JP2 is used to set different MODE/S-CONF configurations. MODE/S-CONF can be connected to VIN and GND as a traditional HIGH or LOW level. R6 and R7 select the other device configurations including the following:

• Internal/external feedback
• Switching frequency
• Output discharge
• Auto PFM/PWM or forced PWM options

The values of R6 and R7 can be changed per the user’s requirement.

• While using the internal feedback (VSET) configuration for the output voltage setting, either float the FB pin by cutting the net tie (NT1) included on the back of the board or remove both R1 and R2 for 3.3-V output voltage. Other output voltage can be programmed by removing R1 and changing the value of R2. Ensure the JP2 jumper is placed correctly for proper operation with internal feedback.
  WARNING: Do not set the MODE pin for external feedback if either the net tie (NT1) is cut or R1 and R2 are removed. This can cause damage to the device due to lack of external feedback control.
• Dynamic mode option is an advanced feature that allows the MODE pin to actively switch between forced PWM and auto PFM/PWM during operation, but this is only possible by driving the mode pin between VIN and GND. This feature provides the user with the option of controlling if and when the device enters power save mode (DCM).