Texas Instruments provides a recommended PCB layout in the datasheet, but it's also important to follow general best practices for switching regulator layouts, such as keeping the input and output capacitors close to the IC, using a solid ground plane, and minimizing trace lengths and widths.
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, adding a small ceramic capacitor (e.g. 10nF) between the VOUT and GND pins can help improve stability.
While the datasheet specifies a maximum input voltage of 42V, it's recommended to derate the input voltage to 40V or less to ensure reliable operation and to prevent damage to the IC.
The LM27341SD is rated for operation up to 125°C, but it's essential to consider the thermal design and ensure that the IC's junction temperature (TJ) does not exceed 125°C. This may require adding heat sinks, thermal vias, or other thermal management techniques to the PCB design.
The output voltage ripple can be estimated using the equation: 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. However, this is an approximate calculation, and actual ripple may vary depending on the specific application and component values.
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
LM27341SD/NOPB Overview
Use the download button to access the LM27341SD/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 LM273,
or try a keyword search, such as Switching Regulator or Controllers
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.
