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The inner multi-level and multi-group LDO combined with solid-state
capacitor, which can filter the superposed noise in the power supply. All the
circuit units are supplied by the low or ultra-low noise LDO without DC/DC
circuit to avoid high frequency switching noise. Even if using USB bus power
supply, it can also maintain the high quality for the internal power supply.
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With the external power supply port, convenient to upgrade the external
linear power supply. The device will auto-disconnect the USB bus power
supply after connected the external power supply, and can be connected to
the devices which do not support power output, such as mobile phone.
Summary
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