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TDA7381 4 x 18W BRIDGE CAR RADIO AMPLIFIER PRODUCT PREVIEW HIGH OUTPUT POWER CAPABILITY: 4 x 25W/4 EIAJ 4 x 18W/4 @ 14.4V, 1KHz, 10% 4 x 15W/4 @ 13.2V, 1KHz, 10% CLIPPING DETECTOR LOW DISTORTION LOW OUTPUT NOISE ST-BY FUNCTION MUTE FUNCTION AUTOMUTE AT MIN. SUPPLY VOLTAGE DETECTION DIAGNOSTICS FACILITY FOR: ­ CLIPPING ­ OUT TO GND SHORT ­ OUT TO V S SHORT ­ THERMAL SHUTDOWN LOW EXTERNAL COMPONENT COUNT: ­ INTERNALLY FIXED GAIN (26dB) ­ NO EXTERNAL COMPENSATION ­ NO BOOTSTRAP CAPACITORS PROTECTIONS: OUTPUT SHORT CIRCUIT TO GND, TO VS, ACROSS THE LOAD BLOCK AND APPLICATION DIAGRAM Vcc1 FLEXIWATT25 VERY INDUCTIVE LOADS OVERRATING CHIP TEMPERATURE WITH SOFT THERMAL LIMITER LOAD DUMP VOLTAGE FORTUITOUS OPEN GND REVERSED BATTERY ESD PROTECTION DESCRIPTION The TDA7381 is a new technology class AB Audio Power Amplifier in Flexiwatt 25 package designed for car radio applications. Vcc2 2.200µF 100nF ST-BY DIAGN. OUT MUTE OUT1+ IN1 0.1µF OUT1PW-GND OUT2+ IN2 0.1µF OUT2PW-GND OUT3+ IN3 0.1µF OUT3PW-GND OUT4+ IN4 0.1µF AC-GND 0.1µF SVR 47µF TAB S-GND OUT4PW-GND D93AU002C May 1997 This is preliminary information on a new product now in development. Details are subject to change without notice. 1/10 TDA7381 DESCRIPTION (continued) Thanks to the fully complementary PNP/NPN output configuration the TDA7381 allows a rail to rail output voltage swing with no need of bootstrap capacitors. The extremely reduced components count allows very compact sets. ABSOLUTE MAXIMUM RATINGS Symbol VCC VCC (DC) VCC (pk) IO Operating Supply Voltage DC Supply Voltage Peak Supply Voltage (t = 50ms) Output Peak Current: Repetitive (Duty Cycle 10% at f = 10Hz) Non Repetitive (t = 100µs) Power dissipation, (Tcase = 70°C) Junction Temperature Storage Temperature Parameter Value 18 28 50 3 4 80 150 ­ 40 to 150 Unit V V V A A W °C °C The on-board clipping detector simplifies gain compression operations. The fault diagnostics makes it possible to detect mistakes during CarRadio assembly and wiring in the car. Ptot Tj Tstg PIN CONNECTION (Top view) 1 25 D94AU117B THERMAL DATA Symbol Rth j-case Parameter Thermal Resistance Junction to Case Max. Value 1 Unit °C/W 2/10 DIAGNOSTICS AC-GND P-GND4 P-GND1 P-GND3 P-GND S-GND SVR OUT2+ OUT1+ OUT3+ OUT4+ ST-BY MUTE VCC VCC OUT4- OUT2- OUT1- OUT3- IN1 IN2 IN4 TAB IN3 TDA7381 ELECTRICAL CHARACTERISTICS (VS = 14.4V; f = 1KHz; Rg = 600; RL = 4; Tamb = 25°C; Refer to the Test and application circuit (fig.1), unless otherwise specified.) Symbol Iq1 VOS Gv Po Parameter Quiescent Current Output Offset Voltage Voltage Gain Output Power THD = 10% THD = 1% THD = 10%; VS = 13.2V THD = 1%; VS = 13.2V Po max THD eNo SVR fcl fch Ri CT ISB VSB out VSB IN AM VM out VM in Im (L) Im (H) ICDOFF ICDON Max. Output Power Distortion Output Noise Supply Voltage Rejection Low Cut-Off Frequency High Cut-Off Frequency Input Impedance Cross Talk St-By Current Consumption St-By OUT Threshold Voltage St-By IN Threshold Voltage Mute Attenua