A good PCB layout for the SG2524DR involves keeping the input and output traces short and away from each other, using a solid ground plane, and placing decoupling capacitors close to the device. Additionally, it's recommended to use a shielded inductor and to keep the switching node (SW) away from sensitive analog nodes.
When choosing an inductor for the SG2524DR, consider the inductor's saturation current, DC resistance, and core material. A good starting point is to choose an inductor with a saturation current rating of at least 1.5 times the maximum output current, and a DC resistance of less than 100 mΩ. Ferrite or iron powder cores are good options.
The SG2524DR is rated for operation up to 85°C ambient temperature, but it's recommended to derate the device's power dissipation at higher temperatures to ensure reliable operation.
The SG2524DR can be synchronized with an external clock signal applied to the SYNC pin. The external clock frequency should be within the range of 100 kHz to 500 kHz, and the clock signal should have a duty cycle of 50% ± 10%.
The EN (Enable) pin is used to enable or disable the SG2524DR. When the EN pin is pulled low, the device is disabled and all internal circuits are shut down, reducing power consumption to near zero.
SG2524DR datasheet
by Texas Instruments
