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TDA2005 20W BRIDGE AMPLIFIER FOR CAR RADIO High output power : PO = 10 + 10 W@RL = 2, d = 10% ; PO = 20W@RL = 4 , d = 1 %. High reliability of the chip and package with additional complete safety during operation thanks to protection against : OUTPUT DC AND AC SHORT CIRCUIT TO GROUND OVERRATING CHIP TEMPERATURE LOAD DUMP VOLTAGE SURGE FORTUITOUS OPEN GROUND VERY INDUCTIVE LOADS Flexibility in use : bridge or stereo booster amplifiers with or without boostrap and with programmable gain and bandwidth. Space and cost saving : very low number of external components, very simple mounting system with no electrical isolation between the package and the heatsink (one screw only). In addition, the circuit offers loudspeaker protection during short circuit for one wire to ground. . . . . . MULTIWATT11 ORDERING NUMBERS : TDA2005M (Bridge Appl.) TDA2005S (Stereo Appl.) DESCRIPTION The TDA2005 is class B dual audio power amplifier in MULTIWATT® package specifically designed for car radio application : power booster amplifiers are easily designed using this device that provides a high current capability (up to 3.5 A) and that can drive very low impedance loads (down to 1.6 in stereo applications) obtaining an output power of more than 20 W (bridge configuration). ABSOLUTE MAXIMUM RATINGS Symbol Vs Vs Vs Io (*) Io (*) Ptot Tstg, Tj Parameter Operating Supply Voltage DC Supply Voltage Peak Supply Voltage (for 50 ms) Output Peak Current (non repetitive t = 0.1 ms) Output Peak Current (repetitive f 10 Hz) Power Dissipation at Tca se = 60 °C Storage and Junction Temperature Value 18 28 40 4.5 3.5 30 ­ 40 to 150 Unit V V V A A W °C (*) The max. output current is internally limited. PIN CONNECTION March 1995 1/21 TDA2005 SCHEMATIC DIAGRAM THERMAL DATA Symbol R th j-case 2/21 Parameter Thermal Resistance Junction-case Max. Value 3 Unit °C/W TDA2005 BRIDGE AMPLIFIER APPLICATION (TDA2005M) Figure 1 : Test and Application Circuit (Bridge amplifier) Figure 2 : P.C. Board and Components Layout of Figure 1 (1:1 scale) 3/21 TDA2005 ELECTRICAL CHARACTERISTICS (refer to the Bridge application circuit, Tamb = 25oC, GV = 50dB, Rth (heatsink) = 4oC/W, unless otherwise specified) Symbol Vs Vos Id Po Parameter Supply Voltage Output Offset Voltage (1) (between pin 8 and pin 10) Total Quiescent Drain Current Output Power Vs = 14.4V Vs = 13.2V Vs = 14.4V Vs = 13.2V d = 10% Vs = 14.4V Vs = 13.2V d Distortion RL = 4 RL = 3.2 f = 1 Hz RL = 4 RL = 3.2 RL = 3.2 18 20 17 75 70 20 22 19 Test Conditions Min. 8 Typ. Max. 18 150 150 150 160 Unit V mV mV mA mA W f = 1kHz RL = 4 Vs = 14.4V Po = 50mW to 15W RL = 3.2 Vs = 13.2V Po = 50mW to 13W f = 1kHz Po = 2W Po = 2W f = 1kHz RL = 3.2 RL = 3.2 f = 1kHz Rg = 10k (2) Rg = 10k, C4 = 10µF fripple = 100Hz, Vripple = 0.5V Vs = 14.4V, f = 1 kHz RL = 4 Po = 20W RL = 3.2 Po = 22W Vs = 13.2V, f = 1 kHz RL = 3.2 Po = 19W Vs = 14.4V, RL = 4 f = 1kHz, Ptot = 13W Vs = 14.4V Vs = 13.2V RL = 4 RL = 3.2 45 20 50 3 55 RL = 4 RL = 3.2 70 9 8 1 1