The recommended layout and placement for the MAX6621AUB+ involves keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing the length of the traces to reduce noise and EMI.
To ensure stability, make sure to follow the recommended component values and layout guidelines, and add a 10nF capacitor between the VCC and GND pins to filter out high-frequency noise.
The MAX6621AUB+ can handle input voltages up to 5.5V, but it's recommended to operate within the specified input voltage range of 2.7V to 5.5V for optimal performance and reliability.
The output voltage of the MAX6621AUB+ can be adjusted by changing the ratio of the resistors R1 and R2 connected to the FB pin, according to the formula: VOUT = 1.25V x (R1 + R2) / R2.
The MAX6621AUB+ can deliver up to 150mA of output current, but it's recommended to operate within the specified output current range of 10mA to 100mA for optimal performance and reliability.