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SI-3025KM Datasheet(Fiches technique) 5 Page - Allegro MicroSystems

Numéro de pièce SI-3025KM
Description  1 A, Low-Dropout, 2.5 V Regulator
Télécharger  9 Pages
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Fabricant  ALLEGRO [Allegro MicroSystems]
Site Internet  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

SI-3025KM Datasheet(HTML) 5 Page - Allegro MicroSystems

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SI-3025KM
1 A, Low-Dropout,
2.5 V Regulator
www.allegromicro.com
Linear
Regulators
5
APPLICATIONS INFORMATION
Input Capacitor (C
I, ≥22 µF). This is necessary either
when the input line includes inductance or when the wiring
is long.
Output Capacitor (C
O, ≥22 µF). This device is designed
for use with a very low ESR output capacitor such as a
ceramic capacitor. Output oscillation may occur with an
aluminum capacitor at low temperatures.
ENABLE Input. The ENABLE (control) input features
an internal pull-down resistor. Leaving this input open
causes the output to turn off.
Parallel Operation. Parallel operation to increase load
current is not permitted.
TYPICAL CHARACTERISTICS (cont.)
(VI = 3.3 V, TA = 25°C)
GND Pin Current
Increased Output Voltage. The output voltage (V
O)
may be increased by inserting a resistor (R
EXT) between
SENSE and OUTPUT. The current flowing into SENSE is
typically 90 µA ±30%. To minimize the effect of I
SENSE
and temperature on R
EXT, it is recommended that a 10 kΩ
resistor be added between SENSE and GND to increase the
current in R
EXT. The value of REXT is then
R
EXT = (VO – 2.5) × 10
6
/300


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