Union Semiconductor UM3501EVB, User Manual, Page: 6 / 10

UM3501 EV Board User’s Guide
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Fig 2.1 UM3501 waveform diagram (V
IN
=3.6V, V
OUT
=1.8V, I
LOAD
=300mA)
2.1 Power Supply
UM3501's input supply voltage range from 2.5V – 5.5V, you need to confirm there is
sufficient margin with the current limit when use a DC source to supply the device.
Input power cable should be thicker to reduce the loss of input voltage when the load
current is large.
2.2 Enable
EN jumper should be set to ON to enable the UM3501.EN jumper set to OFF to shut
down the device.
2.3 Output Setting
VOUT
SW