®
L5950
MULTIPLE MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO
5 REGULATORS 10V (350mA); 8.5V (175mA); 5V (350mA); 5V ...
®
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...