DLPS031C December 2013 – August 2015 DLPC6401
PRODUCTION DATA.
It is difficult to set up a power monitor to trip exactly on the ASIC minimum supply voltage specification. Thus for practical reasons, TI recommends that the external power monitor generating POSENSE target its threshold to 90% of the minimum supply voltage specifications and ensure that POSENSE remain low a sufficient amount of time for all supply voltages to reach minimum ASIC requirements and stabilize. Note that the trip voltage for detecting the loss of power is not critical for POSENSE and thus may be as low as 50% of rated supply voltages. In addition, the reaction time to respond to a low voltage condition is not critical for POSENSE; however, PWRGOOD does have much more critical requirements in these areas.