TDA7250

TDA7250 60 W HI-FI DUAL AUDIO DRIVER . . . . . . . WIDE SUPPLY VOLTAGE RANGE : 20 TO 90 V (± 10 to ± 45 V) VERY LOW DISTORTION AUTOMATIC QUIESCENT CURRENT CONTROL FOR THE POWER TRANSISTORS WITHOUT TEMPERATURE SENSE ELEMENTS OVERLOAD CURRENT PROTECTION FOR THE POWER TRANSISTORS MUTE/STAND-BY FUNCTIONS LOW POWER CONSUMPTION OUTPUT POWER 60 W/8 Ω AND 100 W/4 Ω DIP20 ORDERING NUMBER : TDA7250 DESCRIPTION The TDA7250 stereo audio driver is designed to drive two pair of complementary output transistor in the Hi-Fi power amplifiers. APPLICATION CIRCUIT March 1995 1/11 TDA7250 PIN CONNECTION (top view) ABSOLUTE MAXIMUM RATINGS Symbol Vs Ptot Tj, Tstg Supply Voltage Power Dissipation at Tamb = 60 °C Storage and Junction Temperature Parameter Value 100 1.4 – 40 to + 150 Unit V W °C THERMAL DATA Symbol Rth j-amb Parameter Thermal Resistance Junction-ambient Max. Value 65 Unit °C/W 2/11 TDA7250 PIN FUNCTIONS N° 1 2 3 4 5 Name VS – POWER SUPPLY NON–INV. INP. CH. 1 QUIESC. CURRENT CONTR. CAP. CH1 SENSE (–) CH. 1 ST. BY / MUTE / PLAY Negative Supply Voltage. Channel 1 Input Signal. This capacitor works as an integrator, to control the quiescent current to output devices in no-signal conditions on channel 1. Negative voltage sense input for overload protection and for automatic quiescent current control. Three-functions Terminal. For VIN = 1 to 3 V, the device is in MUTE and only quiescent current flows in the power stages ; - for VIN < 1 V, the device is in STAND-BY mode and no q...