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SI-3025ZF Datasheet(Fiches technique) 1 Page - Allegro MicroSystems

Numéro de pièce SI-3025ZF
Description  High-Current, Low-Dropout, 2.5 V Regulator
Télécharger  8 Pages
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Fabricant  ALLEGRO [Allegro MicroSystems]
Site Internet  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

SI-3025ZF Datasheet(HTML) 1 Page - Allegro MicroSystems

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Designed to meet the high-current requirements in industrial and
consumer applications; embedded core, memory, or logic supplies; TVs,
VCRs, and office equipment, the SI-3025ZF voltage regulator offers the
reduced dropout voltage and low quiescent current essential for im-
proved efficiency. This device delivers a regulated output at up to 3 A.
Integrated thermal and overcurrent protection enhance overall system
reliability. Devices with an adjustable 1.2 ~ 5 V output or a 3.3 V fixed
output are also available.
Quiescent current does not increase significantly as the dropout
voltage is approached, an ideal feature in standby/resume power systems
where data integrity is crucial. Regulator accuracy and excellent
temperature characteristics are provided by a bandgap reference. An
LS-TTL/CMOS-compatible input gives the designer complete control
over power up, standby, or power down. A pnp pass element provides a
dropout voltage of less than 700 mV at 3 A of load current. Low output
voltages eliminate the need for expensive PWM buck converters. The
low dropout voltage permits more efficient regulation before output
regulation is lost.
This device is supplied in a fully molded TO-220-style 5-lead
flange-mounted , high power, isolated plastic package. A similar device
in a lower-power surface-mount plastic package is the SI-3025ZD.
FEATURES
■ 3 A Output Current at 2.5 V
■ 0.7 V Maximum Dropout Voltage at I
O = 3 A
■ 1 µA Maximum Standby Current
■ Remote Voltage Sensing
■ Foldback Current Limiting
■ Thermal Protection
APPLICATIONS
■ TVs, VCRs, Electronic Games
■ Embedded Core, Memory, or Logic Supplies
■ Printers and Other Office Equipment
■ Industrial Machinery
■ Secondary-Side Stabilization of Multi-Output SMPS
High-Current, Low-Dropout, 2.5 V Regulator
Always order by complete part number, e.g., SI-3025ZF .
ABSOLUTE MAXIMUM RATINGS
Input Voltage, V
I . . . . . . . . . . . . .
10 V
Output Current, I
O . . . . . . . . . . . . .
3 A*
Enable Input Voltage, V
E . . . . . . . .
6 V
Junction Temperature, T
J . . . .
+125°C
Storage Temperature Range,
T
S . . . . . . . . . . . .
-40°C to +125°C
* Output current rating is limited by input
voltage, duty cycle, and ambient tempera-
ture. Under any set of conditions, do not
exceed a junction temperature of +125°C.
SI-3025ZF
Linear
Regulators
Sanken Power Devices
from Allegro MicroSystems


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