JAJSOG6 October 2022 TPS568231
PRODUCTION DATA
The EN pin controls the turn-on and turn-off of the device. When EN pin voltage is above the turn-on threshold, which is approximately 1.2 V, the device starts switching and when the EN pin voltage falls below the turn-off threshold, which is approximately 1.1 V, it stops switching. If the user application requires a different turn-on (VSTART) and turn-off thresholds (VSTOP), respectively, the EN pin can be configured as shown in Figure 7-2 by connecting a resistor divider between VIN and EN. The EN pin has a pullup current, Ip1, that sets the default state of the pin when it is floating. This current increases to Ip2 when the EN pin voltage crosses the turn-on threshold. Use Equation 4 and Equation 5 to set the UVLO thresholds.
where