DIO6913

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DIO6913• V1.6

Layout design:

The layout design of DIO6913 regulator is relatively simple. For the best efficiency and minimum noise

problems, place the following components close to the IC: CIN, L, R1 and R2.

1) Maximize the PCB copper area connected to the GND pin to achieve the best thermal and noise

performance. If the board space allows, a ground plane is highly desirable.

2) CIN must be close to IN and GND pins. The loop area formed by CIN and GND must be minimized.

3) The PCB copper area associated with LX pin must be minimized to avoid the potential noise problem.

4) The components R1 and R2, and the trace connected 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 Li-Ion battery, it is desirable to add a pull-down 1 MΩ

resistor between the EN and GND pins to prevent the noise from falsely turning on the regulator at shutdown

mode.