Alpha & Omega Semiconductor

AOZ1360

Applications Information

Input Capacitor Selection

Use a 1uF or larger capacitor for input bypassing. This will limit the input voltage drop during output transient

conditions. 1uF capacitor should be adequate for most applications; however, higher capacitor values will

further reduce the voltage drop. Place the bypass capacitor as close to the IN pins as feasibly possible.

Output Capacitor Selection

Use a 0.1uF or larger capacitor between the OUT and GND pins. The capacitance does not affect the turn on

slew rate; however, a larger capacitor will make the initial turn on transient smoother.

Power Dissipation Calculation

Calculate the power dissipation for normal load condition using the following equation:

2

The worst case power dissipation occurs when the load current hits the current limit due to over-current or short

circuit faults. The power dissipation under these conditions can be calculated using the following equation:

Layout Guidelines

Good PCB layout is important for improving the thermal and overall performance of AOZ1360. To optimize the

switch response time to output short-circuit conditions keep all traces as short as possible to reduce the effect of

unwanted parasitic inductance. Place the input and output bypass capacitors as close as possible to the IN and

OUT pins. The input and output PCB traces should be as wide as possible for the given PCB space. Use a

ground plane to enhance the power dissipation capability of the device.

AOZ1360AI (SO-8) Layout

AOZ1360DI (4x4 DFN) Layout

AOZ1360 Preliminary Data Sheet Rev0

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