L387AH Datasheet, PDF (1/6 Pages) STMicroelectronics – VERY LOW DROP 5V REGULATOR WITH RESET

®
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
t(s) ^{The L387A is a very low drop voltage regulator in}
a Pentawatt^® package specially designed to pro-
c _{vide stabilized 5V supplies in consumer and in-}
u _{dustrial applications. Thanks to its very low in-}
d _{put/output voltage drop this device is very useful}
ro in battery powered equipment, reducing con-
P sumption and prolonging battery life. A reset out-
te ^{put makes the L387A particularly suitable for mi-}
croprocessor systems. This output provides a re-
le _{set signal when power is applied (after an exter-}
o _{nal programmable delay) and goes low when}
bs _{ABSOLUTE MAXIMUM RATINGS}
- ^O _Symbol
t(s) ^Vi
T_j, T_stg
Parameter
D.C. Input Voltage
Junction and Storage Temperature Range
Pentawatt^®
ORDERING NUMBER : L387A
power is removed, inhibiting the microprocessor.
An hysteresis on reset delay capacitor raises the
immunity to the ground noise.
Value
Unit
35
V
–55 to 150
°C
Obsolete ^{Produc APPLICATION CIRCUIT}
* Min 33 µF and max. ESR ≤ 3 Ω over temperature range.
July 2003
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