Texas Instruments recommends a 4-layer PCB with a solid ground plane, and to keep the analog and digital signals separate. Additionally, use a ferrite bead or a 10-ohm resistor in series with the VCC pin to reduce high-frequency noise.
To ensure accurate voltage regulation, use a high-quality input capacitor (e.g., 10uF ceramic) and a low-ESR output capacitor (e.g., 22uF ceramic). Also, keep the input voltage within the recommended range (2.7V to 5.5V) and avoid high-frequency noise on the input lines.
The DS3487MX can deliver up to 500mA of output current, but this is dependent on the input voltage, output voltage, and ambient temperature. Be sure to check the datasheet for the specific output current capability under your specific operating conditions.
The DS3487MX has a fixed output voltage option, but you can also use an external resistor divider network to set the output voltage. Use the formula provided in the datasheet to calculate the required resistor values for your desired output voltage.
Yes, the DS3487MX is AEC-Q100 qualified, making it suitable for automotive applications. However, be sure to check the specific requirements of your application, such as operating temperature range, voltage transients, and EMI immunity.
DS3487MX datasheet
by Texas Instruments
