A good PCB layout for the MAX8880EUT+T involves keeping the input and output capacitors close to the IC, using a solid ground plane, and minimizing the length of the traces connecting the IC to the capacitors and resistors. A 4-layer PCB with a dedicated power plane and a solid ground plane is recommended.
To ensure the stability of the output voltage, it is essential to choose the correct output capacitor value and type. A minimum capacitance of 10uF with an ESR of 1ohm or less is recommended. Additionally, the output capacitor should be placed close to the IC, and the feedback resistors should be chosen to ensure a stable output voltage.
The MAX8880EUT+T can handle a maximum input voltage of 5.5V. Exceeding this voltage may damage the IC. It is essential to ensure that the input voltage is within the recommended range to ensure the reliability and performance of the IC.
The output voltage of the MAX8880EUT+T can be calculated using the following formula: VOUT = VREF x (1 + R1/R2), where VREF is the internal reference voltage (1.25V), R1 is the feedback resistor connected between the output and the feedback pin, and R2 is the feedback resistor connected between the feedback pin and ground.
The quiescent current of the MAX8880EUT+T is typically around 20uA. This current is consumed by the IC even when the output is not loaded. The quiescent current affects the overall power consumption, especially in low-power applications. To minimize power consumption, it is essential to choose the correct output capacitor value and type, and to optimize the PCB layout.
MAX8880EUT+T datasheet
by Maxim Integrated Products
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