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L4938N| Datasheet

By datasheet - April 3rd, 2008

L4938N, L4938ND, L4938ND013TR, L4938NPD, L4938NPD013TR

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L4938N/ND L4938NPD
DUAL MULTIFUNCTION VOLTAGE REGULATOR

. . . . . . . . . . . .

STANDBY OUTPUT VOLTAGE PRECISION 5V 2% OUTPUT 2 TRACKED TO THE STANDBY OUTPUT OUTPUT 2 DISABLE FUNCTION FOR STANDBY MODE VERY LOW QUIESCENT CURRENT, LESS THAN 250uA, IN STANDBY MODE OUTPUT 2 VOLTAGE SETTABLE FROM 5 TO 20V 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 EARLY WARNING OUTPUT FOR SUPPLY UNDERVOLTAGE THERMAL SHUTDOWN AND SHORT CIRCUIT PROTECTIONS

PowerDIP (12+2+2)

SO20 (12+4+4)

PowerSO20

ORDERING NUMBERS: L4938N (PDIP) L4938ND (SO) L4938NPD (PSO20)

DESCRIPTION The L4938N is a monolithic integrated dual voltage regulators with two very low dropout outputs and additional functions such as power-on reset and input voltage sense. They are designed for supplying microcomputer controlled systems specially in automotive applications.

PIN CONNECTION (top view)

POWERDIP

SO20

PowerSO20

N.C.

1 2 3 4 5 6 7 8 9 10
D93AT004

20 19 18 17 16 15 14 13 12 11

SI VS1 VS2 GND GND GND GND VO2 VO2 ADJ

N.C. CT EN GND GND RES SO VO1

1 2 3 4 5 6 7 8
D95AT156

16 15 14 13 12 11 10 9

SI VS1 VS2 GND GND VO2 VO2 ADJ

GND N.C. VS2 VS1 SI N.C. CT EN N.C. GND

1 2 3 4 5 6 7 8 9 10
D95AT169A

20 19 18 17 16 15 14 13 12 11

GND N.C. VO2 ADJ VO1 SO RESET N.C. N.C. GND

C7 EN GND GND GND GND RES SO VO1

April 1999

1/12

This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.


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