Texas Instruments provides a recommended PCB layout in the datasheet, but it's also important to follow general high-frequency PCB design guidelines, such as keeping the input and output traces short and away from noise sources, and using a solid ground plane to reduce EMI.
To ensure stability, make sure to follow the recommended component values and PCB layout, and also consider the output capacitor's ESR (Equivalent Series Resistance) and ESL (Equivalent Series Inductance) when selecting the output capacitor. Additionally, a minimum of 10uF output capacitance is recommended.
The LM3554 can handle a maximum input voltage of 42V, but it's recommended to operate within the specified input voltage range of 6.5V to 36V for optimal performance and reliability.
The LM3554 is rated for operation up to 125°C, but it's important to consider the derating of the output current and voltage regulation performance at high temperatures. Additionally, ensure that the PCB and surrounding components can also operate within the desired temperature range.
The output voltage ripple can be calculated using the formula: ΔVout = (Iout * ESL) / (Cout * fsw), where Iout is the output current, ESL is the output capacitor's ESL, Cout is the output capacitance, and fsw is the switching frequency. The datasheet provides more information on how to calculate the output voltage ripple.
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
LM3554TMX/NOPB Overview
Use the download button to access the LM3554TMX/NOPB schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like LM355,
or try a keyword search, such as Display Drivers
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.
