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L5950
MULTIPLE MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO
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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 CAPACI-
TORS ARE REQUIRED
STAND BY MODE CONTROLLED BY 3 IN-
PUT PINS:
ENABLE FOR REG2 AND REG3,
" BUS FOR REG1, REG4, REG5, HSD1,
HSD2, HSD3
INDIVIDUAL THERMAL SHUTDOWN
INDEPENDENT CURRENT LIMITING
SHORT CIRCUIT PROTECTION
LOAD DUMP PROTECTION AND OVERVOL-
TAGE SHUTDOWN
ESD PROTECTED
BLOCK DIAGRAM
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 IZC
bus and the Enable input.
External protection must be provided for reverse
battery protection.
VOLTAGE
REFERENCE
8.5 & 5V
ENABLE ENABLE
PC OUTPUT
CONTROL
CURRENT
PROTECTION
INDIVIDUAL
THERMAL
SHUTDOWN
OVERVOLTAGE
PROTECTION
10V 350mA REGI
8.5V 175mA REG2
5V 350mA REG3
8VI1OV 1A REG4
5V 250mA REG5
DRIVE 1
DRIVE 2
450mA HSD2
DRIVE 3
450mA HSD3
D99A U 1 002
March 2001
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
Vs DC Operating Supply Voltage -0.6 to 26.5 V
Vs Transient Supply Overvoltages, rise time = 10ms 34 V
delay time = 115ms
Vin Input Voltages (EN, SDA, SCL) -O.6 to 9 V
Vout Output Control Voltage -0.6 to 6.0 V
Top Operating Temperature Range -40 to 85 I
Tstg Storage Temperature Range -40 to 150 I
PIN CONNECTION
11 REG2
9 VREF
6 Enable
4 HSDS
3 HSD2
1 HSD1
099AU1006
THERMAL DATA
Symbol Parameter Value Unit
Rth j-case Thermal Resistance Junction-case 2 °CNV
