SNVS715B March 2011 – June 2019 LM21212-2
PRODUCTION DATA.
The frequency adjust (FADJ) pin allows the LM21212-2 to be programmed to a predetermined switching frequency between 300 kHz to 1.55 MHz by connecting a resistor between FADJ and AGND. To determine the resistor (RADJ) value for a desired frequency, the following equation can be used:
where
The desired frequency must fall within the operational frequency range, 300 kHz to 1550 kHz, and a corresponding resistor must be used for normal operation.