L4938E 데이터 시트보기 (PDF) - STMicroelectronics

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L4938E

ADVANCED VOLTAGE REGULATOR

STMicroelectronics 

L4938E - L4938ED - L4938EPD

ABSOLUTE MAXIMUM RATINGS

Symbol

VINDC

VINTR

IO

VSI

ISI

VEN

IEN

VRES , VSO

IRES , ISO

PO

Tstg

Tj

TJSD

Parameter

DC Operating Supply Voltage

Transient Operating Supply Voltage (T < 400ms)

Output Current

Sense Input Voltage (Voltage Forced) (note 2)

Sense Input Current (Current Forced) (note 2)

Enable Input Voltage (Voltage Forced) (note 2)

Sense Input Current (Current Forced) (note 2)

Output Voltages

Output Currents (Output Low)

Power Dissipation at Tamb = 80°C (note 3)

Powerdip 12+2+2

Storage Temperature

Operating Junction Temperature

Thermal shutdown junction temperature Output 2 will shut-down

typically at Tj 10K lower than output 1

Note 1: The circuit is ESD protected according to MIL-STD-883C

Note 2: Current forced means voltage unlimited but current limited to the specified value

Voltage forced means voltage limi ted to the specified valueswhile the current is not limited

Note 3: Typical value soldered on a PC board with 8cm2 copper ground plane (35mm thick).

Value

28

-14 to 40

internally limited

-20 to 20

±1

-20 to 20

±1

-0.3 to 20

5

875

-65 to 150

-40 to 150

165

BLOCK DIAGRAM

Unit

V

V

V

mA

V

mA

V

mA

mW

°C

°C

°C

VS1

VS2

EN

1.23V

REG1

REG2

PR

RESET

SI

1.23V

SENSE

2/12

1.23V

REFERENCE

1.23V

OUT1

OUT2

ADJ

1.4V

CT

RES

SO

GND

D94AT074A

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