A good PCB layout is crucial for the TEA1738T/N1,118. NXP recommends a 4-layer PCB with a solid ground plane, and the use of vias to connect the top and bottom layers. The datasheet provides a recommended layout, but it's essential to follow good PCB design practices to minimize noise and ensure proper operation.
The inductor value depends on the input voltage, output voltage, and switching frequency. A good starting point is to use the inductor value calculation formula provided in the datasheet. Additionally, consider the inductor's saturation current, DC resistance, and core material to ensure it can handle the required current and minimize losses.
The maximum input voltage for the TEA1738T/N1,118 is 30V. However, it's recommended to operate the device within the specified input voltage range (7V to 24V) to ensure reliable operation and minimize the risk of damage.
The TEA1738T/N1,118 has a built-in OVP feature that can be enabled by connecting the OVP pin to a voltage divider network. The OVP threshold is set by the voltage divider ratio. It's essential to follow the datasheet guidelines and application notes to implement OVP correctly.
The EN (enable) pin is used to enable or disable the device. When the EN pin is pulled high, the device is enabled, and when it's pulled low, the device is disabled. This pin can be used to implement power sequencing or to shut down the device when not in use.
TEA1738T/N1,118 datasheet
by NXP Semiconductors
