A good PCB layout for the LM4140BCM-1.0/NOPB involves keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing trace lengths and widths to reduce noise and parasitic inductance.
To ensure stability, ensure that the output capacitor is within the recommended range, the input voltage is within the specified range, and the device is operated within the recommended temperature range. Additionally, a minimum ESR (Equivalent Series Resistance) of 0.1 ohms is recommended for the output capacitor.
The maximum allowed voltage drop across the LM4140BCM-1.0/NOPB is 1.5V. Exceeding this voltage drop may affect the device's performance and reliability.
The LM4140BCM-1.0/NOPB is rated for operation up to 125°C. However, the device's performance and reliability may degrade at high temperatures. It is recommended to derate the device's performance and consider thermal management techniques to ensure reliable operation.
To minimize noise sensitivity, use a low-ESR output capacitor, keep the input and output capacitors close to the device, and use a solid ground plane. Additionally, consider using noise-reducing techniques such as shielding and filtering.
LM4140BCM-1.0/NOPB datasheet
by Texas Instruments
