Solved by
SPX1587
TM
3A Low Dropout Voltage Regulator
FEATURES
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Guaranteed 3A Output Current
■
Three Terminal Adjustable or Fixed
1.5V, 1.8V, 2.5V, 3.3V and 5.0V
■
Low Quiescent Current
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Low Dropout Voltage: 1.1V at 3A
■
Line Regulation: 0.1%
■
Load Regulation: 0.1%
■
Stable with 10uF Ceramic Capacitor
■
Overcurrent and Thermal Protection
■
Similar to Industry Standard LT1085/
LT1585
■
Available in RoHS Compliant, Lead Free
Packages: TO-252, TO-220, and TO-263
SPX1587
3 Pin TO-263
SPX1587
3 Pin TO-220
1
2
3
1
2
3
ADJ/GND V
OUT
V
IN
ADJ/GND V
OUT
V
IN
APPLICATIONS
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■
■
■
■
■
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Desktop PC's Servers
Powering VGA and Sound Cards
Cordless Phones
Battery Chargers
Adjustable Power Supplies
Portable Instrumentation
SMPS Post-Regulator
The SPX1587 is a low power positive-voltage regulator designed to satisfy moderate power requirements
with a cost effective, small footprint solution. This device is an excellent choice for use in battery-powered
applications and portable computers. The SPX1587 features very low quiescent current and a low dropout
voltage of 1.1V at a full load. As output current decreases, quiescent current flows into the load, increasing
efficiency. SPX1587 is available in adjustable or fixed 1.5V, 1.8V, 2.5V, 3.3V and 5.0V output voltages.
The SPX1587 is offered in several 3-pin surface mount packages: TO-252, TO-220 and TO-263. An output
capacitor of 10µF ceramic or tantalum provides unconditional stability.
DESCRIPTION
FUNCTIONAL DIAGRAM (Adjustable)
V
IN
Current Limit
+
-
V
OUT
I
CL
_
AMP
+ 1.25V
Thermal Limit
+
–
V
REF
ADJ/GND
I
ADJ
~ 50µA
–
© 2007 Sipex Corporation
Jun8-07 Rev D
I
TL
SPX587 Low-Dropout Voltage Regulator
SIPEX [ SIPEX CORPORATION ]
