SPX2810 Datasheet, PDF (1/13 Pages) Sipex Corporation – 1A Low Dropout Voltage Regulator Adjustable & Fixed Output, Fast Response

®
SPX2810
1A Low Dropout Positive Linear Regulator
FEATURES
■ Guaranteed 1A Output
■ Three Terminal Adjustable or Fixed
2.5V, 3.0V and 3.3V
■ Low Quiescent Current
■ Low Dropout Voltage of 1.1V at Full Load
■ 0.2% Line and 0.3% Load Regulation
■ Voltage Temperature Stability 0.25%
■ Overcurrent and Thermal Protection
■ Available Packages: SOT-223,TO-252,
TO-220, and TO-263
APPLICATIONS
■ SCSI-II Active Terminator
■ Portable/Palm Top/Notebook
Computers
■ Battery Chargers
SPX2810
3 Pin TO-263
1 23
ADJ/GND ^VOUT ^VIN
Now Available in Lead Free Packaging
SPX2810 is 2% Accuracy
SPX2810A is 1% Accuracy
■ Disk Drives
■ Portable Consumer Equipment
■ Portable Instrumentation
■ SMPS Post-Regulator
DESCRIPTION
The SPX2810 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 SPX2810 has a very low
quiescent current and a low dropout voltage of 1.1V at full load. As output current decreases,
quiescent current flows into the load, increasing efficiency. SPX2810 is available in adjustable
or fixed 2.5V, 3.0V and 3.3V output voltages.
The SPX2810 is offered in several industry standard 3-pin surface mount packages: SOT-223,
TO-252, TO-220 and TO-263. An output capacitor of 10µF or larger, provides unconditionally
stability for most applications.
TYPICAL APPLICATION CIRCUITS
V_IN
IN
4.7µF ^{+ C}1
SPX2810
ADJ
I ADJ
50µA
V_OUT = V _REF (1+R ₂ /R₁) +I _ADJ R ₂
OUT
V_{REF R1}
V_OUT
C₂
R₂
Date: 5/25/04
SPX2810 1A Low Dropout Linear Regulator
1
© Copyright 2004 Sipex Corporation