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Axelite Confidential Materials, do not copy or distribute without written consent.

Rev.1.4 Oct.16, 2019

AX3161

PCB Layout Recommendations

AX3161

TO263-5L

1

2

3

4

5

C2

C1

R2

D1

L1

C6

C3

R1

C5

GND

VIN

GND

VOUT

1. Connect the C1 and C2 VIN bypass capacitor next to the VCC pin with a short return to the

VSS pin.

2. Keep the SW traces as short as is practically possible as these carry high peak currents to

decrease the EMI issue.

3. Carefully connect the noise sensitive signals such as FB as close to the IC as practically

possible.