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LTC4251BIS6#TRMPBF
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
19
4251b12f
L
TC4251B/L
TC4251B-1/
L
TC4251B-2
APPLICATIONS INFORMATION
Figure 10. Under
voltage Timing with an Over
voltage Glitch (All Waveforms are Referenced to V
EE
)
Figure 11. Over
voltage Timing (All W
aveforms are Referenced to V
EE
)
13
24
5
6
7
8
9
V
UV/0V
DROPS BELOW V
OVLO
AND TIMER RESTARTS INITIAL TIMING CYCLE.
V
UV/0V
CLEARS V
UVHI
. CHECK TIMER < V
TMRL
, GATE < V
GATEL
AND SENSE < V
CB
.
V
UV/0V
OVERSHOOTS V
OVHI
AND TIMER ABORTS INITIAL TIMING CYCLE.
TIMER CLEARS V
TMRL
, CHECK GATE < V
GATEL
AND SENSE < V
CB
.
V
OVHI
V
UVHI
V
OVLO
V
TMRH
V
TMRL
V
ACL
V
CB
5.8μA
230μA
58μA
58μA
5.8μA
5.8μA
INITIAL TIMING CYCLE
START-UP CYCLE
4251b12 F10
UV/0V
TIMER
GATE
SENSE
10
13
24
5
6
7
UV/0V
TIMER
GATE
SENSE
V
OVHI
V
TMRH
V
OVLO
V
ACL
V
CB
5.8μA
5.8μA
5.8μA
5.8μA
4251b12 F11
230μA
58μA
58μA
V
UV/0V
DROPS BELOW V
OVLO
AND GATE RESTARTS.
V
UV/0V
OVERSHOOTS V
OVHI
AND GATE PULLS TO V
EE
. TIMER UNAFFECTED.
20
4251b12f
L
TC4251B/L
TC4251B-1/
L
TC4251B-2
APPLICATIONS INFORMATION
(12a) Momentary Circuit-Breaker Fault
(12b) Circuit-Breaker Time-Out
Figure 12. Timer Behavior (All W
aveforms 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
14
3
2
TIMER LATCHES OFF
4251b12 F12c
21
4251b12f
L
TC4251B/L
TC4251B-1/
L
TC4251B-2
Figure 13. Current Limit Behavior (All Waveforms are Referenced to V
EE
)
(13a) Analog Current Limit Fault
(13b) Fast Current Limit Fault
Figure 14. Latched Fault Reset Timing (All W
aveforms are Referenced to V
EE
)
APPLICATIONS INFORMATION
TIMER
GATE
SENSE
V
OUT
V
ACL
V
TMRH
V
CB
58μA
5.8μA
5.8μA
14
3
2
230μA
4251b12 F13a
TIMER
GATE
SENSE
V
OUT
V
FCL
V
ACL
V
TMRH
V
CB
5.8μA
230μA
12
TIMER LATCHES OFF
4251b12 F13b
TIMER
GATE
SENSE
V
ACL
V
TMRH
V
TMRL
V
CB
5.8μA
5.8μA
5.8μA
15
6
4
3
2
230μA
58μA
58μA
RESET LATCHED TIMER FAULT BY EXTERNAL LOW PULSE.
4251b12 F14
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
LTC4251BIS6#TRMPBF
Mfr. #:
Buy LTC4251BIS6#TRMPBF
Manufacturer:
Analog Devices Inc.
Description:
Hot Swap Voltage Controllers Improved Negative 48V Hot Swap in SOT-23
Lifecycle:
New from this manufacturer.
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