S P X2 9 4 0
1A Low Dropout Voltage Regulator
August 2009
Rev. 2.0.0
GENERAL DESCRIPTION
The SPX2940 is a 1A, accurate voltage
regulators with a low drop out voltage of
280mV (typical) at 1A.
These regulators are specifically designed for
low voltage applications that require a low
dropout voltage and a fast transient response.
They are fully fault protected against over-
current, reverse battery, and positive and
negative voltage transients.
The SPX2940 is offered in 3-pin TO-220 & TO-
263 packages. For a 3A version, refer to the
SPX29300 data sheet.
APPLICATIONS
•
Power Supplies
•
LCD Monitors
•
Portable Instrumentation
•
Medical and Industrial Equipments
FEATURES
•
Guaranteed 1.5A Peak Current
•
Low Quiescent Current
•
Low Dropout Voltage of 280mV at 1A
•
Extremely Tight Load and Line
Regulation
•
Extremely Fast Transient Response
•
Reverse-battery Protection
•
Internal Thermal Protection
•
Internal Short Circuit Current Limit
•
Replacement for LM2940, MIC2940A,
AS2940
•
Standard TO-220 and TO-263 packages
TYPICAL APPLICATION DIAGRAM
Fig. 1: SPX2940 Application Diagram – Fixed Output Linear Regulator
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 – Fax. +1 510 668-7001
EXAR [ EXAR CORPORATION ]
