The recommended input capacitor value is 1uF to 10uF, depending on the input voltage and output current requirements. A larger capacitor value can help reduce input voltage ripple and improve output voltage regulation.
To ensure the MAX738AEWE+ operates within its SOA, ensure that the input voltage, output current, and ambient temperature are within the recommended operating ranges specified in the datasheet. Additionally, ensure that the device is properly heat-sinked and that the PCB layout is designed to minimize thermal resistance.
The EN pin is an active-high enable input that allows the user to turn the regulator on or off. When the EN pin is high, the regulator is enabled, and when it is low, the regulator is disabled. This pin can be used to implement power sequencing or to turn off the regulator during shutdown or standby modes.
The output voltage of the MAX738AEWE+ can be calculated using the following formula: VOUT = (R1 / R2) * 1.25V, where R1 and R2 are the resistors connected to the FB (feedback) pin. The output voltage range is adjustable from 1.25V to 5.5V.
The maximum output current of the MAX738AEWE+ is 150mA. However, the actual output current may be limited by the input voltage, output voltage, and thermal considerations.
MAX738AEWE+ datasheet
by Maxim Integrated Products
