TDA7235
1.6W AUDIO AMPLIFIER
OPERATING VOLTAGE 1.8 TO 24V LOW QUIESCENT CURRENT HIGH POWER CAPABILITY LOW CROSSOVER DISTORTION SOFT CLIPPING
DESCRIPTION The TDA7235 is a monolithic integrated circuit in 4 +4 lead Minidip package, intended for use as class AB power amplifier with wide range of supply voltage in portable radios, cassette recorders and players, TV sets, etc..
Minidip (4 +4)
TEST AND APPLICATION CIRCUIT
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September 2003
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TDA7235
ABSOLUTE MAXIMUM RATINGS
Symbol VS IO Ptot Tstg, Tj Supply Voltage Output Peak Current Total Power Dissipation Tamb = 50C Tcase = 70C Storage and Junction Temperature Parameter Value 28 1 1.25 4 -40 to150 Unit V A W W C
PIN CONNECTION (Top view)
THERMAL DATA
Symbol Rth j-amb Rth j-case
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Thermal Resistance Junction-ambient Thermal Resistance Junction-pins
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Description max. max.
Value 80 15
Unit C/W C/W
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TDA7235
ELECTRICAL CHARACTERISTICS (VS = 12V, Tamb = 25C, f = 1KHz, unless otherwise specified.)
Symbol VS VO Id Ib PO Parameter Supply Voltage Quiescent Output Voltage Quiescent Drain Current Input Bias Current Output Power d = 10% VS = 9V VS = 12V VS = 15V VS = 20V RL = RL = RL = RL = 4 8 16 32 1.6 1.8 1.8 1.6 0.3 38 100 RS = 10K b = Curve A B = 22Hz to 22KHz f = 100Hz Rg = 10K 24 2 3 33 1 W W W W % dB K VS = 9V VS = 12V Test Condition Min. 1.8 4 5.5 4 Typ. Max. 24 Unit V V V mA
10
d GV Ri n eN
Distortion Closed Loop Voltage Gain Input Resistance Total Input Noise
PO = 0.5W RL = 8
SVR
Supply Voltage Rejection
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V V
dB
3/5
TDA7235
DIM. MIN. A a1 B B1 b b1 D E e e3 e4 F I L Z 0.44 0.38 0.7 1.39 0.91
mm TYP. 3.3 0.028 1.65 1.04 0.5 0.5 9.8 8.8 2.54 7.62 7.62 7.1 4.8 3.3 1.6 0.017 0.015 0.055 0.036 MAX. MIN.
inch TYP. 0.130 MAX.
OUTLINE AND MECHANICAL DATA
0.065 0.041 0.020 0.020 0.386 0.346 0.100 0.300 0.300 0.280 0.189 0.130 0.063
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PowerMinidip
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TDA7235
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Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners 2003 STMicroelectronics - All rights reserved STMicroelectronics GROUP OF COMPANIES Australia Belgium - Brazil - Canada - China Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States www.st.com
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