The recommended layout for the TPS3779DDBVR involves placing the input capacitor (CIN) close to the VIN pin, and the output capacitor (COUT) close to the VOUT pin. Additionally, the device should be placed near the power source, and the output voltage sense lines should be routed away from the input voltage lines to minimize noise coupling.
The input capacitor (CIN) should have a low ESR and be rated for the input voltage. A ceramic capacitor with a value of 1-10uF is recommended. The output capacitor (COUT) should have a low ESR and be rated for the output voltage. A ceramic capacitor with a value of 1-22uF is recommended. The capacitor values can be adjusted based on the specific application requirements.
The maximum output current that the TPS3779DDBVR can deliver is 1.5A. However, the output current should be derated based on the ambient temperature and the input voltage to ensure reliable operation.
The output voltage of the TPS3779DDBVR can be adjusted by connecting a resistive divider network between the VOUT pin and the GND pin. The resistive divider network should be designed to provide a voltage feedback signal to the FB pin that is proportional to the desired output voltage.
The EN pin on the TPS3779DDBVR is an active-high enable input that allows the device to be turned on or off. When the EN pin is high, the device is enabled and operates normally. When the EN pin is low, the device is disabled and the output voltage is turned off.
TPS3779DDBVR datasheet
by Texas Instruments
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