Texas Instruments provides a recommended PCB layout in the datasheet, but it's also recommended to follow general guidelines for high-frequency PCB design, such as using a solid ground plane, minimizing trace lengths, and using decoupling capacitors close to the device.
The output capacitor selection depends on the output voltage, output current, and desired ripple voltage. A general rule of thumb is to choose a capacitor with a capacitance value of at least 10uF and a voltage rating of at least 1.5 times the output voltage. Additionally, consider the capacitor's ESR (Equivalent Series Resistance) and ESL (Equivalent Series Inductance) to ensure it can handle the output current and frequency.
The maximum input voltage rating for the TPS3840DL29DBVRQ1 is 5.5V, but it's recommended to operate the device within the recommended input voltage range of 2.7V to 5.5V to ensure reliable operation and to prevent damage to the device.
The TPS3840DL29DBVRQ1 has a built-in OVP feature that can be enabled by connecting the OVP pin to a voltage divider network. The voltage divider network should be designed to trigger the OVP threshold (typically 1.2V) when the output voltage exceeds the desired maximum value. Additionally, consider adding external components such as a zener diode or a voltage supervisor to provide additional OVP protection.
The thermal derating for the TPS3840DL29DBVRQ1 is typically specified in the datasheet. To calculate the maximum ambient temperature, use the following formula: T_Ambient = T_Junction - (P_Dissipation x R_θJA), where T_Junction is the maximum junction temperature (typically 150°C), P_Dissipation is the power dissipation, and R_θJA is the thermal resistance from junction to ambient. Consult the datasheet for specific values and calculations.
Trust Checks
This model has been provided by community users.
Community Provided
This model has been verified by system checks.
System Verified
This model has been reviewed by community users.
Community Approved
Sponsored
TPS3840DL29DBVRQ1 Overview
Use the download button to access the TPS3840DL29DBVRQ1 schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like TPS38,
or try a keyword search, such as Power Management Circuits
About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
