TA8231L TOSHIBA | Alldatasheet
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TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC 42W BTLx2CH AUDIO POWER IC The TA8231L is BTL audio power amplifier for consumer application. It is designed for high power, low distortion and low noise. ee It contains various kind of protectors and the function of ZO stand-by. a s FEATURE mo | ii @ High Power wml (| + Pout (1) =42W (Typ.) ul | (Vcc = 14.4V, f= 1kHz, THD = 10%, RL =20) : Pout (2) =37W (Typ.) (Vcc = 13.2V, f= 1kHz, THD = 10%, RL=20) - HSIPI7-2.00 : Pour (3) =22W (Typ.) Weight : 9.8g (Typ.) (Vcc = 13.2V, f= 1kHz, THD = 10%, R_ =40) @ Excellent Output Power Bandwidth : POUT (4) = 17W (Typ.) (Vcc = 13.2V, f= 20Hz~20kHz, THD = 1%, RL = 40) @ Fixed Voltage Gain : Gy =32dB (Typ.) (Vcc = 13.2V, Vout = 0.775Vrms (0dBm) @ Low Thermal Resistance » Gj-c=1.5°C/W (Typ.) @ Low Distortion : THD = 0.02% (Typ.) (Vcc = 13.2V, f= 1kHz, Pout =4W, RL=40) © Built-in Stand-by Switch Function : IsTBY = 100/A (Typ.) (With pin® set at high, power is turned ON) @ Built-in Various Protection Circuit : Thermal Shut Down, Over Voltage, Out to GND, Out to Vcc, Out to Out Short © Operating Supply Voltage : Vcc (opr) = 9~18V 980508EBA2 malfunction or ‘all due to their inherent electrical ensivty and vulnerability to physical stress. ts the responsibilty of the buyer, wien tlising TOSHIBA products, to observe standards of safety, and to avoid situations in which a malfunction or failure of a TOSHIBA product could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent products specifications. Also, please keep in mind the precautions and conditions set forth in the TOSHIBA Semiconductor Reliability Handbook. @ The products described in this document are subject to foreign exchange and foreign trade laws. @ The information contained herein is presented only as a guide for the applications ‘of our products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others e The information contained herein is subject to change without notice. 9998-05-15 19
(Gy = 32dB) + | a" © vec @ (—@ @O-; pe | . = ree > OF, bt @-- IN2 O=B+—(2) P 1 pe | : Tt 7 ) @* Pre-cno J stay “& *° CAUTION AND APPLICATION METHOD (Description is made only on the single channel.) 1. Voltage gain adjustment This IC has no NF (negative feedback) terminals. Therefore, the voltage gain can’t adjusted, but it makes the device a space and total costs saver. The voltage gain is decided only internal by expression below. ital Gy =20f0g —— +6 (dB) = 32 (dB) Vv ay #2 input C) Pp 1998-05-15 2/9
- Stand-By SW Function By means of controlling pin@ (Stand-by terminal) to High Vee and Low, the power supply can be set to ON and OFF. Dondrower AL rok ov The threshold voltage of pin® is set at about 3V (Typ.), Fore / 8E and the Power Supply current is about 100A (Typ.) at I t To bias « the stand-by state. wtting Cicult Pin® Control Voltage : V (5B) (Fig. 2) With pin® set to High, | stand-ty | Power | V (sp) (V) Power is turned ON. | ON [| ofF | 0-2 | [| orr [on | 3+Vec ~ Advantage of Stand-By SW ~ (1) | Since Vec can directly be controlled to ON/OFF by the microcomputer, the switching relay can be omitted. (2) Since the control current is microscopic, the switching relay of small current capacity is satisfactory for switching. L ty switch Relay. arge current capacity swite Le Lp patter Battery unk Vee Vee aT Microcomputer U (Conventional Method ) U Small current cpacity switch Directly from microcomputel) Battery Battery Stand-By Vec Stand-By Vcc (Stand-By Switch Method) 3. Preventive measure against oscillation For preventing the oscillation, it is advisable to use C4, the condenser of polyester film having small characteristic fluctuation of the temperature and the frequency. The resistance R to be series applied to C4 is effective for phase correction of high frequency, and improves the oscillation allowance. Since the oscillation allowance is varied according to the causes described below, perform the temperature test to check the oscillation allowance. (1) Capacity value of condenser (2) Kind of condenser (3) Layout of printed board 1998-05-15 3/9
MAXIMUM RATING (Ta = 25°C) CHARACTERISTIC SYMBOL RATING UNIT Peak Supply Voltage (0.25) | Vecisurge) | 50 | V_ DC Supply Voltage Vec (DC Operating Supply Voltage | Veciop) | 18 | V_ | Output Current (peak) | lovey | 9 | AY [Power Dissipation | Pp | 50] _w | Operating Temperature -30~85 Storage Temperature = 55~150
ELECTRICAL CHARACTERISTICS
(Unless Otherwise Specified Vcc = 13.2V, f= 1kHz, Rg = 6000, R_ =40, Ta =25°C) TEST CHARACTERISTIC SYMBOL CONDITION jw | ve | wa UNIT CUIT [Quiescent Current | teeq’ = [| = [Vin=0 | = [150] 250 | ma | Vcc = 14.4V, THD = 10%, [town |= ]pesan MPTP T= [a] = | w | Output Power out (2 |= | 0%, RL 8 3 | = | [Pout(ay | — [THD =10%, RL =a [tf — | Ww] THD = 1%, f=20Hz~20kHz, Pout (4) RL=40 7 w Total Harmonic Distortion | THD | — [Pout=4W | — | 02 | 02 | % | Voltage Gain [sy | — [Vout=0.775Vpme Oder) | 305] 32) 335 | ae _| WWoltage Gain Ratio | a¢y | — |Vout=0.775Vins (dm) | -1| 0 | 1] 8 Rg =00, DIN45405 vi oe cl 0.07 V, [no [= [Re=00, ewe 20re~20KHe | — | 006 | 0.1 [rv Tripple = 100Hz, Ripple Rejection Ratio Vout = 0.775Vrms (dBm) , Rg = 6000, Rg = 6000, 9 1 [input Resistance | Rin, T= 0 = YT KO Output Offset Voltage | Vofteet_| — [Vin=0 | =200| — 0] 200 | mv Stand-By Current isray [= [Pind GND LD = 00 iso a] 1998-05-15 4/9
(Gy = 32dB) of | Te © vec at @O7.% fe i OTe - O7-4 nz OF @) > b z: Ss t q ©-+2 @ G3, Pre-Gno J sey “, 3° 7998-05-15 5/9
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HSIP17-P-2.00 Unit : mm 30.040.2 5,040.3 E a = g= 4 5) +55) ef+— =P i S E 3 =| 2 | ime g y ; g | 3 2.575TYP 36.5MAX 36.040.2 1 17 Weight : 9.8g (Typ.) 1998-05-15 9/9