The recommended layout and placement for the TPS3809L30DBVR involves placing the device close to the power source, using a solid ground plane, and keeping the input and output capacitors close to the device. Additionally, it is recommended to use a low-ESR capacitor for the input capacitor and to minimize the length of the traces between the device and the capacitors.
The choice of input and output capacitors for the TPS3809L30DBVR depends on the specific application requirements. In general, a low-ESR capacitor with a value of 1-10uF is recommended for the input capacitor, while a capacitor with a value of 1-22uF is recommended for the output capacitor. The capacitor voltage rating should be at least 1.5 times the maximum input voltage.
The TPS3809L30DBVR can handle a maximum input voltage of 30V. However, it is recommended to operate the device within the recommended input voltage range of 2.7V to 18V to ensure optimal performance and reliability.
To ensure the stability of the TPS3809L30DBVR, it is recommended to follow the recommended layout and placement guidelines, use a low-ESR input capacitor, and ensure that the output capacitor is properly sized for the specific application. Additionally, it is recommended to add a 1uF ceramic capacitor between the EN pin and GND to improve stability.
The typical startup time for the TPS3809L30DBVR is around 1-2ms. However, this can vary depending on the specific application and the value of the input capacitor.
TPS3809L30DBVR datasheet
by Texas Instruments
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