A good PCB layout for the MAX1744AUB+ 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 stability, it's 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 kept as short as possible.
The MAX1744AUB+ can handle a maximum input voltage of 28V. However, it's recommended to operate the device within the specified input voltage range of 4.5V to 24V for optimal performance and reliability.
The output voltage of the MAX1744AUB+ can be calculated using the formula: VOUT = VREF x (1 + R1/R2), where VREF is the internal reference voltage (1.25V), and R1 and R2 are the feedback resistors.
The EN (enable) pin is used to enable or disable the output of the MAX1744AUB+. When the EN pin is pulled low, the output is disabled, and the device enters a low-power shutdown mode. When the EN pin is pulled high, the output is enabled, and the device operates normally.
MAX1744AUB+ datasheet
by Maxim Integrated Products
