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SI-3005KWM Datasheet(PDF) 1 Page - Allegro MicroSystems

Part No. SI-3005KWM
Description  1A, Low-Dropout, Dual Output, 1.5V & 1.8V Regulator
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Maker  ALLEGRO [Allegro MicroSystems]
Homepage  http://www.allegromicro.com
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SI-3005KWM 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-3005KWM voltage regulator offers
the reduced dropout voltage and low quiescent current essential for
improved efficiency. This device delivers dual regulated outputs at up to
1 A. Integrated thermal and overcurrent protection enhance overall
system reliability. Devices with other output voltages 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 Channel 1 (1.8 V) power up, standby, or power down. A pnp pass
element provides a dropout voltage of less than 600 mV at 1 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 5-lead TO-252 style surface-mount
plastic package with ground tab to provide a low-resistance path for
maximum heat dissipation.
FEATURES
■ 1 A Output Current per Channel
■ 0.6 V Maximum Dropout Voltage at I
O = 1 A
■ Fast Transient Response
■ 1.5 mA Maximum Standby Current
■ Foldback Current Limiting
■ Ground Tab for Superior Heat Dissipation
■ 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
1 A, Low-Dropout, Dual Output, 1.5 V & 1.8 V Regulator
Always order by complete part number, e.g., SI-3005KWM-TL ,
where “-TL” indicates tape and reel.
ABSOLUTE MAXIMUM RATINGS
Input Voltage, V
I . . . . . . . . . . . . .
18 V
Output Current, I
O . . . . . . . . . . . . .
1 A*
Enable Input Voltage, V
E . . . . . . .
6.0 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-3005KWM
Sanken Power Devices
from Allegro MicroSystems
Linear
Regulators
PRELIMINARY ISSUE
Subject to change without notice
May 16, 2005


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