L5950 MULTIPLE MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO 5 REGULATORS10V (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) MULTIWATT15 NO EXTERNAL CHARGE PUMP CAPACITORS ARE REQUIRED ORDERING NUMBER: L5950 STAND BY MODE CONTROLLED BY 3 INPUT 2 PINS:ENABLE FOR REG2 AND REG3, I C BUS FOR REG1, REG4, REG5, HSD1, HSD2, DESCRIPTION HSD3 The ASPM (Audio System Power Module) is an inte- INDIVIDUAL THERMAL SHUTDOWN gration of three high side drivers and five regulators INDEPENDENT CURRENT LIMITING developed to provide the power for an audio system. SHORT CIRCUIT PROTECTION The outputs of the IC are controlled via the I2C bus LOAD DUMP PROTECTION AND and the Enable input. OVERVOLTAGE SHUTDOWN External protection must be provided for reverse bat- ESD PROTECTED tery protection. BLOCK DIAGRAM BAT REG 1 GND REG1 10V 350mA VOLTAGE REG 2 REFERENCE REG2 8.5V 175mA VREF REG 3 REG3 5V 350mA 8.5 & 5V ENABLE ENABLE REG 4 REG4 8V/10V 1A SCL PC OUTPUT CONTROL SDA REG 5 REG5 5V 250mA CURRENT DRIVE 1 LIMIT HSD1 2A PROTECTION LOGIC INDIVIDUAL DRIVE 2 HSD2 THERMAL 450mA SHUTDOWN OVERVOLTAGE PROTECTION DRIVE 3 HSD3 450mA D99AU1002 September 2013 1/8L5950 ABSOLUTE MAXIMUM RATING Symbol Parameter Value Unit V DC Operating Supply Voltage -0.6 to 26.5 V S V Transient Supply Overvoltages, rise time = 10ms 34 V S delay time = 115ms V Input Voltages (EN, SDA, SCL) -0.6 to 9 V in V Output Control Voltage -0.6 to 6.0 V out T Operating Temperature Range -40 to 85 C op T Storage Temperature Range -40 to 150 C stg PIN CONNECTION (Top view) 15 REG4 14 BAT 13 REG5 12 REG3 11 REG2 10 REG1 9 VREF 8 GND 7 SCL Enable 6 5 SDA 4 HSD3 3 HSD2 2 BAT 1 HSD1 D99AU1006 THERMAL DATA Symbol Parameter Value Unit R Thermal Resistance Junction to case 2 C/W th j-case 2/8