DocID025003 Rev 1

13/29

A6727

Soft-start and disable

6.2

Enable / disable

The device can be disabled externally by pushing COMP/DIS pin under 0.5 V (typ.). In

disable condition HS and LS MOSFETs are turned off, and a 20 mA current sources from

COMP/DIS pin. Setting the pin, this current pulls it over the threshold and the device

enables again performing a new SS.

To disable the device, the external pull-down needs to overcome 10 mA of COMP output

current for about 15 ms. Once disabled, COMP output current drops below 20 mA.

Figure 7. Overcurrent hiccup

AM16770v1

AM16771v1