TDA7256

® TDA7256 30W BRIDGE CAR RADIO AMPLIFIER NO AUDIBLE POP DURING MUTE AND STANDBY OPERATIONS MUTING TTL COMPATIBLE VERY LOW STANDBY CONSUMPTION PROGRAMMABLE TURN ON DELAY DIFFERENTIAL INPUT SHORT CIRCUIT PROTECTIONS: RL SHORT - OUT TO GROUND - OUT TO VS OTHER PROTECTIONS: - Load dump voltage surge - Loudspeaker DC current - Very inductive load - Overrating temperature - Open ground DESCRIPTION The TDA7256 is a class AB fully protected bridge power amplifier, designed for car radio applicaBLOCK DIAGRAM MULTIWATT11 ORDERING NUMBER: TDA7256 tions. The high current capability allows to drive low impedance loads (up to 2Ω). The differential inputs availability makes it particularly suitable for boosters and active loudspeakers applications. October 1998 1/10 This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice. TDA7256 PIN CONNECTION (Top view) ABSOLUTE MAXIMUM RATINGS Symbol VS VS VS Io Io Ptot Tstg, TJ Operating Supply Voltage DC Supply Voltage Peak Supply Voltage (for 50ms) Output Peak Current (non repetiitive t = 0.1ms) Output Peak Current Repetitive f > 10Hz Power Dissipation (Tcase = 85°C) Storage and Junction Temperature Range Parameter Test Conditions 18 28 40 internally limited 5.5 36 -40 to +150 A W °C Unit V V V THERMAL DATA Symbol Rth j-case Description Thermal Resistance Junction-case Max Value 1.8 Unit °C/W 2/10 TDA7256 ELECTRICAL CHARACTERISTICS (VS = 14.4V, RL = 4Ω, f = 1KH...