Application information

L5150CJ, L5150CS

18/34

DS6184 Rev 18

3.3

Early warning

This circuit compares the EWi input signal with the internal voltage reference (typically

2.5 V). The use of an external voltage divider makes the comparator very flexible in the

application. This function can be used to supervise the supply input voltage either before or

after the protection diode and to give additional information to the microprocessor such as

low voltage warnings.

Figure 25. Early warning time diagram

t

EWi

t

EWo

Ewi_th_high

Ewi_th_low

HIGH

LOW

GAPGCFT00055