Datasheet

20
4251b12f
LTC4251B/LTC4251B-1/
LTC4251B-2
APPLICATIONS INFORMATION
(12a) Momentary Circuit-Breaker Fault (12b) Circuit-Breaker Time-Out
Figure 12. Timer Behavior (All Waveforms are Referenced to V
EE
)
(12c) Multiple Circuit-Breaker Faults
TIMER
GATE
SENSE
V
OUT
V
ACL
V
TMRL
V
CB
5.8μA
5.8μA
CB FAULT
230μA
12
4251b12 F12a
TIMER
GATE
SENSE
V
OUT
V
ACL
V
TMRH
V
CB
5.8μA
CB FAULT
230μA
12
TIMER LATCHES OFF
4251b12 F12b
TIMER
GATE
SENSE
V
OUT
V
ACL
V
TMRH
V
CB
5.8μA
5.8μA
230μA
230μA
1432
TIMER LATCHES OFF
4251b12 F12c