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L4938E| Datasheet

By datasheet - April 3rd, 2008

L4938E, L4938ED, L4938ED013TR, L4938EPD, L4938EPD13TR

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L4938E/ED L4938EPD
ADVANCED VOLTAGE REGULATOR

ENABLE AND SENSE INPUTS (EN, SI) PROTECTED AGAINST NEGATIVE TRANSIENTS DOWN TO -5V RESET THRESHOLD ADJUSTABLE FROM 3.8 TO 4.7V EXTREMELY LOW QUIESCENT CURRENT, 65uA (LESS THAN 90uA) IN STANDBY MODE OPERATING DC SUPPLY VOLTAGE RANGE 5V - 28V OPERATING TRANSIENT SUPPLY VOLTAGE UP TO 40V HIGH PRECISION STANDBY OUTPUT VOLTAGE 5V 1% WITH 100mA CURRENT CAPABILITY OUTPUT 2 VOLTAGE 5V 2% WITH 400mA CURRENT CAPABILITY (ADJ WIRED TO VOUT2) OUTPUT 2 VOLTAGE ADJUSTABLE BY EXTERNAL VOLTAGE DIVIDER OUTPUT 2 DISABLE FUNCTION FOR STANDBY MODE PIN CONNECTIONS

DIP (12+2+2)

SO20 (12+4+4)

PowerSO20

ORDERING NUMBERS: L4938E (DIP) L4938ED (SO) L4938EPD (PSO)

DESCRIPTION The L4938E/ED/EPD is a monolithic integrated dual voltage regulator with two very low dropout outputs and additional functions as power-on reset and input voltage sense. It is designed for supplying the microcomputer controlled systems especially in automotive applications.

PR

1 2 3 4 5 6 7 8 9 10
D94AT076A

20 19 18 17 16 15 14 13 12 11

SI VS1 VS2 GND GND GND GND N.C. OUT2 ADJ

PR CT EN GND GND RES SO OUT1

1 2 3 4 5 6 7 8
D94AT075A

16 15 14 13 12 11 10 9

SI VS1 VS2 GND GND N.C. OUT2 ADJ

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

1 2 3 4 5 6 7 8 9 10
L4938EPD

20 19 18 17 16 15 14 13 12 11

GND N.C. OUT2 ADJ OUT1 SO RESET N.C. N.C. GND

CT EN GND GND GND GND RES SO OUT1

DIP (12+2+2)

SO (12+4+4)

PowerSO20

February 1999

1/12


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