L387A| Datasheet

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L387A
VERY LOW DROP 5V REGULATOR WITH RESET

. . . . .

PRECISE OUTPUT VOLTAGE (5 V 4 %) VERY LOW DROPOUT VOLTAGE OUTPUT CURRENT IN EXCESS OF 500mA POWER-ON, POWER-OFF INFORMATION (RESET FUNCTION) HIGH NOISE IMMUNITY ON RESET DELAY CAPACITOR

DESCRIPTION The L387A is a very low drop voltage regulator in a Pentawatt package specially designed to provide stabilized 5V supplies in consumer and industrial applications. Thanks to its very low input/output voltage drop this device is very useful in battery powered equipment, reducing consumption and prolonging battery life. A reset output makes the L387A particularly suitable for microprocessor systems. This output provides a reset signal when power is applied (after an external programmable delay) and goes low when ABSOLUTE MAXIMUM RATINGS
Symbol Vi Tj, Tstg Parameter D.C. Input Voltage

Pentawatt

ORDERING NUMBER : L387A

Junction and Storage Temperature Range

APPLICATION CIRCUIT

bs O

let o

od Pr e

uc

(s) t

so Ob -

power is removed, inhibiting the microprocessor. An hysteresis on reset delay capacitor raises the immunity to the ground noise.

te le

ro P

uc d

s) t(

Value 35 55 to 150

Unit V C

* Min 33 uF and max. ESR 3 over temperature range.

July 2003

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L387A DATASHEET