A good PCB layout for the LM48100QMH/NOPB involves keeping the input and output traces short and wide, using a solid ground plane, and placing the decoupling capacitors close to the device. Additionally, it's recommended to use a star-ground configuration and to avoid routing high-frequency signals near the device.
To ensure proper biasing, make sure to connect the BYPASS pin to a suitable capacitor (e.g., 10uF) and connect the SHUTDOWN pin to a logic-level signal (e.g., 3.3V or 5V) to enable the device. Also, ensure the input voltage is within the recommended range (2.7V to 5.5V) and the output load is within the specified range (up to 100mA).
The recommended input capacitor value for the LM48100QMH/NOPB is 10uF to 22uF, with a voltage rating of at least 6.3V. A larger capacitor value can help improve the power supply rejection ratio (PSRR) and reduce output noise.
To reduce noise and ripple in the output of the LM48100QMH/NOPB, use a low-ESR output capacitor (e.g., 10uF to 22uF) and ensure the input voltage is well-regulated. Additionally, consider adding a noise-reducing component, such as a ferrite bead or a common-mode choke, in series with the output.
The maximum operating temperature range for the LM48100QMH/NOPB is -40°C to 125°C. However, the device's performance and reliability may degrade at extreme temperatures. It's recommended to operate the device within a temperature range of 0°C to 85°C for optimal performance.
LM48100QMH/NOPB datasheet
by Texas Instruments
