SNVS715B March 2011 – June 2019 LM21212-2
PRODUCTION DATA.
The first step in designing the LM21212-2 application is setting the output voltage. This is done by using a voltage divider between VOUT and AGND, with the middle node connected to VFB. When operating under steady-state conditions, the LM21212-2 will force VOUT such that VFB is driven to 0.6 V.
A good starting point for the lower feedback resistor, RFB2, is 10kΩ. RFB1 can then be calculated the following equation: