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,

I

HSD2, HSD3

INDIVIDUAL THERMAL SHUTDOWN

INDEPENDENT CURRENT LIMITING

SHORT CIRCUIT PROTECTION

LOAD DUMP PROTECTION AND OVERVOL-

TAGE SHUTDOWN

ESD PROTECTED

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 I

bus and the Enable input.

External protection must be provided for reverse

battery protection.

March 2001

®

VOLTAGE

REFERENCE

REG 1

10V 350mA

REG 2

8.5V 175mA

REG 3

5V 350mA

REG 4

8V/10V 1A

REG 5

5V 250mA

8.5 & 5V

ENABLE

PC OUTPUT

CONTROL

CURRENT

LIMIT

PROTECTION

LOGIC

INDIVIDUAL

THERMAL

SHUTDOWN

OVERVOLTAGE

PROTECTION

DRIVE 1

2A

DRIVE 2

450mA

DRIVE 3

450mA

REG1

REG2

REG3

REG4

REG5

HSD1

HSD2

HSD3

BAT

GND

VREF

ENABLE

SCL

SDA

D99AU1002

BLOCK DIAGRAM

Multiwatt15

L5950

MULTIPLE MULTIFUNCTION

VOLTAGE REGULATOR FOR CAR RADIO

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