Soft-start and disable

L6727

12/34

Doc ID 12933 Rev 4

6.2

Enable / disable

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

disable condition HS and LS MOSFETs are turned off, and a 20

μA current is sourced from

COMP / DIS pin. Setting free 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

μs. Once disabled, COMP output current drops to 20μA.

Figure 5.