®
SPX2815
1.5A Low DropoutVoltage Regulator
APPLICATIONS
FEATURES
■ Desktop PC's Servers
■ Powering VGA and Sound Cards
■ Cordless Phones
■ Guaranteed 1.5A Output Current
■ Three Terminal Adjustable or Fixed
2.5V, 3.3V and 5.0V
■ Low Quiescent Current
■ Battery Chargers
■ Low Dropout Voltage of 1.1V at 1.5A
■ 0.1% Line and 0.1% Load Regulation
■ Stable with 10uF Ceramic Capacitor
■ Overcurrent and Thermal Protection
■ Available Packages: TO-252,
TO-220, and TO-263
■ Adjustable Power Supplies
■ Portable Instrumentation
■ SMPS Post-Regulator
■ Constant Current Regulators
■ Disk Drives
■ Similar to Industry Standard LT1086/
Refer to Page 5 for Pinouts
LT1586
DESCRIPTION
The SPX2815 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 SPX2815 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. SPX2815 is available in adjustable
or fixed 2.5V, 3.3V and 5.0V output voltages.
TheSPX2815isofferedinseveral3-pinsurfacemountpackages:TO-252,TO-220andTO-263.
An output capacitor of 10µF ceramic or tantalum provides unconditional stability.
FUNCTIONAL DIAGRAM (Adjustable)
V
IN
+
-
Current Limit
V
OUT
ICL
_
AMP
+
1.25V
V
REF
+
–
Thermal Limit
ADJ/GND
–
~
IADJ 50µA
I TL
Date: 5/17/04
SPX2815 1.5A Low Dropout Voltage Regulator
© Copyright 2004 Sipex Corporation
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