The recommended layout for the TPS3779BDBVR involves placing the input capacitor (CIN) close to the VIN pin, and the output capacitor (COUT) close to the VOUT pin. The power traces should be wide and short, and the ground plane should be solid and unbroken. Additionally, the device should be placed away from high-current carrying traces and noise sources.
The input capacitor (CIN) should be a low-ESR ceramic capacitor with a value of 1-10uF, and the output capacitor (COUT) should be a low-ESR ceramic capacitor with a value of 1-22uF. The capacitor values and types should be chosen based on the specific application requirements, such as output voltage, output current, and ripple voltage.
The TPS3779BDBVR can handle input voltages up to 18V, but it is recommended to operate the device within the specified input voltage range of 2.7V to 15V to ensure optimal performance and reliability.
The output voltage of the TPS3779BDBVR can be adjusted by connecting a resistive divider network between the VOUT pin and the GND pin, and connecting the feedback pin (FB) to the center tap of the divider network. The output voltage can be calculated using the formula: VOUT = 0.8V x (R1 + R2) / R2, where R1 and R2 are the resistors in the divider network.
The TPS3779BDBVR can deliver output currents up to 1A, but the maximum output current is dependent on the input voltage, output voltage, and ambient temperature. It is recommended to check the device's thermal performance and power dissipation to ensure reliable operation.
TPS3779BDBVR datasheet
by Texas Instruments
