LT3990 - IC 0.865 A SWITCHING REGULATOR, 2760 kHz SWITCHING FREQ-MAX, PDSO10, 3 X 3 MM, LEAD FREE, PLASTIC, MO-229WEED-2, DFN-10, Switching Regulator or Controller
The LT3990 can handle input voltages up to 60V, but it's recommended to keep it below 50V for optimal performance and reliability.
To minimize noise and EMI, keep the input and output capacitors close to the IC, use a solid ground plane, and keep the high-current paths short and wide. Also, avoid routing sensitive signals near the inductor.
The recommended inductor value is between 1.5uH to 3.3uH, and a shielded inductor with a low DCR (e.g., 0.5 ohms or less) is recommended for optimal performance.
The output voltage can be adjusted by changing the resistor divider ratio between the FB pin and the output voltage. A higher resistor value will increase the output voltage, while a lower value will decrease it.
The LT3990 can deliver up to 2A of output current, but it's recommended to keep it below 1.5A for optimal performance and reliability.
LT3990EDD#TRPBF datasheet
by Linear Technology
