The recommended layout and placement for the MAX1471ATJ+ involves keeping the input and output traces as short as possible, using a solid ground plane, and placing the device close to the power supply. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane to minimize noise and EMI.
To ensure the MAX1471ATJ+ is properly powered and biased, make sure to connect the VCC pin to a stable 3.3V or 5V power supply, and the GND pin to a solid ground plane. Also, ensure that the input voltage (VIN) is within the recommended range of 2.7V to 5.5V, and that the output voltage (VOUT) is properly decoupled with a 10uF capacitor.
The maximum output current capability of the MAX1471ATJ+ is 150mA. However, it's recommended to limit the output current to 100mA or less to ensure reliable operation and to prevent overheating.
To configure the MAX1471ATJ+ for a specific output voltage, you need to connect the FB (feedback) pin to a resistive divider network that sets the desired output voltage. The resistive divider network should be connected between the output voltage (VOUT) and ground, with the FB pin connected to the center tap of the divider.
The EN (enable) pin on the MAX1471ATJ+ is used to enable or disable the device. When the EN pin is pulled high (above 1.4V), the device is enabled and operates normally. When the EN pin is pulled low (below 0.4V), the device is disabled and enters a low-power shutdown mode.
MAX1471ATJ+ datasheet
by Maxim Integrated Products
