9 Power Supply Recommendations

The TPS22998 device is designed to operate with a VIN range of 0.2 V to 5.5 V. Regulate the VIN power supply

well and place as close to the device terminal as possible. The power supply must be able to withstand all

the supply voltage from dipping when the switch is turned on. In cases where the power supply is slow to

respond to a large transient current or large load current step, additional bulk capacitance can be required on the

input.

10 Layout

10.1 Layout Guidelines

For best performance, all traces must be as short as possible. To be most effective, place the input and output

capacitors close to the device to minimize the effects that parasitic trace inductances can have on normal

operation. Using wide traces for VIN, VOUT, and GND helps minimize the parasitic electrical effects.

10.2 Layout Example

Figure 10-1. TPS22998 Layout Example

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TPS22998

SLVSG05 – OCTOBER 2021

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