The recommended input capacitor value is 1uF to 10uF, depending on the input voltage and output current requirements. A larger capacitor value can help to reduce input voltage ripple and improve output voltage regulation.
To ensure stability, make sure to follow the recommended PCB layout guidelines, use a low-ESR output capacitor, and add a 1nF to 10nF capacitor between the FB pin and GND. Additionally, ensure that the input voltage is within the recommended range and the output current is within the specified limits.
The maximum output current capability of the MAX890LESA+T is 1.5A. However, the actual output current capability may be limited by the input voltage, output voltage, and thermal considerations. It's recommended to check the datasheet and application notes for more information.
The MAX890LESA+T is rated for operation up to 125°C. However, the device's performance and reliability may be affected at high temperatures. It's recommended to check the datasheet and application notes for thermal derating and other considerations.
The output voltage of the MAX890LESA+T can be adjusted by using a resistive divider network between the output and the FB pin. The recommended resistive divider ratio is 1:1 to 1:3. A higher resistive divider ratio can provide a higher output voltage, but may affect the output voltage accuracy and stability.
MAX890LESA+T datasheet
by Maxim Integrated Products
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