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L4959
MULTIFUNCTION VOLTAGE REGULATOR FOR HOME AUDIO
L4959MULTIFUNCTION VOLTAGE REGULATOR FOR HOME AUDIO
4 OUTPUTS:
12V (1.3A); 12V (0.8A); 8.6V (0.6A); 5.6V
(0.25A) STANDBY
OUT1 12V(a), OUT2 12V(b) AND OUT3 8.6V
WITH INDEPENDENT ENABLE CONTROL
FOR STAND-BY MODE
SHORT-CIRCUIT PROTECTION TO GROUND
THERMAL SHUTDOWN
DESCRIPTIONThe L4959 is a monolithic Multifunction Voltage
Regulator, designed mainly for supplying Home
Audio systems. The L4959 contains one un-
switched linear 5.6V regulator for Micro, two
switched regulators 8.6V and 12V, suitable to
feed CD or CD players and LED, Signal Process.
An additional 12V regulator for Solenoid Motor an
CD_TRAY Driven is also available.
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
QUICK REFERENCE DATA
PIN CONNECTION (Top view)
PIN DESCRIPTION
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THERMAL DATA
ELECTRICAL CHARACTERISTICS (VS = 18V, Tcase = 25°C, unless otherwise specified.)5.6V/250mA OUTPUT VOLTAGE
8.6V/0.6A SWITCHED OUTPUT VOLTAGE
12V/0.8A SWITCHED OUTPUT VOLTAGE
12V/1.3A SWITCHED OUTPUT VOLTAGE
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Figure 2: PCB and Components layout of the Figure 1.
Figure 1: Application and Test Circuit.
ELECTRICAL CHARACTERISTICS (continued)(*) The max value is limited by the power dissipation
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. consequences
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is
granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are
subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products
are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics
© 1999 STMicroelectronics – Printed in Italy – All Rights Reserved
STMicroelectronics GROUP OF COMPANIES
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