The MAX3385ECAP requires careful layout and routing to minimize noise and ensure optimal performance. Maxim Integrated provides a layout guide in the application note AN4341, which recommends keeping the input and output traces short and separate, using a solid ground plane, and avoiding vias under the device.
The MAX3385ECAP has an adjustable output voltage range of 1.25V to 5.5V. To select the correct output voltage, determine the required voltage for your load and adjust the feedback resistors (R1 and R2) according to the formula provided in the datasheet. Additionally, consider the input voltage, output current, and desired output voltage tolerance when selecting the output voltage.
The MAX3385ECAP has an absolute maximum input voltage rating of 6.5V. However, the recommended input voltage range is 2.7V to 5.5V. Operating the device above the recommended input voltage range may reduce its reliability and lifespan.
To ensure stability and prevent oscillation, follow the recommended layout and routing guidelines, use a sufficient output capacitor (at least 10uF), and ensure the input capacitor is properly sized and placed. Additionally, avoid using capacitors with high equivalent series resistance (ESR) and ensure the output voltage is within the recommended range.
The MAX3385ECAP has a maximum output current rating of 150mA. However, the actual output current capability may be limited by the input voltage, output voltage, and thermal considerations. Be sure to check the power dissipation and thermal calculations to ensure the device can deliver the required output current.
MAX3385ECAP datasheet
by Maxim Integrated Products
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