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5.3.8
Power Supply For XE1401SK (JP13)
The XE1401SK power source can be chosen by JP13. The selected input source is regulated to 3.0V through the
on board voltage regulator U4. It supplies the XE1401, XE3006, radio module as well as the RS232 level shifter
and required glue logic.
JP13 Position
Description
BATTERY
3.2V DC Nominal from batteries regulated to 3.0V through U4
USB_5V
5V DC from USB port regulated to 3.0V and 3.3V through U4 and U5
DC voltage ( 4 – 10 V ) from the external power supply,
EXT_POWER
regulated to 3.0V through U4
OPEN
No power supply is selected, the XE1401SK is not power supplied
© Semtech 2006
20
Users Guide
XE1401SK Hardware
I
Regulated
max
200 mA
YES
200 mA
YES
200 mA
YES
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-
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