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LTC4251BIS6-1#TRMPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
19
4251b12f
LTC4251B/LTC4251B-1/
LTC4251B-2
APPLICATIONS INFORMATION
Figure 10. Undervoltage Timing with an Overvoltage Glitch (All Waveforms are Referenced to V
EE
)
Figure 11. Overvoltage Timing (All Waveforms are Referenced to V
EE
)
132456789
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
1324567
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
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
21
4251b12f
LTC4251B/LTC4251B-1/
LTC4251B-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 Waveforms are Referenced to V
EE
)
APPLICATIONS INFORMATION
TIMER
GATE
SENSE
V
OUT
V
ACL
V
TMRH
V
CB
58μA
5.8μA
5.8μA
1432
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
156432
230μA
58μA
58μA
RESET LATCHED TIMER FAULT BY EXTERNAL LOW PULSE.
4251b12 F14
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24

LTC4251BIS6-1#TRMPBF

Mfr. #:
Buy LTC4251BIS6-1#TRMPBF
Manufacturer:
Analog Devices Inc.
Description:
Hot Swap Voltage Controllers Improved Negative 48V Hot Swap in SOT-23
Lifecycle:
New from this manufacturer.
Delivery:
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