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L4937

DUAL MULTIFUNCTION VOLTAGE REGULATOR

STMicroelectronics 

®

L4937N

DUAL MULTIFUNCTION VOLTAGE REGULATOR

. STANDBYOUTPUT VOLTAGEPRECISION 5V

± 2%

. OUTPUT 2 TRACKED TOTHE STANDBY OUT-

PUT

. OUTPUT 2 DISABLE FUNCTION FOR

STANDBY MODE

. VERY LOW QUIESCENT CURRENT, LESS

THAN 250µA, IN STANDBY MODE

. OUTPUT CURRENTS : I01 = 50mA, I02 = 500mA

. VERY LOW DROPOUT (max 0.4V/0.6V)

. OPERATING TRANSIENT SUPPLY VOLTAGE

UP TO 40V

. POWER-ON RESET CIRCUIT SENSING THE

STANDBY OUTPUT VOLTAGE

. POWER-ON RESET DELAY PULSE DEFINED

BY THE EXTERNAL CAPACITOR

. THERMALSHUTDOWN AND SHORTCIRCUIT

Heptawatt

ORDERING NUMBER : L4937N

D ES CRIPT IO N

The L4937N is a monolithic integrated dual voltage

regulatorswith two very low dropout outputsand ad-

ditional functions such as power-on reset and input

voltage sense. It is designed for supplying micro-

computer controlled systems specially in automo-

PROTECTIONS

tive applications.

PIN CONNECTION (top view)

June 2000

1/9

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