To minimize noise and ensure optimal performance, it is recommended to follow a star-grounding scheme, keep analog and digital grounds separate, and use a solid ground plane. Additionally, keep the input and output traces short and away from each other, and use a low-ESR capacitor for the output filter.
Choose an output capacitor with a low equivalent series resistance (ESR) and a high ripple current rating. A ceramic capacitor with an X5R or X7R dielectric is recommended. The output capacitor value should be at least 10uF, but a larger value may be needed depending on the output current and ripple requirements.
The MAX739EWE+ can handle an input voltage up to 18V, but it is recommended to keep the input voltage below 15V to ensure reliable operation and minimize power dissipation.
The output voltage of the MAX739EWE+ can be adjusted by using a resistive divider network between the output and the ADJ pin. The output voltage can be calculated using the formula: Vout = 1.25 x (1 + R1/R2), where R1 and R2 are the resistors in the divider network.
The MAX739EWE+ can deliver up to 3A of output current, but the maximum output current may be limited by the input voltage, output voltage, and thermal considerations. It is recommended to check the thermal performance and power dissipation of the device under the specific operating conditions.
MAX739EWE+ datasheet
by Maxim Integrated Products
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