10000 f 10000 f dba40c 500 500 +v cc - -v cc + + designated transformer power supply (mg-250 equivalent) 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 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 = 26.0 v, r l = 6 , f = 50 hz, p o = 30 w 0.3 s specifications maximum ratings at ta = 25 c 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 C3 db 20 to 20 k hz input impedance ri 26.0 1 k 1.0 55 k output noise voltage * 2 v no 32.0 rg = 10 k 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 = 30 db
no. 7342- 3 /5 STK404-050 internal equivalent circuit itf02213 sub tr1 tr2 tr3 tr4 r1 r2 c1 d1 r3 r6 tr5 c2 r5 r4 tr6 tr7 tr8 1 2 3 4 5 6 7 8 9 10 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 STK404-050
thermal design example the heat sink thermal resistance, q c-a, required to handle the total power dissipated within this hybrid ic is determined as follows: condition 1: the 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 ... (1) q c-a < (150 C ta)/pd C q j-c/n ... (2) values that satisfy both these inequalities at the same time are the required heat sink thermal resistance values. determining the following specifications allows us to obtain the required heat sink thermal resistance from inequalities (1) and (2): ? supply voltage: v cc ? load resistance: r l ? guaranteed ambient temperature: ta example: assume that the ic supply voltage, v cc , is 26 v, r l is 6 , and that the signal is a continuous sine wave. in this case, from the pd C p o characteristics, the maximum power will be 23 w for a signal with a frequency of 1 khz. 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.) that is: pd = 15 w (when 1/8 p o max is 3.75 w) the number, n, of power transistors in the hybrid ic's 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 (1): q c-a < (125 C 50)/15 < 5.0 from inequality (2): q c-a < (150 C 50)/15 C 3.0/2 < 5.17 therefore, the thermal resistance that satisfies both these expressions 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. no. 7342- 4 /5 STK404-050
ps no. 7342- 5 /5 STK404-050 this catalog provides information as of february, 2004. specifications and information herein are subject to change without notice. specifications of any and all sanyo 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 customers 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 customers products or equipment. sanyo electric co., ltd. strives to supply high-quality high-reliability products. however, any and all semiconductor products fail with some probability. it is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage 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. in the event that any or all sanyo products (including technical data, services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining 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 permission of sanyo electric co., ltd. any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. when designing equipment, refer to the delivery specification for the sanyo product that you intend to use. information (including circuit diagrams and circuit parameters) herein is for example 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 intellectual property rights or other rights of third parties. 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 p o v cc output po wer , p o w supply v oltage, v cc v itf02217 45 50 25 30 35 40 10 15 20 16 15 17 18 19 20 21 22 23 24 25 26 27 28 29 1 khz, 0.4% v cc = 26 v r l = 6 v g = 30 db tc = 25 c rg = 600 thd = 0.4% 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
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