Analog Devices Linear ADI Power SCP-LT8618-BEVALZ Demo Manual page 4

DEMO MANUAL SCP-LT8618-BEVALZ
FREQUENCY PIN CONFIGURATION
The LT8618 allows the user to program an operating fre-
quency by a single resistor. The default operating fre-
quency is 2.0MHz. Note that changing the switching fre-
quency may affect other parameters and likely necessi-
tates a change in inductor and compensation component
values. Contact the SCP team for applications support if
shifting the switching frequency greater than ±10%.
Table 4. Resistor Selection Guide for Switching Frequency Setting
f R (Ω)
SW 2
200kHz 221k
300kHz 143k
400kHz 110k
500kHz 86.6k
600kHz 71.5k
700kHz 60.4k
800kHz 52.3k
900kHz 46.4k
1.00MHz 40.2k
1.10MHz 36.5k
1.20MHz 33.2k
4
f R (Ω)
SW 2
1.30MHz 30.1k
1.40MHz 27.4k
1.50MHz 25.5k
1.60MHz 23.7k
1.70MHz 22.1k
1.80MHz 20.5k
1.90MHz 19.1k
2.00MHz 18.2k
2.10MHz 16.9k
2.20MHz 16.2k
Rev. 0