A 4-layer PCB with a solid ground plane and thermal vias is recommended. The device should be placed near a thermal pad or a heat sink to dissipate heat efficiently.
Ensure that the input voltage is within the recommended range, and the output capacitor is of sufficient value and type (e.g., X5R or X7R ceramic). Also, minimize the distance between the output capacitor and the device.
The maximum allowable ripple voltage is 10% of the input voltage. Exceeding this may affect the device's stability and performance.
While the datasheet recommends a specific inductor value and type, you can use a different one if it meets the required inductance and current rating. However, this may affect the device's performance and efficiency.
Check that the EN pin is properly connected and driven. Ensure that the voltage on the EN pin is within the recommended range (typically 0 to VCC). Also, verify that the EN pin is not floating or shorted to GND or VCC.
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RT9193-33GQW Overview
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