L5950

® L5950 MULTIPLE MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO 5 REGULATORS 10V (350mA); 8.5V (175mA); 5V (350mA); 5V (250mA); 8V/10V (1A) ALL REGULATORS ARE LOW DROPOUT OUPUTS 3 HIGH SIDE DRIVERS: 2A (HSD1), 0.45A (HSD2 & HSD3) NO EXTERNAL CHARGE PUMP CAPACITORS ARE REQUIRED STAND BY MODE CONTROLLED BY 3 INPUT PINS: ENABLE FOR REG2 AND REG3, I2C BUS FOR REG1, REG4, REG5, HSD1, HSD2, HSD3 INDIVIDUAL THERMAL SHUTDOWN INDEPENDENT CURRENT LIMITING SHORT CIRCUIT PROTECTION LOAD DUMP PROTECTION AND OVERVOLTAGE SHUTDOWN ESD PROTECTED BLOCK DIAGRAM BAT GND Multiwatt15 DESCRIPTION The ASPM (Audio System Power Module) is an integration of three high side drivers and five regulators developed to provide the power for an audio system. The outputs of the IC are controlled via the I2C bus and the Enable input. External protection must be provided for reverse battery protection. REG 1 10V 350mA REG1 VOLTAGE REFERENCE REG 2 8.5V 175mA REG2 VREF 8.5 & 5V ENABLE REG 3 5V 350mA REG3 ENABLE SCL PC OUTPUT CONTROL SDA REG 4 8V/10V 1A REG4 REG 5 5V 250mA REG5 CURRENT LIMIT PROTECTION LOGIC INDIVIDUAL THERMAL SHUTDOWN OVERVOLTAGE PROTECTION DRIVE 1 2A HSD1 DRIVE 2 450mA HSD2 DRIVE 3 450mA HSD3 D99AU1002 March 2001 1/8 L5950 ABSOLUTE MAXIMUM RATINGS Symbol VS VS Vin Vout Top Tstg Parameter DC Operating Supply Voltage Transient Supply Overvoltages, rise time = 10ms delay time = 115ms Input Voltages (EN, SDA, SCL) Output Control Voltage Operating Temperature Range Storage...