SPX3940M3-L-5.0

The SPX3940M3-L-5.0 is one member of the SPX3940 series.The SPX3940M3-L-5.0 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 SPX3940M3-L-5.0 is offered in 3-pin SOT-223, TO-220 & TO-263 packages. For a 3A version, refer to the SPX29300 data sheet.

Features of the SPX3940M3-L-5.0 are:(1)guaranteed 1.5A peak current;(2)low quiescent current;(3)low dropout voltage of 280mV at 1A;(4)extremely tight load and line regulation;(5)extremely fast transient response;(6)reverse-battery protection;(7)internal thermal protection;(8)internal short circuit current limit.The output capacitor is needed to insure stability and minimize the output noise. The value of the capacitor varies with the load.  However, a minimum value of 10F aluminum capacitor will guarantee stability over all load conditions. A tantalum capacitor is recommended if a faster load transient response is needed.

The absolute maximum ratings of the SPX3940M3-L-5.0 can be summarized as:(1)lead temperature (soldering, 5 seconds):260°C;(2)storage temperature range :-65 to +150°C;(3)input voltage:16V;(4)operating junction temperature range:-40 to +125°C.Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others.The products described in this document are designed, developed and manufactured as contemplated for general use, including without limitation, ordinary industrial use, general office use, personal use, and household use, but are not designed, developed and manufactured as contemplated (1) for any use that includes fatal risks or dangers that, unless extremely high safety is secured, could have a serious effect to the public, and could lead directly to death, personal injury, severe physical damage or other loss (i.e., nuclear reaction control in nuclear facility, aircraft flight control, air traffic control, mass transport control, medical life support system, missile launch control in weapon system), or (2) for any use where chance of failure is intolerable (i.e., submersible repeater and artificial satellite).