A recommended PCB layout for optimal thermal performance would be to use a 2-layer or 4-layer board with a solid ground plane, and to place thermal vias under the IC to dissipate heat effectively. Additionally, keeping the IC away from other heat sources and using a heat sink can improve thermal performance.
To ensure stable operation with a single power supply, it's essential to decouple the power supply lines with capacitors (e.g., 10uF and 100nF) and to use a low-ESR capacitor (e.g., 10uF) at the output of the regulator. Additionally, ensure that the power supply voltage is within the recommended range (7V to 18V) and that the input voltage is well-regulated.
The maximum allowed voltage on the enable pin (EN) is 6V. Exceeding this voltage may damage the IC. It's recommended to use a voltage divider or a level shifter if the control signal is from a higher voltage source.
The output voltage adjustment pins (VOUT1 and VOUT2) should be connected to a resistive divider network to set the desired output voltage. The resistors should be chosen to ensure that the voltage at the VOUT1 and VOUT2 pins is within the recommended range (0.8V to 5.5V).
The recommended input capacitor value is 10uF to 22uF, and it should be a low-ESR type (e.g., X5R or X7R) to minimize voltage ripple and ensure stable operation.
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