Power Supply; Input Power Jack, J3; Input Power Supply - Digi Connect Wi-Wave 802.11 b/g Hardware Reference Manual

P o w e r s u p p l y
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Input power jack,
J3
Input power
supply
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The development board provides a 3.3V
power supply or an AC wall adapter supplies input power to the development board.
The required input voltage range is 9–30V
The input power jack, J3, is a barrel connector that accepts 9-30 VDC. The power
jack is labeled J3 on the development board. This figure schematically represents
the power jack's polarity:
Ground 9-30VDC +/- 5%
The output current of this regulator is limited to 2.4 amps and the Digi Connect Wi-
Wave 802.11 b/g module draws no more than 600mA. Using these values as a
guideline, and using an 80% efficiency for the switching regulator, the input power
supply should be rated to provide at least 3 watts of power.
The development board can use USB power as the power source for the
Important:
3.3V regulator. This is accomplished by simply connecting the USB
cable to the development board. However, Digi recommends using the
supplied AC wall adapter.
A B O U T T H E D E V E L O P M E N T B O A R D
switching power supply. Either a bench
DC
.
DC

Power supply

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