UD05124

Advance

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

8 of 9

www.unisonic.com.tw

QW-R115-038.c

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APPLICATION INFORMATION (Cont.)

PCB Layout Recommendation

The device’s performance and stability are dramatically affected by PCB layout. It is recommended to follow these

general guidelines shown as below:

1. Place the input capacitors and output capacitors as close to the device as possible. The traces which connect to

these capacitors should be as short and wide as possible to minimize parasitic inductance and resistance.

2.Place feedback resistors close to the FB pin.

3. Keep the sensitive signal (FB) away from the switching signal (LX).

4. Multi-layer PCB design is recommended.