UC-08-M31 EN R1.0 Power Supply 7
3.1 3.3V LDO Power Supply
VCC outputs 3.3 V voltage after passing through the LDO circuit to provide power to
UM982eb.
Figure 3-3 3.3V LDO Circuit
Notes:
The rated output current of LDO should be more than twice the maximum operating
current of UM982.
R32 is a series resistor placed at the input of the LDO, which is used for debugging. When
selecting the resistor, choose one with high rated power to ensure the current capability.
Here, a 0805 0-ohm resistor is selected.
R33 is a resistor connected in parallel with LDO. After removing R32 and soldering R33,
you can use VCC to power the module.
When using the LDO to power the module, you should consider the power
dissipation of the LDO.
To Next Page
Loading...