AN_SY8088
AN_SY8088 Rev. 0.1 Silergy Corp. Confidential- Prepared for Customer Use Only 7
4) The components R1 and R2, and the trace
connecting to the FB pin must NOT be adjacent to the
LX net on the PCB layout to avoid the noise problem.
5) If the system chip interfacing with the EN pin has a
high impedance state at shutdown mode and the IN pin
is connected directly to a power source such as a LiIon
battery, it is desirable to add a pull down 1Mohm
resistor between the EN and GND pins to prevent the
noise from falsely turning on the regulator at shutdown
mode.
